regen cassette

* Added a new utility function to remove OpenAI-specific fields from schemas, ensuring compatibility with Gemini and Bedrock APIs.
* Updated BedrockCompletion and GeminiCompletion classes to utilize this function for cleaning parameters before API calls.
* Introduced tests to validate the functionality of the new utility, ensuring it correctly strips incompatible fields while preserving required properties.

.env.test

@@ -21,7 +21,6 @@ OPENROUTER_API_KEY=fake-openrouter-key
 AWS_ACCESS_KEY_ID=fake-aws-access-key
 AWS_SECRET_ACCESS_KEY=fake-aws-secret-key
 AWS_DEFAULT_REGION=us-east-1
-AWS_REGION_NAME=us-east-1
 
 # -----------------------------------------------------------------------------
 # Azure OpenAI Configuration

.github/workflows/publish.yml

@@ -1,8 +1,6 @@
 name: Publish to PyPI
 
 on:
-  repository_dispatch:
-    types: [deployment-tests-passed]
   workflow_dispatch:
     inputs:
       release_tag:
@@ -20,11 +18,8 @@ jobs:
       - name: Determine release tag
         id: release
         run: |
-          # Priority: workflow_dispatch input > repository_dispatch payload > default branch
           if [ -n "${{ inputs.release_tag }}" ]; then
             echo "tag=${{ inputs.release_tag }}" >> $GITHUB_OUTPUT
-          elif [ -n "${{ github.event.client_payload.release_tag }}" ]; then
-            echo "tag=${{ github.event.client_payload.release_tag }}" >> $GITHUB_OUTPUT
           else
             echo "tag=" >> $GITHUB_OUTPUT
           fi

.github/workflows/trigger-deployment-tests.yml

@@ -1,18 +0,0 @@
-name: Trigger Deployment Tests
-
-on:
-  release:
-    types: [published]
-
-jobs:
-  trigger:
-    name: Trigger deployment tests
-    runs-on: ubuntu-latest
-    steps:
-      - name: Trigger deployment tests
-        uses: peter-evans/repository-dispatch@v3
-        with:
-          token: ${{ secrets.CREWAI_DEPLOYMENTS_PAT }}
-          repository: ${{ secrets.CREWAI_DEPLOYMENTS_REPOSITORY }}
-          event-type: crewai-release
-          client-payload: '{"release_tag": "${{ github.event.release.tag_name }}", "release_name": "${{ github.event.release.name }}"}'

docs/en/concepts/llms.mdx

@@ -470,7 +470,7 @@ In this section, you'll find detailed examples that help you select, configure,
       To get an Express mode API key:
       - New Google Cloud users: Get an [express mode API key](https://cloud.google.com/vertex-ai/generative-ai/docs/start/quickstart?usertype=apikey)
       - Existing Google Cloud users: Get a [Google Cloud API key bound to a service account](https://cloud.google.com/docs/authentication/api-keys)
-      
+
       For more details, see the [Vertex AI Express mode documentation](https://docs.cloud.google.com/vertex-ai/generative-ai/docs/start/quickstart?usertype=apikey).
     </Info>
 
@@ -652,6 +652,7 @@ In this section, you'll find detailed examples that help you select, configure,
     # Optional
     AWS_SESSION_TOKEN=<your-session-token>  # For temporary credentials
     AWS_DEFAULT_REGION=<your-region>  # Defaults to us-east-1
+    AWS_REGION_NAME=<your-region>  # Alternative configuration for backwards compatibility with LiteLLM. Defaults to us-east-1
     ```
 
     **Basic Usage:**
@@ -695,6 +696,7 @@ In this section, you'll find detailed examples that help you select, configure,
     - `AWS_SECRET_ACCESS_KEY`: AWS secret key (required)
     - `AWS_SESSION_TOKEN`: AWS session token for temporary credentials (optional)
     - `AWS_DEFAULT_REGION`: AWS region (defaults to `us-east-1`)
+    - `AWS_REGION_NAME`: AWS region (defaults to `us-east-1`). Alternative configuration for backwards compatibility with LiteLLM
 
     **Features:**
     - Native tool calling support via Converse API

docs/en/enterprise/features/flow-hitl-management.mdx

@@ -38,22 +38,21 @@ CrewAI Enterprise provides a comprehensive Human-in-the-Loop (HITL) management s
 Configure human review checkpoints within your Flows using the `@human_feedback` decorator. When execution reaches a review point, the system pauses, notifies the assignee via email, and waits for a response.
 
 ```python
-from crewai.flow.flow import Flow, start, listen
+from crewai.flow.flow import Flow, start, listen, or_
 from crewai.flow.human_feedback import human_feedback, HumanFeedbackResult
 
 class ContentApprovalFlow(Flow):
     @start()
     def generate_content(self):
-        # AI generates content
         return "Generated marketing copy for Q1 campaign..."
 
-    @listen(generate_content)
     @human_feedback(
         message="Please review this content for brand compliance:",
         emit=["approved", "rejected", "needs_revision"],
     )
-    def review_content(self, content):
-        return content
+    @listen(or_("generate_content", "needs_revision"))
+    def review_content(self):
+        return "Marketing copy for review..."
 
     @listen("approved")
     def publish_content(self, result: HumanFeedbackResult):
@@ -62,10 +61,6 @@ class ContentApprovalFlow(Flow):
     @listen("rejected")
     def archive_content(self, result: HumanFeedbackResult):
         print(f"Content rejected. Reason: {result.feedback}")
-
-    @listen("needs_revision")
-    def revise_content(self, result: HumanFeedbackResult):
-        print(f"Revision requested: {result.feedback}")
 ```
 
 For complete implementation details, see the [Human Feedback in Flows](/en/learn/human-feedback-in-flows) guide.

docs/en/enterprise/guides/deploy-to-amp.mdx

@@ -177,6 +177,11 @@ You need to push your crew to a GitHub repository. If you haven't created a crew
       ![Set Environment Variables](/images/enterprise/set-env-variables.png)
     </Frame>
 
+    <Info>
+      Using private Python packages? You'll need to add your registry credentials here too.
+      See [Private Package Registries](/en/enterprise/guides/private-package-registry) for the required variables.
+    </Info>
+
   </Step>
 
   <Step title="Deploy Your Crew">

docs/en/enterprise/guides/prepare-for-deployment.mdx

@@ -256,6 +256,12 @@ Before deployment, ensure you have:
 1. **LLM API keys** ready (OpenAI, Anthropic, Google, etc.)
 2. **Tool API keys** if using external tools (Serper, etc.)
 
+<Info>
+  If your project depends on packages from a **private PyPI registry**, you'll also need to configure
+  registry authentication credentials as environment variables. See the
+  [Private Package Registries](/en/enterprise/guides/private-package-registry) guide for details.
+</Info>
+
 <Tip>
   Test your project locally with the same environment variables before deploying
   to catch configuration issues early.

docs/en/enterprise/guides/private-package-registry.mdx

@@ -0,0 +1,263 @@
+---
+title: "Private Package Registries"
+description: "Install private Python packages from authenticated PyPI registries in CrewAI AMP"
+icon: "lock"
+mode: "wide"
+---
+
+<Note>
+  This guide covers how to configure your CrewAI project to install Python packages
+  from private PyPI registries (Azure DevOps Artifacts, GitHub Packages, GitLab, AWS CodeArtifact, etc.)
+  when deploying to CrewAI AMP.
+</Note>
+
+## When You Need This
+
+If your project depends on internal or proprietary Python packages hosted on a private registry
+rather than the public PyPI, you'll need to:
+
+1. Tell UV **where** to find the package (an index URL)
+2. Tell UV **which** packages come from that index (a source mapping)
+3. Provide **credentials** so UV can authenticate during install
+
+CrewAI AMP uses [UV](https://docs.astral.sh/uv/) for dependency resolution and installation.
+UV supports authenticated private registries through `pyproject.toml` configuration combined
+with environment variables for credentials.
+
+## Step 1: Configure pyproject.toml
+
+Three pieces work together in your `pyproject.toml`:
+
+### 1a. Declare the dependency
+
+Add the private package to your `[project.dependencies]` like any other dependency:
+
+```toml
+[project]
+dependencies = [
+    "crewai[tools]>=0.100.1,<1.0.0",
+    "my-private-package>=1.2.0",
+]
+```
+
+### 1b. Define the index
+
+Register your private registry as a named index under `[[tool.uv.index]]`:
+
+```toml
+[[tool.uv.index]]
+name = "my-private-registry"
+url = "https://pkgs.dev.azure.com/my-org/_packaging/my-feed/pypi/simple/"
+explicit = true
+```
+
+<Info>
+  The `name` field is important — UV uses it to construct the environment variable names
+  for authentication (see [Step 2](#step-2-set-authentication-credentials) below).
+
+  Setting `explicit = true` means UV won't search this index for every package — only the
+  ones you explicitly map to it in `[tool.uv.sources]`. This avoids unnecessary queries
+  against your private registry and protects against dependency confusion attacks.
+</Info>
+
+### 1c. Map the package to the index
+
+Tell UV which packages should be resolved from your private index using `[tool.uv.sources]`:
+
+```toml
+[tool.uv.sources]
+my-private-package = { index = "my-private-registry" }
+```
+
+### Complete example
+
+```toml
+[project]
+name = "my-crew-project"
+version = "0.1.0"
+requires-python = ">=3.10,<=3.13"
+dependencies = [
+    "crewai[tools]>=0.100.1,<1.0.0",
+    "my-private-package>=1.2.0",
+]
+
+[tool.crewai]
+type = "crew"
+
+[[tool.uv.index]]
+name = "my-private-registry"
+url = "https://pkgs.dev.azure.com/my-org/_packaging/my-feed/pypi/simple/"
+explicit = true
+
+[tool.uv.sources]
+my-private-package = { index = "my-private-registry" }
+```
+
+After updating `pyproject.toml`, regenerate your lock file:
+
+```bash
+uv lock
+```
+
+<Warning>
+  Always commit the updated `uv.lock` along with your `pyproject.toml` changes.
+  The lock file is required for deployment — see [Prepare for Deployment](/en/enterprise/guides/prepare-for-deployment).
+</Warning>
+
+## Step 2: Set Authentication Credentials
+
+UV authenticates against private indexes using environment variables that follow a naming convention
+based on the index name you defined in `pyproject.toml`:
+
+```
+UV_INDEX_{UPPER_NAME}_USERNAME
+UV_INDEX_{UPPER_NAME}_PASSWORD
+```
+
+Where `{UPPER_NAME}` is your index name converted to **uppercase** with **hyphens replaced by underscores**.
+
+For example, an index named `my-private-registry` uses:
+
+| Variable | Value |
+|----------|-------|
+| `UV_INDEX_MY_PRIVATE_REGISTRY_USERNAME` | Your registry username or token name |
+| `UV_INDEX_MY_PRIVATE_REGISTRY_PASSWORD` | Your registry password or token/PAT |
+
+<Warning>
+  These environment variables **must** be added via the CrewAI AMP **Environment Variables** settings —
+  either globally or at the deployment level. They cannot be set in `.env` files or hardcoded in your project.
+
+  See [Setting Environment Variables in AMP](#setting-environment-variables-in-amp) below.
+</Warning>
+
+## Registry Provider Reference
+
+The table below shows the index URL format and credential values for common registry providers.
+Replace placeholder values with your actual organization and feed details.
+
+| Provider | Index URL | Username | Password |
+|----------|-----------|----------|----------|
+| **Azure DevOps Artifacts** | `https://pkgs.dev.azure.com/{org}/_packaging/{feed}/pypi/simple/` | Any non-empty string (e.g. `token`) | Personal Access Token (PAT) with Packaging Read scope |
+| **GitHub Packages** | `https://pypi.pkg.github.com/{owner}/simple/` | GitHub username | Personal Access Token (classic) with `read:packages` scope |
+| **GitLab Package Registry** | `https://gitlab.com/api/v4/projects/{project_id}/packages/pypi/simple/` | `__token__` | Project or Personal Access Token with `read_api` scope |
+| **AWS CodeArtifact** | Use the URL from `aws codeartifact get-repository-endpoint` | `aws` | Token from `aws codeartifact get-authorization-token` |
+| **Google Artifact Registry** | `https://{region}-python.pkg.dev/{project}/{repo}/simple/` | `_json_key_base64` | Base64-encoded service account key |
+| **JFrog Artifactory** | `https://{instance}.jfrog.io/artifactory/api/pypi/{repo}/simple/` | Username or email | API key or identity token |
+| **Self-hosted (devpi, Nexus, etc.)** | Your registry's simple API URL | Registry username | Registry password |
+
+<Tip>
+  For **AWS CodeArtifact**, the authorization token expires periodically.
+  You'll need to refresh the `UV_INDEX_*_PASSWORD` value when it expires.
+  Consider automating this in your CI/CD pipeline.
+</Tip>
+
+## Setting Environment Variables in AMP
+
+Private registry credentials must be configured as environment variables in CrewAI AMP.
+You have two options:
+
+<Tabs>
+  <Tab title="Web Interface">
+    1. Log in to [CrewAI AMP](https://app.crewai.com)
+    2. Navigate to your automation
+    3. Open the **Environment Variables** tab
+    4. Add each variable (`UV_INDEX_*_USERNAME` and `UV_INDEX_*_PASSWORD`) with its value
+
+    See the [Deploy to AMP — Set Environment Variables](/en/enterprise/guides/deploy-to-amp#set-environment-variables) step for details.
+  </Tab>
+  <Tab title="CLI Deployment">
+    Add the variables to your local `.env` file before running `crewai deploy create`.
+    The CLI will securely transfer them to the platform:
+
+    ```bash
+    # .env
+    OPENAI_API_KEY=sk-...
+    UV_INDEX_MY_PRIVATE_REGISTRY_USERNAME=token
+    UV_INDEX_MY_PRIVATE_REGISTRY_PASSWORD=your-pat-here
+    ```
+
+    ```bash
+    crewai deploy create
+    ```
+  </Tab>
+</Tabs>
+
+<Warning>
+  **Never** commit credentials to your repository. Use AMP environment variables for all secrets.
+  The `.env` file should be listed in `.gitignore`.
+</Warning>
+
+To update credentials on an existing deployment, see [Update Your Crew — Environment Variables](/en/enterprise/guides/update-crew).
+
+## How It All Fits Together
+
+When CrewAI AMP builds your automation, the resolution flow works like this:
+
+<Steps>
+  <Step title="Build starts">
+    AMP pulls your repository and reads `pyproject.toml` and `uv.lock`.
+  </Step>
+  <Step title="UV resolves dependencies">
+    UV reads `[tool.uv.sources]` to determine which index each package should come from.
+  </Step>
+  <Step title="UV authenticates">
+    For each private index, UV looks up `UV_INDEX_{NAME}_USERNAME` and `UV_INDEX_{NAME}_PASSWORD`
+    from the environment variables you configured in AMP.
+  </Step>
+  <Step title="Packages install">
+    UV downloads and installs all packages — both public (from PyPI) and private (from your registry).
+  </Step>
+  <Step title="Automation runs">
+    Your crew or flow starts with all dependencies available.
+  </Step>
+</Steps>
+
+## Troubleshooting
+
+### Authentication Errors During Build
+
+**Symptom**: Build fails with `401 Unauthorized` or `403 Forbidden` when resolving a private package.
+
+**Check**:
+- The `UV_INDEX_*` environment variable names match your index name exactly (uppercased, hyphens → underscores)
+- Credentials are set in AMP environment variables, not just in a local `.env`
+- Your token/PAT has the required read permissions for the package feed
+- The token hasn't expired (especially relevant for AWS CodeArtifact)
+
+### Package Not Found
+
+**Symptom**: `No matching distribution found for my-private-package`.
+
+**Check**:
+- The index URL in `pyproject.toml` ends with `/simple/`
+- The `[tool.uv.sources]` entry maps the correct package name to the correct index name
+- The package is actually published to your private registry
+- Run `uv lock` locally with the same credentials to verify resolution works
+
+### Lock File Conflicts
+
+**Symptom**: `uv lock` fails or produces unexpected results after adding a private index.
+
+**Solution**: Set the credentials locally and regenerate:
+
+```bash
+export UV_INDEX_MY_PRIVATE_REGISTRY_USERNAME=token
+export UV_INDEX_MY_PRIVATE_REGISTRY_PASSWORD=your-pat
+uv lock
+```
+
+Then commit the updated `uv.lock`.
+
+## Related Guides
+
+<CardGroup cols={3}>
+  <Card title="Prepare for Deployment" icon="clipboard-check" href="/en/enterprise/guides/prepare-for-deployment">
+    Verify project structure and dependencies before deploying.
+  </Card>
+  <Card title="Deploy to AMP" icon="rocket" href="/en/enterprise/guides/deploy-to-amp">
+    Deploy your crew or flow and configure environment variables.
+  </Card>
+  <Card title="Update Your Crew" icon="arrows-rotate" href="/en/enterprise/guides/update-crew">
+    Update environment variables and push changes to a running deployment.
+  </Card>
+</CardGroup>

docs/en/learn/human-feedback-in-flows.mdx

@@ -98,33 +98,43 @@ def handle_feedback(self, result):
 When you specify `emit`, the decorator becomes a router. The human's free-form feedback is interpreted by an LLM and collapsed into one of the specified outcomes:
 
 ```python Code
-@start()
-@human_feedback(
-    message="Do you approve this content for publication?",
-    emit=["approved", "rejected", "needs_revision"],
-    llm="gpt-4o-mini",
-    default_outcome="needs_revision",
-)
-def review_content(self):
-    return "Draft blog post content here..."
+from crewai.flow.flow import Flow, start, listen, or_
+from crewai.flow.human_feedback import human_feedback
 
-@listen("approved")
-def publish(self, result):
-    print(f"Publishing! User said: {result.feedback}")
+class ReviewFlow(Flow):
+    @start()
+    def generate_content(self):
+        return "Draft blog post content here..."
 
-@listen("rejected")
-def discard(self, result):
-    print(f"Discarding. Reason: {result.feedback}")
+    @human_feedback(
+        message="Do you approve this content for publication?",
+        emit=["approved", "rejected", "needs_revision"],
+        llm="gpt-4o-mini",
+        default_outcome="needs_revision",
+    )
+    @listen(or_("generate_content", "needs_revision"))
+    def review_content(self):
+        return "Draft blog post content here..."
 
-@listen("needs_revision")
-def revise(self, result):
-    print(f"Revising based on: {result.feedback}")
+    @listen("approved")
+    def publish(self, result):
+        print(f"Publishing! User said: {result.feedback}")
+
+    @listen("rejected")
+    def discard(self, result):
+        print(f"Discarding. Reason: {result.feedback}")
 ```
 
+When the human says something like "needs more detail", the LLM collapses that to `"needs_revision"`, which triggers `review_content` again via `or_()` — creating a revision loop. The loop continues until the outcome is `"approved"` or `"rejected"`.
+
 <Tip>
 The LLM uses structured outputs (function calling) when available to guarantee the response is one of your specified outcomes. This makes routing reliable and predictable.
 </Tip>
 
+<Warning>
+A `@start()` method only runs once at the beginning of the flow. If you need a revision loop, separate the start method from the review method and use `@listen(or_("trigger", "revision_outcome"))` on the review method to enable the self-loop.
+</Warning>
+
 ## HumanFeedbackResult
 
 The `HumanFeedbackResult` dataclass contains all information about a human feedback interaction:
@@ -188,127 +198,183 @@ Each `HumanFeedbackResult` is appended to `human_feedback_history`, so multiple
 
 ## Complete Example: Content Approval Workflow
 
-Here's a full example implementing a content review and approval workflow:
+Here's a full example implementing a content review and approval workflow with a revision loop:
 
 <CodeGroup>
 
 ```python Code
-from crewai.flow.flow import Flow, start, listen
+from crewai.flow.flow import Flow, start, listen, or_
 from crewai.flow.human_feedback import human_feedback, HumanFeedbackResult
 from pydantic import BaseModel
 
 
 class ContentState(BaseModel):
-    topic: str = ""
     draft: str = ""
-    final_content: str = ""
     revision_count: int = 0
+    status: str = "pending"
 
 
 class ContentApprovalFlow(Flow[ContentState]):
-    """A flow that generates content and gets human approval."""
+    """A flow that generates content and loops until the human approves."""
 
     @start()
-    def get_topic(self):
-        self.state.topic = input("What topic should I write about? ")
-        return self.state.topic
-
-    @listen(get_topic)
-    def generate_draft(self, topic):
-        # In real use, this would call an LLM
-        self.state.draft = f"# {topic}\n\nThis is a draft about {topic}..."
+    def generate_draft(self):
+        self.state.draft = "# AI Safety\n\nThis is a draft about AI Safety..."
         return self.state.draft
 
-    @listen(generate_draft)
     @human_feedback(
-        message="Please review this draft. Reply 'approved', 'rejected', or provide revision feedback:",
+        message="Please review this draft. Approve, reject, or describe what needs changing:",
         emit=["approved", "rejected", "needs_revision"],
         llm="gpt-4o-mini",
         default_outcome="needs_revision",
     )
-    def review_draft(self, draft):
-        return draft
+    @listen(or_("generate_draft", "needs_revision"))
+    def review_draft(self):
+        self.state.revision_count += 1
+        return f"{self.state.draft} (v{self.state.revision_count})"
 
     @listen("approved")
     def publish_content(self, result: HumanFeedbackResult):
-        self.state.final_content = result.output
-        print("\n✅ Content approved and published!")
-        print(f"Reviewer comment: {result.feedback}")
+        self.state.status = "published"
+        print(f"Content approved and published! Reviewer said: {result.feedback}")
         return "published"
 
     @listen("rejected")
     def handle_rejection(self, result: HumanFeedbackResult):
-        print("\n❌ Content rejected")
-        print(f"Reason: {result.feedback}")
+        self.state.status = "rejected"
+        print(f"Content rejected. Reason: {result.feedback}")
         return "rejected"
 
-    @listen("needs_revision")
-    def revise_content(self, result: HumanFeedbackResult):
-        self.state.revision_count += 1
-        print(f"\n📝 Revision #{self.state.revision_count} requested")
-        print(f"Feedback: {result.feedback}")
 
-        # In a real flow, you might loop back to generate_draft
-        # For this example, we just acknowledge
-        return "revision_requested"
-
-
-# Run the flow
 flow = ContentApprovalFlow()
 result = flow.kickoff()
-print(f"\nFlow completed. Revisions requested: {flow.state.revision_count}")
+print(f"\nFlow completed. Status: {flow.state.status}, Reviews: {flow.state.revision_count}")
 ```
 
 ```text Output
-What topic should I write about? AI Safety
+==================================================
+OUTPUT FOR REVIEW:
+==================================================
+# AI Safety
+
+This is a draft about AI Safety... (v1)
+==================================================
+
+Please review this draft. Approve, reject, or describe what needs changing:
+(Press Enter to skip, or type your feedback)
+
+Your feedback: Needs more detail on alignment research
 
 ==================================================
 OUTPUT FOR REVIEW:
 ==================================================
 # AI Safety
 
-This is a draft about AI Safety...
+This is a draft about AI Safety... (v2)
 ==================================================
 
-Please review this draft. Reply 'approved', 'rejected', or provide revision feedback:
+Please review this draft. Approve, reject, or describe what needs changing:
 (Press Enter to skip, or type your feedback)
 
 Your feedback: Looks good, approved!
 
-✅ Content approved and published!
-Reviewer comment: Looks good, approved!
+Content approved and published! Reviewer said: Looks good, approved!
 
-Flow completed. Revisions requested: 0
+Flow completed. Status: published, Reviews: 2
 ```
 
 </CodeGroup>
 
+The key pattern is `@listen(or_("generate_draft", "needs_revision"))` — the review method listens to both the initial trigger and its own revision outcome, creating a self-loop that repeats until the human approves or rejects.
+
 ## Combining with Other Decorators
 
-The `@human_feedback` decorator works with other flow decorators. Place it as the innermost decorator (closest to the function):
+The `@human_feedback` decorator works with `@start()`, `@listen()`, and `or_()`. Both decorator orderings work — the framework propagates attributes in both directions — but the recommended patterns are:
 
 ```python Code
-# Correct: @human_feedback is innermost (closest to the function)
+# One-shot review at the start of a flow (no self-loop)
 @start()
-@human_feedback(message="Review this:")
+@human_feedback(message="Review this:", emit=["approved", "rejected"], llm="gpt-4o-mini")
 def my_start_method(self):
     return "content"
 
+# Linear review on a listener (no self-loop)
 @listen(other_method)
-@human_feedback(message="Review this too:")
+@human_feedback(message="Review this too:", emit=["good", "bad"], llm="gpt-4o-mini")
 def my_listener(self, data):
     return f"processed: {data}"
+
+# Self-loop: review that can loop back for revisions
+@human_feedback(message="Approve or revise?", emit=["approved", "revise"], llm="gpt-4o-mini")
+@listen(or_("upstream_method", "revise"))
+def review_with_loop(self):
+    return "content for review"
 ```
 
-<Tip>
-Place `@human_feedback` as the innermost decorator (last/closest to the function) so it wraps the method directly and can capture the return value before passing to the flow system.
-</Tip>
+### Self-loop pattern
+
+To create a revision loop, the review method must listen to **both** an upstream trigger and its own revision outcome using `or_()`:
+
+```python Code
+@start()
+def generate(self):
+    return "initial draft"
+
+@human_feedback(
+    message="Approve or request changes?",
+    emit=["revise", "approved"],
+    llm="gpt-4o-mini",
+    default_outcome="approved",
+)
+@listen(or_("generate", "revise"))
+def review(self):
+    return "content"
+
+@listen("approved")
+def publish(self):
+    return "published"
+```
+
+When the outcome is `"revise"`, the flow routes back to `review` (because it listens to `"revise"` via `or_()`). When the outcome is `"approved"`, the flow continues to `publish`. This works because the flow engine exempts routers from the "fire once" rule, allowing them to re-execute on each loop iteration.
+
+### Chained routers
+
+A listener triggered by one router's outcome can itself be a router:
+
+```python Code
+@start()
+def generate(self):
+    return "draft content"
+
+@human_feedback(message="First review:", emit=["approved", "rejected"], llm="gpt-4o-mini")
+@listen("generate")
+def first_review(self):
+    return "draft content"
+
+@human_feedback(message="Final review:", emit=["publish", "hold"], llm="gpt-4o-mini")
+@listen("approved")
+def final_review(self, prev):
+    return "final content"
+
+@listen("publish")
+def on_publish(self, prev):
+    return "published"
+
+@listen("hold")
+def on_hold(self, prev):
+    return "held for later"
+```
+
+### Limitations
+
+- **`@start()` methods run once**: A `@start()` method cannot self-loop. If you need a revision cycle, use a separate `@start()` method as the entry point and put the `@human_feedback` on a `@listen()` method.
+- **No `@start()` + `@listen()` on the same method**: This is a Flow framework constraint. A method is either a start point or a listener, not both.
 
 ## Best Practices
 
 ### 1. Write Clear Request Messages
 
-The `request` parameter is what the human sees. Make it actionable:
+The `message` parameter is what the human sees. Make it actionable:
 
 ```python Code
 # ✅ Good - clear and actionable
@@ -516,9 +582,9 @@ class ContentPipeline(Flow):
     @start()
     @human_feedback(
         message="Approve this content for publication?",
-        emit=["approved", "rejected", "needs_revision"],
+        emit=["approved", "rejected"],
         llm="gpt-4o-mini",
-        default_outcome="needs_revision",
+        default_outcome="rejected",
         provider=SlackNotificationProvider("#content-reviews"),
     )
     def generate_content(self):
@@ -534,11 +600,6 @@ class ContentPipeline(Flow):
         print(f"Archived. Reason: {result.feedback}")
         return {"status": "archived"}
 
-    @listen("needs_revision")
-    def queue_revision(self, result):
-        print(f"Queued for revision: {result.feedback}")
-        return {"status": "revision_needed"}
-
 
 # Starting the flow (will pause and wait for Slack response)
 def start_content_pipeline():
@@ -594,22 +655,22 @@ Over time, the human sees progressively better pre-reviewed output because each
 ```python Code
 class ArticleReviewFlow(Flow):
     @start()
+    def generate_article(self):
+        return self.crew.kickoff(inputs={"topic": "AI Safety"}).raw
+
     @human_feedback(
         message="Review this article draft:",
         emit=["approved", "needs_revision"],
         llm="gpt-4o-mini",
         learn=True,  # enable HITL learning
     )
-    def generate_article(self):
-        return self.crew.kickoff(inputs={"topic": "AI Safety"}).raw
+    @listen(or_("generate_article", "needs_revision"))
+    def review_article(self):
+        return self.last_human_feedback.output if self.last_human_feedback else "article draft"
 
     @listen("approved")
     def publish(self):
         print(f"Publishing: {self.last_human_feedback.output}")
-
-    @listen("needs_revision")
-    def revise(self):
-        print("Revising based on feedback...")
 ```
 
 **First run**: The human sees the raw output and says "Always include citations for factual claims." The lesson is distilled and stored in memory.

docs/ko/enterprise/features/flow-hitl-management.mdx

@@ -38,22 +38,21 @@ CrewAI Enterprise는 AI 워크플로우를 협업적인 인간-AI 프로세스
 `@human_feedback` 데코레이터를 사용하여 Flow 내에 인간 검토 체크포인트를 구성합니다. 실행이 검토 포인트에 도달하면 시스템이 일시 중지되고, 담당자에게 이메일로 알리며, 응답을 기다립니다.
 
 ```python
-from crewai.flow.flow import Flow, start, listen
+from crewai.flow.flow import Flow, start, listen, or_
 from crewai.flow.human_feedback import human_feedback, HumanFeedbackResult
 
 class ContentApprovalFlow(Flow):
     @start()
     def generate_content(self):
-        # AI가 콘텐츠 생성
         return "Q1 캠페인용 마케팅 카피 생성..."
 
-    @listen(generate_content)
     @human_feedback(
         message="브랜드 준수를 위해 이 콘텐츠를 검토해 주세요:",
         emit=["approved", "rejected", "needs_revision"],
     )
-    def review_content(self, content):
-        return content
+    @listen(or_("generate_content", "needs_revision"))
+    def review_content(self):
+        return "검토용 마케팅 카피..."
 
     @listen("approved")
     def publish_content(self, result: HumanFeedbackResult):
@@ -62,10 +61,6 @@ class ContentApprovalFlow(Flow):
     @listen("rejected")
     def archive_content(self, result: HumanFeedbackResult):
         print(f"콘텐츠 거부됨. 사유: {result.feedback}")
-
-    @listen("needs_revision")
-    def revise_content(self, result: HumanFeedbackResult):
-        print(f"수정 요청: {result.feedback}")
 ```
 
 완전한 구현 세부 사항은 [Flow에서 인간 피드백](/ko/learn/human-feedback-in-flows) 가이드를 참조하세요.

docs/ko/enterprise/guides/deploy-to-amp.mdx

@@ -176,6 +176,11 @@ Crew를 GitHub 저장소에 푸시해야 합니다. 아직 Crew를 만들지 않
       ![Set Environment Variables](/images/enterprise/set-env-variables.png)
     </Frame>
 
+    <Info>
+      프라이빗 Python 패키지를 사용하시나요? 여기에 레지스트리 자격 증명도 추가해야 합니다.
+      필요한 변수는 [프라이빗 패키지 레지스트리](/ko/enterprise/guides/private-package-registry)를 참조하세요.
+    </Info>
+
   </Step>
 
   <Step title="Crew 배포하기">

docs/ko/enterprise/guides/prepare-for-deployment.mdx

@@ -256,6 +256,12 @@ Crews와 Flows 모두 `src/project_name/main.py`에 진입점이 있습니다:
 1. **LLM API 키** (OpenAI, Anthropic, Google 등)
 2. **도구 API 키** - 외부 도구를 사용하는 경우 (Serper 등)
 
+<Info>
+  프로젝트가 **프라이빗 PyPI 레지스트리**의 패키지에 의존하는 경우, 레지스트리 인증 자격 증명도
+  환경 변수로 구성해야 합니다. 자세한 내용은
+  [프라이빗 패키지 레지스트리](/ko/enterprise/guides/private-package-registry) 가이드를 참조하세요.
+</Info>
+
 <Tip>
   구성 문제를 조기에 발견하기 위해 배포 전에 동일한 환경 변수로
   로컬에서 프로젝트를 테스트하세요.

docs/ko/enterprise/guides/private-package-registry.mdx

@@ -0,0 +1,261 @@
+---
+title: "프라이빗 패키지 레지스트리"
+description: "CrewAI AMP에서 인증된 PyPI 레지스트리의 프라이빗 Python 패키지 설치하기"
+icon: "lock"
+mode: "wide"
+---
+
+<Note>
+  이 가이드는 CrewAI AMP에 배포할 때 프라이빗 PyPI 레지스트리(Azure DevOps Artifacts, GitHub Packages,
+  GitLab, AWS CodeArtifact 등)에서 Python 패키지를 설치하도록 CrewAI 프로젝트를 구성하는 방법을 다룹니다.
+</Note>
+
+## 이 가이드가 필요한 경우
+
+프로젝트가 공개 PyPI가 아닌 프라이빗 레지스트리에 호스팅된 내부 또는 독점 Python 패키지에
+의존하는 경우, 다음을 수행해야 합니다:
+
+1. UV에 패키지를 **어디서** 찾을지 알려줍니다 (index URL)
+2. UV에 **어떤** 패키지가 해당 index에서 오는지 알려줍니다 (source 매핑)
+3. UV가 설치 중에 인증할 수 있도록 **자격 증명**을 제공합니다
+
+CrewAI AMP는 의존성 해결 및 설치에 [UV](https://docs.astral.sh/uv/)를 사용합니다.
+UV는 `pyproject.toml` 구성과 자격 증명용 환경 변수를 결합하여 인증된 프라이빗 레지스트리를 지원합니다.
+
+## 1단계: pyproject.toml 구성
+
+`pyproject.toml`에서 세 가지 요소가 함께 작동합니다:
+
+### 1a. 의존성 선언
+
+프라이빗 패키지를 다른 의존성과 마찬가지로 `[project.dependencies]`에 추가합니다:
+
+```toml
+[project]
+dependencies = [
+    "crewai[tools]>=0.100.1,<1.0.0",
+    "my-private-package>=1.2.0",
+]
+```
+
+### 1b. index 정의
+
+프라이빗 레지스트리를 `[[tool.uv.index]]` 아래에 명명된 index로 등록합니다:
+
+```toml
+[[tool.uv.index]]
+name = "my-private-registry"
+url = "https://pkgs.dev.azure.com/my-org/_packaging/my-feed/pypi/simple/"
+explicit = true
+```
+
+<Info>
+  `name` 필드는 중요합니다 — UV는 이를 사용하여 인증을 위한 환경 변수 이름을
+  구성합니다 (아래 [2단계](#2단계-인증-자격-증명-설정)를 참조하세요).
+
+  `explicit = true`를 설정하면 UV가 모든 패키지에 대해 이 index를 검색하지 않습니다 —
+  `[tool.uv.sources]`에서 명시적으로 매핑한 패키지만 검색합니다. 이렇게 하면 프라이빗
+  레지스트리에 대한 불필요한 쿼리를 방지하고 의존성 혼동 공격을 차단할 수 있습니다.
+</Info>
+
+### 1c. 패키지를 index에 매핑
+
+`[tool.uv.sources]`를 사용하여 프라이빗 index에서 해결해야 할 패키지를 UV에 알려줍니다:
+
+```toml
+[tool.uv.sources]
+my-private-package = { index = "my-private-registry" }
+```
+
+### 전체 예시
+
+```toml
+[project]
+name = "my-crew-project"
+version = "0.1.0"
+requires-python = ">=3.10,<=3.13"
+dependencies = [
+    "crewai[tools]>=0.100.1,<1.0.0",
+    "my-private-package>=1.2.0",
+]
+
+[tool.crewai]
+type = "crew"
+
+[[tool.uv.index]]
+name = "my-private-registry"
+url = "https://pkgs.dev.azure.com/my-org/_packaging/my-feed/pypi/simple/"
+explicit = true
+
+[tool.uv.sources]
+my-private-package = { index = "my-private-registry" }
+```
+
+`pyproject.toml`을 업데이트한 후 lock 파일을 다시 생성합니다:
+
+```bash
+uv lock
+```
+
+<Warning>
+  업데이트된 `uv.lock`을 항상 `pyproject.toml` 변경 사항과 함께 커밋하세요.
+  lock 파일은 배포에 필수입니다 — [배포 준비하기](/ko/enterprise/guides/prepare-for-deployment)를 참조하세요.
+</Warning>
+
+## 2단계: 인증 자격 증명 설정
+
+UV는 `pyproject.toml`에서 정의한 index 이름을 기반으로 한 명명 규칙을 따르는
+환경 변수를 사용하여 프라이빗 index에 인증합니다:
+
+```
+UV_INDEX_{UPPER_NAME}_USERNAME
+UV_INDEX_{UPPER_NAME}_PASSWORD
+```
+
+여기서 `{UPPER_NAME}`은 index 이름을 **대문자**로 변환하고 **하이픈을 언더스코어로 대체**한 것입니다.
+
+예를 들어, `my-private-registry`라는 이름의 index는 다음을 사용합니다:
+
+| 변수 | 값 |
+|------|-----|
+| `UV_INDEX_MY_PRIVATE_REGISTRY_USERNAME` | 레지스트리 사용자 이름 또는 토큰 이름 |
+| `UV_INDEX_MY_PRIVATE_REGISTRY_PASSWORD` | 레지스트리 비밀번호 또는 토큰/PAT |
+
+<Warning>
+  이 환경 변수는 CrewAI AMP **환경 변수** 설정을 통해 **반드시** 추가해야 합니다 —
+  전역적으로 또는 배포 수준에서. `.env` 파일에 설정하거나 프로젝트에 하드코딩할 수 없습니다.
+
+  아래 [AMP에서 환경 변수 설정](#amp에서-환경-변수-설정)을 참조하세요.
+</Warning>
+
+## 레지스트리 제공업체 참조
+
+아래 표는 일반적인 레지스트리 제공업체의 index URL 형식과 자격 증명 값을 보여줍니다.
+자리 표시자 값을 실제 조직 및 피드 세부 정보로 대체하세요.
+
+| 제공업체 | Index URL | 사용자 이름 | 비밀번호 |
+|---------|-----------|-----------|---------|
+| **Azure DevOps Artifacts** | `https://pkgs.dev.azure.com/{org}/_packaging/{feed}/pypi/simple/` | 비어 있지 않은 임의의 문자열 (예: `token`) | Packaging Read 범위의 Personal Access Token (PAT) |
+| **GitHub Packages** | `https://pypi.pkg.github.com/{owner}/simple/` | GitHub 사용자 이름 | `read:packages` 범위의 Personal Access Token (classic) |
+| **GitLab Package Registry** | `https://gitlab.com/api/v4/projects/{project_id}/packages/pypi/simple/` | `__token__` | `read_api` 범위의 Project 또는 Personal Access Token |
+| **AWS CodeArtifact** | `aws codeartifact get-repository-endpoint`의 URL 사용 | `aws` | `aws codeartifact get-authorization-token`의 토큰 |
+| **Google Artifact Registry** | `https://{region}-python.pkg.dev/{project}/{repo}/simple/` | `_json_key_base64` | Base64로 인코딩된 서비스 계정 키 |
+| **JFrog Artifactory** | `https://{instance}.jfrog.io/artifactory/api/pypi/{repo}/simple/` | 사용자 이름 또는 이메일 | API 키 또는 ID 토큰 |
+| **자체 호스팅 (devpi, Nexus 등)** | 레지스트리의 simple API URL | 레지스트리 사용자 이름 | 레지스트리 비밀번호 |
+
+<Tip>
+  **AWS CodeArtifact**의 경우 인증 토큰이 주기적으로 만료됩니다.
+  만료되면 `UV_INDEX_*_PASSWORD` 값을 갱신해야 합니다.
+  CI/CD 파이프라인에서 이를 자동화하는 것을 고려하세요.
+</Tip>
+
+## AMP에서 환경 변수 설정
+
+프라이빗 레지스트리 자격 증명은 CrewAI AMP에서 환경 변수로 구성해야 합니다.
+두 가지 옵션이 있습니다:
+
+<Tabs>
+  <Tab title="웹 인터페이스">
+    1. [CrewAI AMP](https://app.crewai.com)에 로그인합니다
+    2. 자동화로 이동합니다
+    3. **Environment Variables** 탭을 엽니다
+    4. 각 변수 (`UV_INDEX_*_USERNAME` 및 `UV_INDEX_*_PASSWORD`)에 값을 추가합니다
+
+    자세한 내용은 [AMP에 배포하기 — 환경 변수 설정하기](/ko/enterprise/guides/deploy-to-amp#환경-변수-설정하기) 단계를 참조하세요.
+  </Tab>
+  <Tab title="CLI 배포">
+    `crewai deploy create`를 실행하기 전에 로컬 `.env` 파일에 변수를 추가합니다.
+    CLI가 이를 안전하게 플랫폼으로 전송합니다:
+
+    ```bash
+    # .env
+    OPENAI_API_KEY=sk-...
+    UV_INDEX_MY_PRIVATE_REGISTRY_USERNAME=token
+    UV_INDEX_MY_PRIVATE_REGISTRY_PASSWORD=your-pat-here
+    ```
+
+    ```bash
+    crewai deploy create
+    ```
+  </Tab>
+</Tabs>
+
+<Warning>
+  자격 증명을 저장소에 **절대** 커밋하지 마세요. 모든 비밀 정보에는 AMP 환경 변수를 사용하세요.
+  `.env` 파일은 `.gitignore`에 포함되어야 합니다.
+</Warning>
+
+기존 배포의 자격 증명을 업데이트하려면 [Crew 업데이트하기 — 환경 변수](/ko/enterprise/guides/update-crew)를 참조하세요.
+
+## 전체 동작 흐름
+
+CrewAI AMP가 자동화를 빌드할 때, 해결 흐름은 다음과 같이 작동합니다:
+
+<Steps>
+  <Step title="빌드 시작">
+    AMP가 저장소를 가져오고 `pyproject.toml`과 `uv.lock`을 읽습니다.
+  </Step>
+  <Step title="UV가 의존성 해결">
+    UV가 `[tool.uv.sources]`를 읽어 각 패키지가 어떤 index에서 와야 하는지 결정합니다.
+  </Step>
+  <Step title="UV가 인증">
+    각 프라이빗 index에 대해 UV가 AMP에서 구성한 환경 변수에서
+    `UV_INDEX_{NAME}_USERNAME`과 `UV_INDEX_{NAME}_PASSWORD`를 조회합니다.
+  </Step>
+  <Step title="패키지 설치">
+    UV가 공개(PyPI) 및 프라이빗(레지스트리) 패키지를 모두 다운로드하고 설치합니다.
+  </Step>
+  <Step title="자동화 실행">
+    모든 의존성이 사용 가능한 상태에서 crew 또는 flow가 시작됩니다.
+  </Step>
+</Steps>
+
+## 문제 해결
+
+### 빌드 중 인증 오류
+
+**증상**: 프라이빗 패키지를 해결할 때 `401 Unauthorized` 또는 `403 Forbidden`으로 빌드가 실패합니다.
+
+**확인사항**:
+- `UV_INDEX_*` 환경 변수 이름이 index 이름과 정확히 일치하는지 확인합니다 (대문자, 하이픈 -> 언더스코어)
+- 자격 증명이 로컬 `.env`뿐만 아니라 AMP 환경 변수에 설정되어 있는지 확인합니다
+- 토큰/PAT에 패키지 피드에 필요한 읽기 권한이 있는지 확인합니다
+- 토큰이 만료되지 않았는지 확인합니다 (특히 AWS CodeArtifact의 경우)
+
+### 패키지를 찾을 수 없음
+
+**증상**: `No matching distribution found for my-private-package`.
+
+**확인사항**:
+- `pyproject.toml`의 index URL이 `/simple/`로 끝나는지 확인합니다
+- `[tool.uv.sources]` 항목이 올바른 패키지 이름을 올바른 index 이름에 매핑하는지 확인합니다
+- 패키지가 실제로 프라이빗 레지스트리에 게시되어 있는지 확인합니다
+- 동일한 자격 증명으로 로컬에서 `uv lock`을 실행하여 해결이 작동하는지 확인합니다
+
+### Lock 파일 충돌
+
+**증상**: 프라이빗 index를 추가한 후 `uv lock`이 실패하거나 예상치 못한 결과를 생성합니다.
+
+**해결책**: 로컬에서 자격 증명을 설정하고 다시 생성합니다:
+
+```bash
+export UV_INDEX_MY_PRIVATE_REGISTRY_USERNAME=token
+export UV_INDEX_MY_PRIVATE_REGISTRY_PASSWORD=your-pat
+uv lock
+```
+
+그런 다음 업데이트된 `uv.lock`을 커밋합니다.
+
+## 관련 가이드
+
+<CardGroup cols={3}>
+  <Card title="배포 준비하기" icon="clipboard-check" href="/ko/enterprise/guides/prepare-for-deployment">
+    배포 전에 프로젝트 구조와 의존성을 확인합니다.
+  </Card>
+  <Card title="AMP에 배포하기" icon="rocket" href="/ko/enterprise/guides/deploy-to-amp">
+    crew 또는 flow를 배포하고 환경 변수를 구성합니다.
+  </Card>
+  <Card title="Crew 업데이트하기" icon="arrows-rotate" href="/ko/enterprise/guides/update-crew">
+    환경 변수를 업데이트하고 실행 중인 배포에 변경 사항을 푸시합니다.
+  </Card>
+</CardGroup>

docs/ko/learn/human-feedback-in-flows.mdx

@@ -98,33 +98,43 @@ def handle_feedback(self, result):
 `emit`을 지정하면, 데코레이터는 라우터가 됩니다. 인간의 자유 형식 피드백이 LLM에 의해 해석되어 지정된 outcome 중 하나로 매핑됩니다:
 
 ```python Code
-@start()
-@human_feedback(
-    message="이 콘텐츠의 출판을 승인하시겠습니까?",
-    emit=["approved", "rejected", "needs_revision"],
-    llm="gpt-4o-mini",
-    default_outcome="needs_revision",
-)
-def review_content(self):
-    return "블로그 게시물 초안 내용..."
+from crewai.flow.flow import Flow, start, listen, or_
+from crewai.flow.human_feedback import human_feedback
 
-@listen("approved")
-def publish(self, result):
-    print(f"출판 중! 사용자 의견: {result.feedback}")
+class ReviewFlow(Flow):
+    @start()
+    def generate_content(self):
+        return "블로그 게시물 초안 내용..."
 
-@listen("rejected")
-def discard(self, result):
-    print(f"폐기됨. 이유: {result.feedback}")
+    @human_feedback(
+        message="이 콘텐츠의 출판을 승인하시겠습니까?",
+        emit=["approved", "rejected", "needs_revision"],
+        llm="gpt-4o-mini",
+        default_outcome="needs_revision",
+    )
+    @listen(or_("generate_content", "needs_revision"))
+    def review_content(self):
+        return "블로그 게시물 초안 내용..."
 
-@listen("needs_revision")
-def revise(self, result):
-    print(f"다음을 기반으로 수정 중: {result.feedback}")
+    @listen("approved")
+    def publish(self, result):
+        print(f"출판 중! 사용자 의견: {result.feedback}")
+
+    @listen("rejected")
+    def discard(self, result):
+        print(f"폐기됨. 이유: {result.feedback}")
 ```
 
+사용자가 "더 자세한 내용이 필요합니다"와 같이 말하면, LLM이 이를 `"needs_revision"`으로 매핑하고, `or_()`를 통해 `review_content`가 다시 트리거됩니다 — 수정 루프가 생성됩니다. outcome이 `"approved"` 또는 `"rejected"`가 될 때까지 루프가 계속됩니다.
+
 <Tip>
 LLM은 가능한 경우 구조화된 출력(function calling)을 사용하여 응답이 지정된 outcome 중 하나임을 보장합니다. 이로 인해 라우팅이 신뢰할 수 있고 예측 가능해집니다.
 </Tip>
 
+<Warning>
+`@start()` 메서드는 flow 시작 시 한 번만 실행됩니다. 수정 루프가 필요한 경우, start 메서드를 review 메서드와 분리하고 review 메서드에 `@listen(or_("trigger", "revision_outcome"))`를 사용하여 self-loop을 활성화하세요.
+</Warning>
+
 ## HumanFeedbackResult
 
 `HumanFeedbackResult` 데이터클래스는 인간 피드백 상호작용에 대한 모든 정보를 포함합니다:
@@ -193,116 +203,162 @@ def summarize(self):
 <CodeGroup>
 
 ```python Code
-from crewai.flow.flow import Flow, start, listen
+from crewai.flow.flow import Flow, start, listen, or_
 from crewai.flow.human_feedback import human_feedback, HumanFeedbackResult
 from pydantic import BaseModel
 
 
 class ContentState(BaseModel):
-    topic: str = ""
     draft: str = ""
-    final_content: str = ""
     revision_count: int = 0
+    status: str = "pending"
 
 
 class ContentApprovalFlow(Flow[ContentState]):
-    """콘텐츠를 생성하고 인간의 승인을 받는 Flow입니다."""
+    """콘텐츠를 생성하고 승인될 때까지 반복하는 Flow."""
 
     @start()
-    def get_topic(self):
-        self.state.topic = input("어떤 주제에 대해 글을 쓸까요? ")
-        return self.state.topic
-
-    @listen(get_topic)
-    def generate_draft(self, topic):
-        # 실제 사용에서는 LLM을 호출합니다
-        self.state.draft = f"# {topic}\n\n{topic}에 대한 초안입니다..."
+    def generate_draft(self):
+        self.state.draft = "# AI 안전\n\nAI 안전에 대한 초안..."
         return self.state.draft
 
-    @listen(generate_draft)
     @human_feedback(
-        message="이 초안을 검토해 주세요. 'approved', 'rejected'로 답하거나 수정 피드백을 제공해 주세요:",
+        message="이 초안을 검토해 주세요. 승인, 거부 또는 변경이 필요한 사항을 설명해 주세요:",
         emit=["approved", "rejected", "needs_revision"],
         llm="gpt-4o-mini",
         default_outcome="needs_revision",
     )
-    def review_draft(self, draft):
-        return draft
+    @listen(or_("generate_draft", "needs_revision"))
+    def review_draft(self):
+        self.state.revision_count += 1
+        return f"{self.state.draft} (v{self.state.revision_count})"
 
     @listen("approved")
     def publish_content(self, result: HumanFeedbackResult):
-        self.state.final_content = result.output
-        print("\n✅ 콘텐츠가 승인되어 출판되었습니다!")
-        print(f"검토자 코멘트: {result.feedback}")
+        self.state.status = "published"
+        print(f"콘텐츠 승인 및 게시! 리뷰어 의견: {result.feedback}")
         return "published"
 
     @listen("rejected")
     def handle_rejection(self, result: HumanFeedbackResult):
-        print("\n❌ 콘텐츠가 거부되었습니다")
-        print(f"이유: {result.feedback}")
+        self.state.status = "rejected"
+        print(f"콘텐츠 거부됨. 이유: {result.feedback}")
         return "rejected"
 
-    @listen("needs_revision")
-    def revise_content(self, result: HumanFeedbackResult):
-        self.state.revision_count += 1
-        print(f"\n📝 수정 #{self.state.revision_count} 요청됨")
-        print(f"피드백: {result.feedback}")
 
-        # 실제 Flow에서는 generate_draft로 돌아갈 수 있습니다
-        # 이 예제에서는 단순히 확인합니다
-        return "revision_requested"
-
-
-# Flow 실행
 flow = ContentApprovalFlow()
 result = flow.kickoff()
-print(f"\nFlow 완료. 요청된 수정: {flow.state.revision_count}")
+print(f"\nFlow 완료. 상태: {flow.state.status}, 검토 횟수: {flow.state.revision_count}")
 ```
 
 ```text Output
-어떤 주제에 대해 글을 쓸까요? AI 안전
+==================================================
+OUTPUT FOR REVIEW:
+==================================================
+# AI 안전
+
+AI 안전에 대한 초안... (v1)
+==================================================
+
+이 초안을 검토해 주세요. 승인, 거부 또는 변경이 필요한 사항을 설명해 주세요:
+(Press Enter to skip, or type your feedback)
+
+Your feedback: 더 자세한 내용이 필요합니다
 
 ==================================================
 OUTPUT FOR REVIEW:
 ==================================================
 # AI 안전
 
-AI 안전에 대한 초안입니다...
+AI 안전에 대한 초안... (v2)
 ==================================================
 
-이 초안을 검토해 주세요. 'approved', 'rejected'로 답하거나 수정 피드백을 제공해 주세요:
+이 초안을 검토해 주세요. 승인, 거부 또는 변경이 필요한 사항을 설명해 주세요:
 (Press Enter to skip, or type your feedback)
 
 Your feedback: 좋아 보입니다, 승인!
 
-✅ 콘텐츠가 승인되어 출판되었습니다!
-검토자 코멘트: 좋아 보입니다, 승인!
+콘텐츠 승인 및 게시! 리뷰어 의견: 좋아 보입니다, 승인!
 
-Flow 완료. 요청된 수정: 0
+Flow 완료. 상태: published, 검토 횟수: 2
 ```
 
 </CodeGroup>
 
 ## 다른 데코레이터와 결합하기
 
-`@human_feedback` 데코레이터는 다른 Flow 데코레이터와 함께 작동합니다. 가장 안쪽 데코레이터(함수에 가장 가까운)로 배치하세요:
+`@human_feedback` 데코레이터는 `@start()`, `@listen()`, `or_()`와 함께 작동합니다. 데코레이터 순서는 두 가지 모두 동작합니다—프레임워크가 양방향으로 속성을 전파합니다—하지만 권장 패턴은 다음과 같습니다:
 
 ```python Code
-# 올바름: @human_feedback이 가장 안쪽(함수에 가장 가까움)
+# Flow 시작 시 일회성 검토 (self-loop 없음)
 @start()
-@human_feedback(message="이것을 검토해 주세요:")
+@human_feedback(message="이것을 검토해 주세요:", emit=["approved", "rejected"], llm="gpt-4o-mini")
 def my_start_method(self):
     return "content"
 
+# 리스너에서 선형 검토 (self-loop 없음)
 @listen(other_method)
-@human_feedback(message="이것도 검토해 주세요:")
+@human_feedback(message="이것도 검토해 주세요:", emit=["good", "bad"], llm="gpt-4o-mini")
 def my_listener(self, data):
     return f"processed: {data}"
+
+# Self-loop: 수정을 위해 반복할 수 있는 검토
+@human_feedback(message="승인 또는 수정 요청?", emit=["approved", "revise"], llm="gpt-4o-mini")
+@listen(or_("upstream_method", "revise"))
+def review_with_loop(self):
+    return "content for review"
 ```
 
-<Tip>
-`@human_feedback`를 가장 안쪽 데코레이터(마지막/함수에 가장 가까움)로 배치하여 메서드를 직접 래핑하고 Flow 시스템에 전달하기 전에 반환 값을 캡처할 수 있도록 하세요.
-</Tip>
+### Self-loop 패턴
+
+수정 루프를 만들려면 `or_()`를 사용하여 검토 메서드가 **상위 트리거**와 **자체 수정 outcome**을 모두 리스닝해야 합니다:
+
+```python Code
+@start()
+def generate(self):
+    return "initial draft"
+
+@human_feedback(
+    message="승인하시겠습니까, 아니면 변경을 요청하시겠습니까?",
+    emit=["revise", "approved"],
+    llm="gpt-4o-mini",
+    default_outcome="approved",
+)
+@listen(or_("generate", "revise"))
+def review(self):
+    return "content"
+
+@listen("approved")
+def publish(self):
+    return "published"
+```
+
+outcome이 `"revise"`이면 flow가 `review`로 다시 라우팅됩니다 (`or_()`를 통해 `"revise"`를 리스닝하기 때문). outcome이 `"approved"`이면 flow가 `publish`로 계속됩니다. flow 엔진이 라우터를 "한 번만 실행" 규칙에서 제외하여 각 루프 반복마다 재실행할 수 있기 때문에 이 패턴이 동작합니다.
+
+### 체인된 라우터
+
+한 라우터의 outcome으로 트리거된 리스너가 그 자체로 라우터가 될 수 있습니다:
+
+```python Code
+@start()
+@human_feedback(message="첫 번째 검토:", emit=["approved", "rejected"], llm="gpt-4o-mini")
+def draft(self):
+    return "draft content"
+
+@listen("approved")
+@human_feedback(message="최종 검토:", emit=["publish", "revise"], llm="gpt-4o-mini")
+def final_review(self, prev):
+    return "final content"
+
+@listen("publish")
+def on_publish(self, prev):
+    return "published"
+```
+
+### 제한 사항
+
+- **`@start()` 메서드는 한 번만 실행**: `@start()` 메서드는 self-loop할 수 없습니다. 수정 주기가 필요하면 별도의 `@start()` 메서드를 진입점으로 사용하고 `@listen()` 메서드에 `@human_feedback`를 배치하세요.
+- **동일 메서드에 `@start()` + `@listen()` 불가**: 이는 Flow 프레임워크 제약입니다. 메서드는 시작점이거나 리스너여야 하며, 둘 다일 수 없습니다.
 
 ## 모범 사례
 
@@ -516,9 +572,9 @@ class ContentPipeline(Flow):
     @start()
     @human_feedback(
         message="이 콘텐츠의 출판을 승인하시겠습니까?",
-        emit=["approved", "rejected", "needs_revision"],
+        emit=["approved", "rejected"],
         llm="gpt-4o-mini",
-        default_outcome="needs_revision",
+        default_outcome="rejected",
         provider=SlackNotificationProvider("#content-reviews"),
     )
     def generate_content(self):
@@ -534,11 +590,6 @@ class ContentPipeline(Flow):
         print(f"보관됨. 이유: {result.feedback}")
         return {"status": "archived"}
 
-    @listen("needs_revision")
-    def queue_revision(self, result):
-        print(f"수정 대기열에 추가됨: {result.feedback}")
-        return {"status": "revision_needed"}
-
 
 # Flow 시작 (Slack 응답을 기다리며 일시 중지)
 def start_content_pipeline():
@@ -594,22 +645,22 @@ async def on_slack_feedback_async(flow_id: str, slack_message: str):
 ```python Code
 class ArticleReviewFlow(Flow):
     @start()
-    @human_feedback(
-        message="Review this article draft:",
-        emit=["approved", "needs_revision"],
-        llm="gpt-4o-mini",
-        learn=True,  # HITL 학습 활성화
-    )
     def generate_article(self):
         return self.crew.kickoff(inputs={"topic": "AI Safety"}).raw
 
+    @human_feedback(
+        message="이 글 초안을 검토해 주세요:",
+        emit=["approved", "needs_revision"],
+        llm="gpt-4o-mini",
+        learn=True,
+    )
+    @listen(or_("generate_article", "needs_revision"))
+    def review_article(self):
+        return self.last_human_feedback.output if self.last_human_feedback else "article draft"
+
     @listen("approved")
     def publish(self):
         print(f"Publishing: {self.last_human_feedback.output}")
-
-    @listen("needs_revision")
-    def revise(self):
-        print("Revising based on feedback...")
 ```
 
 **첫 번째 실행**: 인간이 원시 출력을 보고 "사실에 대한 주장에는 항상 인용을 포함하세요."라고 말합니다. 교훈이 추출되어 메모리에 저장됩니다.

docs/pt-BR/enterprise/features/flow-hitl-management.mdx

@@ -38,22 +38,21 @@ O CrewAI Enterprise oferece um sistema abrangente de gerenciamento Human-in-the-
 Configure checkpoints de revisão humana em seus Flows usando o decorador `@human_feedback`. Quando a execução atinge um ponto de revisão, o sistema pausa, notifica o responsável via email e aguarda uma resposta.
 
 ```python
-from crewai.flow.flow import Flow, start, listen
+from crewai.flow.flow import Flow, start, listen, or_
 from crewai.flow.human_feedback import human_feedback, HumanFeedbackResult
 
 class ContentApprovalFlow(Flow):
     @start()
     def generate_content(self):
-        # IA gera conteúdo
         return "Texto de marketing gerado para campanha Q1..."
 
-    @listen(generate_content)
     @human_feedback(
         message="Por favor, revise este conteúdo para conformidade com a marca:",
         emit=["approved", "rejected", "needs_revision"],
     )
-    def review_content(self, content):
-        return content
+    @listen(or_("generate_content", "needs_revision"))
+    def review_content(self):
+        return "Texto de marketing para revisão..."
 
     @listen("approved")
     def publish_content(self, result: HumanFeedbackResult):
@@ -62,10 +61,6 @@ class ContentApprovalFlow(Flow):
     @listen("rejected")
     def archive_content(self, result: HumanFeedbackResult):
         print(f"Conteúdo rejeitado. Motivo: {result.feedback}")
-
-    @listen("needs_revision")
-    def revise_content(self, result: HumanFeedbackResult):
-        print(f"Revisão solicitada: {result.feedback}")
 ```
 
 Para detalhes completos de implementação, consulte o guia [Feedback Humano em Flows](/pt-BR/learn/human-feedback-in-flows).

docs/pt-BR/enterprise/guides/deploy-to-amp.mdx

@@ -176,6 +176,11 @@ Você precisa enviar seu crew para um repositório do GitHub. Caso ainda não te
       ![Definir Variáveis de Ambiente](/images/enterprise/set-env-variables.png)
     </Frame>
 
+    <Info>
+      Usando pacotes Python privados? Você também precisará adicionar suas credenciais de registro aqui.
+      Consulte [Registros de Pacotes Privados](/pt-BR/enterprise/guides/private-package-registry) para as variáveis necessárias.
+    </Info>
+
   </Step>
 
   <Step title="Implante Seu Crew">

docs/pt-BR/enterprise/guides/prepare-for-deployment.mdx

@@ -256,6 +256,12 @@ Antes da implantação, certifique-se de ter:
 1. **Chaves de API de LLM** prontas (OpenAI, Anthropic, Google, etc.)
 2. **Chaves de API de ferramentas** se estiver usando ferramentas externas (Serper, etc.)
 
+<Info>
+  Se seu projeto depende de pacotes de um **registro PyPI privado**, você também precisará configurar
+  credenciais de autenticação do registro como variáveis de ambiente. Consulte o guia
+  [Registros de Pacotes Privados](/pt-BR/enterprise/guides/private-package-registry) para mais detalhes.
+</Info>
+
 <Tip>
   Teste seu projeto localmente com as mesmas variáveis de ambiente antes de implantar
   para detectar problemas de configuração antecipadamente.

docs/pt-BR/enterprise/guides/private-package-registry.mdx

@@ -0,0 +1,263 @@
+---
+title: "Registros de Pacotes Privados"
+description: "Instale pacotes Python privados de registros PyPI autenticados no CrewAI AMP"
+icon: "lock"
+mode: "wide"
+---
+
+<Note>
+  Este guia aborda como configurar seu projeto CrewAI para instalar pacotes Python
+  de registros PyPI privados (Azure DevOps Artifacts, GitHub Packages, GitLab, AWS CodeArtifact, etc.)
+  ao implantar no CrewAI AMP.
+</Note>
+
+## Quando Você Precisa Disso
+
+Se seu projeto depende de pacotes Python internos ou proprietários hospedados em um registro privado
+em vez do PyPI público, você precisará:
+
+1. Informar ao UV **onde** encontrar o pacote (uma URL de index)
+2. Informar ao UV **quais** pacotes vêm desse index (um mapeamento de source)
+3. Fornecer **credenciais** para que o UV possa autenticar durante a instalação
+
+O CrewAI AMP usa [UV](https://docs.astral.sh/uv/) para resolução e instalação de dependências.
+O UV suporta registros privados autenticados por meio da configuração do `pyproject.toml` combinada
+com variáveis de ambiente para credenciais.
+
+## Passo 1: Configurar o pyproject.toml
+
+Três elementos trabalham juntos no seu `pyproject.toml`:
+
+### 1a. Declarar a dependência
+
+Adicione o pacote privado ao seu `[project.dependencies]` como qualquer outra dependência:
+
+```toml
+[project]
+dependencies = [
+    "crewai[tools]>=0.100.1,<1.0.0",
+    "my-private-package>=1.2.0",
+]
+```
+
+### 1b. Definir o index
+
+Registre seu registro privado como um index nomeado em `[[tool.uv.index]]`:
+
+```toml
+[[tool.uv.index]]
+name = "my-private-registry"
+url = "https://pkgs.dev.azure.com/my-org/_packaging/my-feed/pypi/simple/"
+explicit = true
+```
+
+<Info>
+  O campo `name` é importante — o UV o utiliza para construir os nomes das variáveis de ambiente
+  para autenticação (veja o [Passo 2](#passo-2-configurar-credenciais-de-autenticação) abaixo).
+
+  Definir `explicit = true` significa que o UV não consultará esse index para todos os pacotes — apenas
+  os que você mapear explicitamente em `[tool.uv.sources]`. Isso evita consultas desnecessárias
+  ao seu registro privado e protege contra ataques de confusão de dependências.
+</Info>
+
+### 1c. Mapear o pacote para o index
+
+Informe ao UV quais pacotes devem ser resolvidos a partir do seu index privado usando `[tool.uv.sources]`:
+
+```toml
+[tool.uv.sources]
+my-private-package = { index = "my-private-registry" }
+```
+
+### Exemplo completo
+
+```toml
+[project]
+name = "my-crew-project"
+version = "0.1.0"
+requires-python = ">=3.10,<=3.13"
+dependencies = [
+    "crewai[tools]>=0.100.1,<1.0.0",
+    "my-private-package>=1.2.0",
+]
+
+[tool.crewai]
+type = "crew"
+
+[[tool.uv.index]]
+name = "my-private-registry"
+url = "https://pkgs.dev.azure.com/my-org/_packaging/my-feed/pypi/simple/"
+explicit = true
+
+[tool.uv.sources]
+my-private-package = { index = "my-private-registry" }
+```
+
+Após atualizar o `pyproject.toml`, regenere seu arquivo lock:
+
+```bash
+uv lock
+```
+
+<Warning>
+  Sempre faça commit do `uv.lock` atualizado junto com as alterações no `pyproject.toml`.
+  O arquivo lock é obrigatório para implantação — veja [Preparar para Implantação](/pt-BR/enterprise/guides/prepare-for-deployment).
+</Warning>
+
+## Passo 2: Configurar Credenciais de Autenticação
+
+O UV autentica em indexes privados usando variáveis de ambiente que seguem uma convenção de nomenclatura
+baseada no nome do index que você definiu no `pyproject.toml`:
+
+```
+UV_INDEX_{UPPER_NAME}_USERNAME
+UV_INDEX_{UPPER_NAME}_PASSWORD
+```
+
+Onde `{UPPER_NAME}` é o nome do seu index convertido para **maiúsculas** com **hifens substituídos por underscores**.
+
+Por exemplo, um index chamado `my-private-registry` usa:
+
+| Variável | Valor |
+|----------|-------|
+| `UV_INDEX_MY_PRIVATE_REGISTRY_USERNAME` | Seu nome de usuário ou nome do token do registro |
+| `UV_INDEX_MY_PRIVATE_REGISTRY_PASSWORD` | Sua senha ou token/PAT do registro |
+
+<Warning>
+  Essas variáveis de ambiente **devem** ser adicionadas pelas configurações de **Variáveis de Ambiente** do CrewAI AMP —
+  globalmente ou no nível da implantação. Elas não podem ser definidas em arquivos `.env` ou codificadas no seu projeto.
+
+  Veja [Configurar Variáveis de Ambiente no AMP](#configurar-variáveis-de-ambiente-no-amp) abaixo.
+</Warning>
+
+## Referência de Provedores de Registro
+
+A tabela abaixo mostra o formato da URL de index e os valores de credenciais para provedores de registro comuns.
+Substitua os valores de exemplo pelos detalhes reais da sua organização e feed.
+
+| Provedor | URL do Index | Usuário | Senha |
+|----------|-------------|---------|-------|
+| **Azure DevOps Artifacts** | `https://pkgs.dev.azure.com/{org}/_packaging/{feed}/pypi/simple/` | Qualquer string não vazia (ex: `token`) | Personal Access Token (PAT) com escopo Packaging Read |
+| **GitHub Packages** | `https://pypi.pkg.github.com/{owner}/simple/` | Nome de usuário do GitHub | Personal Access Token (classic) com escopo `read:packages` |
+| **GitLab Package Registry** | `https://gitlab.com/api/v4/projects/{project_id}/packages/pypi/simple/` | `__token__` | Project ou Personal Access Token com escopo `read_api` |
+| **AWS CodeArtifact** | Use a URL de `aws codeartifact get-repository-endpoint` | `aws` | Token de `aws codeartifact get-authorization-token` |
+| **Google Artifact Registry** | `https://{region}-python.pkg.dev/{project}/{repo}/simple/` | `_json_key_base64` | Chave de conta de serviço codificada em Base64 |
+| **JFrog Artifactory** | `https://{instance}.jfrog.io/artifactory/api/pypi/{repo}/simple/` | Nome de usuário ou email | Chave API ou token de identidade |
+| **Auto-hospedado (devpi, Nexus, etc.)** | URL da API simple do seu registro | Nome de usuário do registro | Senha do registro |
+
+<Tip>
+  Para **AWS CodeArtifact**, o token de autorização expira periodicamente.
+  Você precisará atualizar o valor de `UV_INDEX_*_PASSWORD` quando ele expirar.
+  Considere automatizar isso no seu pipeline de CI/CD.
+</Tip>
+
+## Configurar Variáveis de Ambiente no AMP
+
+As credenciais do registro privado devem ser configuradas como variáveis de ambiente no CrewAI AMP.
+Você tem duas opções:
+
+<Tabs>
+  <Tab title="Interface Web">
+    1. Faça login no [CrewAI AMP](https://app.crewai.com)
+    2. Navegue até sua automação
+    3. Abra a aba **Environment Variables**
+    4. Adicione cada variável (`UV_INDEX_*_USERNAME` e `UV_INDEX_*_PASSWORD`) com seu valor
+
+    Veja o passo [Deploy para AMP — Definir Variáveis de Ambiente](/pt-BR/enterprise/guides/deploy-to-amp#definir-as-variáveis-de-ambiente) para detalhes.
+  </Tab>
+  <Tab title="Implantação via CLI">
+    Adicione as variáveis ao seu arquivo `.env` local antes de executar `crewai deploy create`.
+    A CLI as transferirá com segurança para a plataforma:
+
+    ```bash
+    # .env
+    OPENAI_API_KEY=sk-...
+    UV_INDEX_MY_PRIVATE_REGISTRY_USERNAME=token
+    UV_INDEX_MY_PRIVATE_REGISTRY_PASSWORD=your-pat-here
+    ```
+
+    ```bash
+    crewai deploy create
+    ```
+  </Tab>
+</Tabs>
+
+<Warning>
+  **Nunca** faça commit de credenciais no seu repositório. Use variáveis de ambiente do AMP para todos os segredos.
+  O arquivo `.env` deve estar listado no `.gitignore`.
+</Warning>
+
+Para atualizar credenciais em uma implantação existente, veja [Atualizar Seu Crew — Variáveis de Ambiente](/pt-BR/enterprise/guides/update-crew).
+
+## Como Tudo se Conecta
+
+Quando o CrewAI AMP faz o build da sua automação, o fluxo de resolução funciona assim:
+
+<Steps>
+  <Step title="Build inicia">
+    O AMP busca seu repositório e lê o `pyproject.toml` e o `uv.lock`.
+  </Step>
+  <Step title="UV resolve dependências">
+    O UV lê `[tool.uv.sources]` para determinar de qual index cada pacote deve vir.
+  </Step>
+  <Step title="UV autentica">
+    Para cada index privado, o UV busca `UV_INDEX_{NAME}_USERNAME` e `UV_INDEX_{NAME}_PASSWORD`
+    nas variáveis de ambiente que você configurou no AMP.
+  </Step>
+  <Step title="Pacotes são instalados">
+    O UV baixa e instala todos os pacotes — tanto públicos (do PyPI) quanto privados (do seu registro).
+  </Step>
+  <Step title="Automação executa">
+    Seu crew ou flow inicia com todas as dependências disponíveis.
+  </Step>
+</Steps>
+
+## Solução de Problemas
+
+### Erros de Autenticação Durante o Build
+
+**Sintoma**: Build falha com `401 Unauthorized` ou `403 Forbidden` ao resolver um pacote privado.
+
+**Verifique**:
+- Os nomes das variáveis de ambiente `UV_INDEX_*` correspondem exatamente ao nome do seu index (maiúsculas, hifens -> underscores)
+- As credenciais estão definidas nas variáveis de ambiente do AMP, não apenas em um `.env` local
+- Seu token/PAT tem as permissões de leitura necessárias para o feed de pacotes
+- O token não expirou (especialmente relevante para AWS CodeArtifact)
+
+### Pacote Não Encontrado
+
+**Sintoma**: `No matching distribution found for my-private-package`.
+
+**Verifique**:
+- A URL do index no `pyproject.toml` termina com `/simple/`
+- A entrada `[tool.uv.sources]` mapeia o nome correto do pacote para o nome correto do index
+- O pacote está realmente publicado no seu registro privado
+- Execute `uv lock` localmente com as mesmas credenciais para verificar se a resolução funciona
+
+### Conflitos no Arquivo Lock
+
+**Sintoma**: `uv lock` falha ou produz resultados inesperados após adicionar um index privado.
+
+**Solução**: Defina as credenciais localmente e regenere:
+
+```bash
+export UV_INDEX_MY_PRIVATE_REGISTRY_USERNAME=token
+export UV_INDEX_MY_PRIVATE_REGISTRY_PASSWORD=your-pat
+uv lock
+```
+
+Em seguida, faça commit do `uv.lock` atualizado.
+
+## Guias Relacionados
+
+<CardGroup cols={3}>
+  <Card title="Preparar para Implantação" icon="clipboard-check" href="/pt-BR/enterprise/guides/prepare-for-deployment">
+    Verifique a estrutura do projeto e as dependências antes de implantar.
+  </Card>
+  <Card title="Deploy para AMP" icon="rocket" href="/pt-BR/enterprise/guides/deploy-to-amp">
+    Implante seu crew ou flow e configure variáveis de ambiente.
+  </Card>
+  <Card title="Atualizar Seu Crew" icon="arrows-rotate" href="/pt-BR/enterprise/guides/update-crew">
+    Atualize variáveis de ambiente e envie alterações para uma implantação em execução.
+  </Card>
+</CardGroup>

docs/pt-BR/learn/human-feedback-in-flows.mdx

@@ -98,33 +98,43 @@ def handle_feedback(self, result):
 Quando você especifica `emit`, o decorador se torna um roteador. O feedback livre do humano é interpretado por um LLM e mapeado para um dos outcomes especificados:
 
 ```python Code
-@start()
-@human_feedback(
-    message="Você aprova este conteúdo para publicação?",
-    emit=["approved", "rejected", "needs_revision"],
-    llm="gpt-4o-mini",
-    default_outcome="needs_revision",
-)
-def review_content(self):
-    return "Rascunho do post do blog aqui..."
+from crewai.flow.flow import Flow, start, listen, or_
+from crewai.flow.human_feedback import human_feedback
 
-@listen("approved")
-def publish(self, result):
-    print(f"Publicando! Usuário disse: {result.feedback}")
+class ReviewFlow(Flow):
+    @start()
+    def generate_content(self):
+        return "Rascunho do post do blog aqui..."
 
-@listen("rejected")
-def discard(self, result):
-    print(f"Descartando. Motivo: {result.feedback}")
+    @human_feedback(
+        message="Você aprova este conteúdo para publicação?",
+        emit=["approved", "rejected", "needs_revision"],
+        llm="gpt-4o-mini",
+        default_outcome="needs_revision",
+    )
+    @listen(or_("generate_content", "needs_revision"))
+    def review_content(self):
+        return "Rascunho do post do blog aqui..."
 
-@listen("needs_revision")
-def revise(self, result):
-    print(f"Revisando baseado em: {result.feedback}")
+    @listen("approved")
+    def publish(self, result):
+        print(f"Publicando! Usuário disse: {result.feedback}")
+
+    @listen("rejected")
+    def discard(self, result):
+        print(f"Descartando. Motivo: {result.feedback}")
 ```
 
+Quando o humano diz algo como "precisa de mais detalhes", o LLM mapeia para `"needs_revision"`, que dispara `review_content` novamente via `or_()` — criando um loop de revisão. O loop continua até que o outcome seja `"approved"` ou `"rejected"`.
+
 <Tip>
 O LLM usa saídas estruturadas (function calling) quando disponível para garantir que a resposta seja um dos seus outcomes especificados. Isso torna o roteamento confiável e previsível.
 </Tip>
 
+<Warning>
+Um método `@start()` só executa uma vez no início do flow. Se você precisa de um loop de revisão, separe o método start do método de revisão e use `@listen(or_("trigger", "revision_outcome"))` no método de revisão para habilitar o self-loop.
+</Warning>
+
 ## HumanFeedbackResult
 
 O dataclass `HumanFeedbackResult` contém todas as informações sobre uma interação de feedback humano:
@@ -193,116 +203,162 @@ Aqui está um exemplo completo implementando um fluxo de revisão e aprovação
 <CodeGroup>
 
 ```python Code
-from crewai.flow.flow import Flow, start, listen
+from crewai.flow.flow import Flow, start, listen, or_
 from crewai.flow.human_feedback import human_feedback, HumanFeedbackResult
 from pydantic import BaseModel
 
 
 class ContentState(BaseModel):
-    topic: str = ""
     draft: str = ""
-    final_content: str = ""
     revision_count: int = 0
+    status: str = "pending"
 
 
 class ContentApprovalFlow(Flow[ContentState]):
-    """Um flow que gera conteúdo e obtém aprovação humana."""
+    """Um flow que gera conteúdo e faz loop até o humano aprovar."""
 
     @start()
-    def get_topic(self):
-        self.state.topic = input("Sobre qual tópico devo escrever? ")
-        return self.state.topic
-
-    @listen(get_topic)
-    def generate_draft(self, topic):
-        # Em uso real, isso chamaria um LLM
-        self.state.draft = f"# {topic}\n\nEste é um rascunho sobre {topic}..."
+    def generate_draft(self):
+        self.state.draft = "# IA Segura\n\nEste é um rascunho sobre IA Segura..."
         return self.state.draft
 
-    @listen(generate_draft)
     @human_feedback(
-        message="Por favor, revise este rascunho. Responda 'approved', 'rejected', ou forneça feedback de revisão:",
+        message="Por favor, revise este rascunho. Aprove, rejeite ou descreva o que precisa mudar:",
         emit=["approved", "rejected", "needs_revision"],
         llm="gpt-4o-mini",
         default_outcome="needs_revision",
     )
-    def review_draft(self, draft):
-        return draft
+    @listen(or_("generate_draft", "needs_revision"))
+    def review_draft(self):
+        self.state.revision_count += 1
+        return f"{self.state.draft} (v{self.state.revision_count})"
 
     @listen("approved")
     def publish_content(self, result: HumanFeedbackResult):
-        self.state.final_content = result.output
-        print("\n✅ Conteúdo aprovado e publicado!")
-        print(f"Comentário do revisor: {result.feedback}")
+        self.state.status = "published"
+        print(f"Conteúdo aprovado e publicado! Revisor disse: {result.feedback}")
         return "published"
 
     @listen("rejected")
     def handle_rejection(self, result: HumanFeedbackResult):
-        print("\n❌ Conteúdo rejeitado")
-        print(f"Motivo: {result.feedback}")
+        self.state.status = "rejected"
+        print(f"Conteúdo rejeitado. Motivo: {result.feedback}")
         return "rejected"
 
-    @listen("needs_revision")
-    def revise_content(self, result: HumanFeedbackResult):
-        self.state.revision_count += 1
-        print(f"\n📝 Revisão #{self.state.revision_count} solicitada")
-        print(f"Feedback: {result.feedback}")
 
-        # Em um flow real, você pode voltar para generate_draft
-        # Para este exemplo, apenas reconhecemos
-        return "revision_requested"
-
-
-# Executar o flow
 flow = ContentApprovalFlow()
 result = flow.kickoff()
-print(f"\nFlow concluído. Revisões solicitadas: {flow.state.revision_count}")
+print(f"\nFlow finalizado. Status: {flow.state.status}, Revisões: {flow.state.revision_count}")
 ```
 
 ```text Output
-Sobre qual tópico devo escrever? Segurança em IA
+==================================================
+OUTPUT FOR REVIEW:
+==================================================
+# IA Segura
+
+Este é um rascunho sobre IA Segura... (v1)
+==================================================
+
+Por favor, revise este rascunho. Aprove, rejeite ou descreva o que precisa mudar:
+(Press Enter to skip, or type your feedback)
+
+Your feedback: Preciso de mais detalhes sobre segurança em IA.
 
 ==================================================
 OUTPUT FOR REVIEW:
 ==================================================
-# Segurança em IA
+# IA Segura
 
-Este é um rascunho sobre Segurança em IA...
+Este é um rascunho sobre IA Segura... (v2)
 ==================================================
 
-Por favor, revise este rascunho. Responda 'approved', 'rejected', ou forneça feedback de revisão:
+Por favor, revise este rascunho. Aprove, rejeite ou descreva o que precisa mudar:
 (Press Enter to skip, or type your feedback)
 
 Your feedback: Parece bom, aprovado!
 
-✅ Conteúdo aprovado e publicado!
-Comentário do revisor: Parece bom, aprovado!
+Conteúdo aprovado e publicado! Revisor disse: Parece bom, aprovado!
 
-Flow concluído. Revisões solicitadas: 0
+Flow finalizado. Status: published, Revisões: 2
 ```
 
 </CodeGroup>
 
 ## Combinando com Outros Decoradores
 
-O decorador `@human_feedback` funciona com outros decoradores de flow. Coloque-o como o decorador mais interno (mais próximo da função):
+O decorador `@human_feedback` funciona com `@start()`, `@listen()` e `or_()`. Ambas as ordens de decoradores funcionam — o framework propaga atributos em ambas as direções — mas os padrões recomendados são:
 
 ```python Code
-# Correto: @human_feedback é o mais interno (mais próximo da função)
+# Revisão única no início do flow (sem self-loop)
 @start()
-@human_feedback(message="Revise isto:")
+@human_feedback(message="Revise isto:", emit=["approved", "rejected"], llm="gpt-4o-mini")
 def my_start_method(self):
     return "content"
 
+# Revisão linear em um listener (sem self-loop)
 @listen(other_method)
-@human_feedback(message="Revise isto também:")
+@human_feedback(message="Revise isto também:", emit=["good", "bad"], llm="gpt-4o-mini")
 def my_listener(self, data):
     return f"processed: {data}"
+
+# Self-loop: revisão que pode voltar para revisões
+@human_feedback(message="Aprovar ou revisar?", emit=["approved", "revise"], llm="gpt-4o-mini")
+@listen(or_("upstream_method", "revise"))
+def review_with_loop(self):
+    return "content for review"
 ```
 
-<Tip>
-Coloque `@human_feedback` como o decorador mais interno (último/mais próximo da função) para que ele envolva o método diretamente e possa capturar o valor de retorno antes de passar para o sistema de flow.
-</Tip>
+### Padrão de self-loop
+
+Para criar um loop de revisão, o método de revisão deve escutar **ambos** um gatilho upstream e seu próprio outcome de revisão usando `or_()`:
+
+```python Code
+@start()
+def generate(self):
+    return "initial draft"
+
+@human_feedback(
+    message="Aprovar ou solicitar alterações?",
+    emit=["revise", "approved"],
+    llm="gpt-4o-mini",
+    default_outcome="approved",
+)
+@listen(or_("generate", "revise"))
+def review(self):
+    return "content"
+
+@listen("approved")
+def publish(self):
+    return "published"
+```
+
+Quando o outcome é `"revise"`, o flow roteia de volta para `review` (porque ele escuta `"revise"` via `or_()`). Quando o outcome é `"approved"`, o flow continua para `publish`. Isso funciona porque o engine de flow isenta roteadores da regra "fire once", permitindo que eles re-executem em cada iteração do loop.
+
+### Roteadores encadeados
+
+Um listener disparado pelo outcome de um roteador pode ser ele mesmo um roteador:
+
+```python Code
+@start()
+@human_feedback(message="Primeira revisão:", emit=["approved", "rejected"], llm="gpt-4o-mini")
+def draft(self):
+    return "draft content"
+
+@listen("approved")
+@human_feedback(message="Revisão final:", emit=["publish", "revise"], llm="gpt-4o-mini")
+def final_review(self, prev):
+    return "final content"
+
+@listen("publish")
+def on_publish(self, prev):
+    return "published"
+```
+
+### Limitações
+
+- **Métodos `@start()` executam uma vez**: Um método `@start()` não pode fazer self-loop. Se você precisa de um ciclo de revisão, use um método `@start()` separado como ponto de entrada e coloque o `@human_feedback` em um método `@listen()`.
+- **Sem `@start()` + `@listen()` no mesmo método**: Esta é uma restrição do framework de Flow. Um método é ou um ponto de início ou um listener, não ambos.
 
 ## Melhores Práticas
 
@@ -516,9 +572,9 @@ class ContentPipeline(Flow):
     @start()
     @human_feedback(
         message="Aprova este conteúdo para publicação?",
-        emit=["approved", "rejected", "needs_revision"],
+        emit=["approved", "rejected"],
         llm="gpt-4o-mini",
-        default_outcome="needs_revision",
+        default_outcome="rejected",
         provider=SlackNotificationProvider("#content-reviews"),
     )
     def generate_content(self):
@@ -534,11 +590,6 @@ class ContentPipeline(Flow):
         print(f"Arquivado. Motivo: {result.feedback}")
         return {"status": "archived"}
 
-    @listen("needs_revision")
-    def queue_revision(self, result):
-        print(f"Na fila para revisão: {result.feedback}")
-        return {"status": "revision_needed"}
-
 
 # Iniciando o flow (vai pausar e aguardar resposta do Slack)
 def start_content_pipeline():
@@ -594,22 +645,22 @@ Com o tempo, o humano vê saídas pré-revisadas progressivamente melhores porqu
 ```python Code
 class ArticleReviewFlow(Flow):
     @start()
+    def generate_article(self):
+        return self.crew.kickoff(inputs={"topic": "AI Safety"}).raw
+
     @human_feedback(
-        message="Review this article draft:",
+        message="Revise este rascunho do artigo:",
         emit=["approved", "needs_revision"],
         llm="gpt-4o-mini",
         learn=True,  # enable HITL learning
     )
-    def generate_article(self):
-        return self.crew.kickoff(inputs={"topic": "AI Safety"}).raw
+    @listen(or_("generate_article", "needs_revision"))
+    def review_article(self):
+        return self.last_human_feedback.output if self.last_human_feedback else "article draft"
 
     @listen("approved")
     def publish(self):
         print(f"Publishing: {self.last_human_feedback.output}")
-
-    @listen("needs_revision")
-    def revise(self):
-        print("Revising based on feedback...")
 ```
 
 **Primeira execução**: O humano vê a saída bruta e diz "Sempre inclua citações para afirmações factuais." A lição é destilada e armazenada na memória.

lib/crewai/pyproject.toml

@@ -38,6 +38,7 @@ dependencies = [
     "json5~=0.10.0",
     "portalocker~=2.7.0",
     "pydantic-settings~=2.10.1",
+    "httpx~=0.28.1",
     "mcp~=1.26.0",
     "uv~=0.9.13",
     "aiosqlite~=0.21.0",

lib/crewai/src/crewai/agent/core.py

@@ -864,7 +864,11 @@ class Agent(BaseAgent):
                 respect_context_window=self.respect_context_window,
                 request_within_rpm_limit=rpm_limit_fn,
                 callbacks=[TokenCalcHandler(self._token_process)],
-                response_model=task.response_model if task else None,
+                response_model=(
+                    task.response_model or task.output_pydantic or task.output_json
+                )
+                if task
+                else None,
             )
 
     def _update_executor_parameters(
@@ -893,7 +897,11 @@ class Agent(BaseAgent):
         self.agent_executor.stop = stop_words
         self.agent_executor.tools_names = get_tool_names(tools)
         self.agent_executor.tools_description = render_text_description_and_args(tools)
-        self.agent_executor.response_model = task.response_model if task else None
+        self.agent_executor.response_model = (
+            (task.response_model or task.output_pydantic or task.output_json)
+            if task
+            else None
+        )
 
         self.agent_executor.tools_handler = self.tools_handler
         self.agent_executor.request_within_rpm_limit = rpm_limit_fn
@@ -1712,7 +1720,8 @@ class Agent(BaseAgent):
 
             existing_names = {sanitize_tool_name(t.name) for t in raw_tools}
             raw_tools.extend(
-                mt for mt in create_memory_tools(agent_memory)
+                mt
+                for mt in create_memory_tools(agent_memory)
                 if sanitize_tool_name(mt.name) not in existing_names
             )
 
@@ -1937,14 +1946,15 @@ class Agent(BaseAgent):
             if isinstance(messages, str):
                 input_str = messages
             else:
-                input_str = "\n".join(
-                    str(msg.get("content", "")) for msg in messages if msg.get("content")
-                ) or "User request"
-            raw = (
-                f"Input: {input_str}\n"
-                f"Agent: {self.role}\n"
-                f"Result: {output_text}"
-            )
+                input_str = (
+                    "\n".join(
+                        str(msg.get("content", ""))
+                        for msg in messages
+                        if msg.get("content")
+                    )
+                    or "User request"
+                )
+            raw = f"Input: {input_str}\nAgent: {self.role}\nResult: {output_text}"
             extracted = agent_memory.extract_memories(raw)
             if extracted:
                 agent_memory.remember_many(extracted)

lib/crewai/src/crewai/agents/crew_agent_executor.py

@@ -6,7 +6,10 @@ and memory management.
 
 from __future__ import annotations
 
+import asyncio
 from collections.abc import Callable
+from concurrent.futures import ThreadPoolExecutor, as_completed
+import inspect
 import logging
 from typing import TYPE_CHECKING, Any, Literal, cast
 
@@ -47,6 +50,7 @@ from crewai.utilities.agent_utils import (
     handle_unknown_error,
     has_reached_max_iterations,
     is_context_length_exceeded,
+    parse_tool_call_args,
     process_llm_response,
     track_delegation_if_needed,
 )
@@ -685,30 +689,142 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
         Returns:
             AgentFinish if tool has result_as_answer=True, None otherwise.
         """
-        from datetime import datetime
-        import json
-
-        from crewai.events import crewai_event_bus
-        from crewai.events.types.tool_usage_events import (
-            ToolUsageErrorEvent,
-            ToolUsageFinishedEvent,
-            ToolUsageStartedEvent,
-        )
-
         if not tool_calls:
             return None
 
-        # Only process the FIRST tool call for sequential execution with reflection
-        tool_call = tool_calls[0]
+        parsed_calls = [
+            parsed
+            for tool_call in tool_calls
+            if (parsed := self._parse_native_tool_call(tool_call)) is not None
+        ]
+        if not parsed_calls:
+            return None
 
-        # Extract tool call info - handle OpenAI-style, Anthropic-style, and Gemini-style
+        original_tools_by_name: dict[str, Any] = {}
+        for tool in self.original_tools or []:
+            original_tools_by_name[sanitize_tool_name(tool.name)] = tool
+
+        if len(parsed_calls) > 1:
+            has_result_as_answer_in_batch = any(
+                bool(
+                    original_tools_by_name.get(func_name)
+                    and getattr(
+                        original_tools_by_name.get(func_name), "result_as_answer", False
+                    )
+                )
+                for _, func_name, _ in parsed_calls
+            )
+            has_max_usage_count_in_batch = any(
+                bool(
+                    original_tools_by_name.get(func_name)
+                    and getattr(
+                        original_tools_by_name.get(func_name),
+                        "max_usage_count",
+                        None,
+                    )
+                    is not None
+                )
+                for _, func_name, _ in parsed_calls
+            )
+
+            # Preserve historical sequential behavior for result_as_answer batches.
+            # Also avoid threading around usage counters for max_usage_count tools.
+            if has_result_as_answer_in_batch or has_max_usage_count_in_batch:
+                logger.debug(
+                    "Skipping parallel native execution because batch includes result_as_answer or max_usage_count tool"
+                )
+            else:
+                execution_plan: list[
+                    tuple[str, str, str | dict[str, Any], Any | None]
+                ] = []
+                for call_id, func_name, func_args in parsed_calls:
+                    original_tool = original_tools_by_name.get(func_name)
+                    execution_plan.append(
+                        (call_id, func_name, func_args, original_tool)
+                    )
+
+                self._append_assistant_tool_calls_message(
+                    [
+                        (call_id, func_name, func_args)
+                        for call_id, func_name, func_args, _ in execution_plan
+                    ]
+                )
+
+                max_workers = min(8, len(execution_plan))
+                ordered_results: list[dict[str, Any] | None] = [None] * len(
+                    execution_plan
+                )
+                with ThreadPoolExecutor(max_workers=max_workers) as pool:
+                    futures = {
+                        pool.submit(
+                            self._execute_single_native_tool_call,
+                            call_id=call_id,
+                            func_name=func_name,
+                            func_args=func_args,
+                            available_functions=available_functions,
+                            original_tool=original_tool,
+                            should_execute=True,
+                        ): idx
+                        for idx, (
+                            call_id,
+                            func_name,
+                            func_args,
+                            original_tool,
+                        ) in enumerate(execution_plan)
+                    }
+                    for future in as_completed(futures):
+                        idx = futures[future]
+                        ordered_results[idx] = future.result()
+
+                for execution_result in ordered_results:
+                    if not execution_result:
+                        continue
+                    tool_finish = self._append_tool_result_and_check_finality(
+                        execution_result
+                    )
+                    if tool_finish:
+                        return tool_finish
+
+                reasoning_prompt = self._i18n.slice("post_tool_reasoning")
+                reasoning_message: LLMMessage = {
+                    "role": "user",
+                    "content": reasoning_prompt,
+                }
+                self.messages.append(reasoning_message)
+                return None
+
+        # Sequential behavior: process only first tool call, then force reflection.
+        call_id, func_name, func_args = parsed_calls[0]
+        self._append_assistant_tool_calls_message([(call_id, func_name, func_args)])
+
+        execution_result = self._execute_single_native_tool_call(
+            call_id=call_id,
+            func_name=func_name,
+            func_args=func_args,
+            available_functions=available_functions,
+            original_tool=original_tools_by_name.get(func_name),
+            should_execute=True,
+        )
+        tool_finish = self._append_tool_result_and_check_finality(execution_result)
+        if tool_finish:
+            return tool_finish
+
+        reasoning_prompt = self._i18n.slice("post_tool_reasoning")
+        reasoning_message = {
+            "role": "user",
+            "content": reasoning_prompt,
+        }
+        self.messages.append(reasoning_message)
+        return None
+
+    def _parse_native_tool_call(
+        self, tool_call: Any
+    ) -> tuple[str, str, str | dict[str, Any]] | None:
         if hasattr(tool_call, "function"):
-            # OpenAI-style: has .function.name and .function.arguments
             call_id = getattr(tool_call, "id", f"call_{id(tool_call)}")
             func_name = sanitize_tool_name(tool_call.function.name)
-            func_args = tool_call.function.arguments
-        elif hasattr(tool_call, "function_call") and tool_call.function_call:
-            # Gemini-style: has .function_call.name and .function_call.args
+            return call_id, func_name, tool_call.function.arguments
+        if hasattr(tool_call, "function_call") and tool_call.function_call:
             call_id = f"call_{id(tool_call)}"
             func_name = sanitize_tool_name(tool_call.function_call.name)
             func_args = (
@@ -716,13 +832,12 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
                 if tool_call.function_call.args
                 else {}
             )
-        elif hasattr(tool_call, "name") and hasattr(tool_call, "input"):
-            # Anthropic format: has .name and .input (ToolUseBlock)
+            return call_id, func_name, func_args
+        if hasattr(tool_call, "name") and hasattr(tool_call, "input"):
             call_id = getattr(tool_call, "id", f"call_{id(tool_call)}")
             func_name = sanitize_tool_name(tool_call.name)
-            func_args = tool_call.input  # Already a dict in Anthropic
-        elif isinstance(tool_call, dict):
-            # Support OpenAI "id", Bedrock "toolUseId", or generate one
+            return call_id, func_name, tool_call.input
+        if isinstance(tool_call, dict):
             call_id = (
                 tool_call.get("id")
                 or tool_call.get("toolUseId")
@@ -733,10 +848,15 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
                 func_info.get("name", "") or tool_call.get("name", "")
             )
             func_args = func_info.get("arguments", "{}") or tool_call.get("input", {})
-        else:
-            return None
+            return call_id, func_name, func_args
+        return None
+
+    def _append_assistant_tool_calls_message(
+        self,
+        parsed_calls: list[tuple[str, str, str | dict[str, Any]]],
+    ) -> None:
+        import json
 
-        # Append assistant message with single tool call
         assistant_message: LLMMessage = {
             "role": "assistant",
             "content": None,
@@ -751,42 +871,54 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
                         else json.dumps(func_args),
                     },
                 }
+                for call_id, func_name, func_args in parsed_calls
             ],
         }
-
         self.messages.append(assistant_message)
 
-        # Parse arguments for the single tool call
-        if isinstance(func_args, str):
-            try:
-                args_dict = json.loads(func_args)
-            except json.JSONDecodeError:
-                args_dict = {}
-        else:
-            args_dict = func_args
+    def _execute_single_native_tool_call(
+        self,
+        *,
+        call_id: str,
+        func_name: str,
+        func_args: str | dict[str, Any],
+        available_functions: dict[str, Callable[..., Any]],
+        original_tool: Any | None = None,
+        should_execute: bool = True,
+    ) -> dict[str, Any]:
+        from datetime import datetime
+        import json
 
-        agent_key = getattr(self.agent, "key", "unknown") if self.agent else "unknown"
+        from crewai.events.types.tool_usage_events import (
+            ToolUsageErrorEvent,
+            ToolUsageFinishedEvent,
+            ToolUsageStartedEvent,
+        )
 
-        # Find original tool by matching sanitized name (needed for cache_function and result_as_answer)
+        args_dict, parse_error = parse_tool_call_args(func_args, func_name, call_id, original_tool)
+        if parse_error is not None:
+            return parse_error
 
-        original_tool = None
-        for tool in self.original_tools or []:
-            if sanitize_tool_name(tool.name) == func_name:
-                original_tool = tool
-                break
+        if original_tool is None:
+            for tool in self.original_tools or []:
+                if sanitize_tool_name(tool.name) == func_name:
+                    original_tool = tool
+                    break
 
-        # Check if tool has reached max usage count
         max_usage_reached = False
-        if original_tool:
-            if (
-                hasattr(original_tool, "max_usage_count")
-                and original_tool.max_usage_count is not None
-                and original_tool.current_usage_count >= original_tool.max_usage_count
-            ):
-                max_usage_reached = True
+        if not should_execute and original_tool:
+            max_usage_reached = True
+        elif (
+            should_execute
+            and original_tool
+            and (max_count := getattr(original_tool, "max_usage_count", None))
+            is not None
+            and getattr(original_tool, "current_usage_count", 0) >= max_count
+        ):
+            max_usage_reached = True
 
-        # Check cache before executing
         from_cache = False
+        result: str = "Tool not found"
         input_str = json.dumps(args_dict) if args_dict else ""
         if self.tools_handler and self.tools_handler.cache:
             cached_result = self.tools_handler.cache.read(
@@ -800,7 +932,7 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
                 )
                 from_cache = True
 
-        # Emit tool usage started event
+        agent_key = getattr(self.agent, "key", "unknown") if self.agent else "unknown"
         started_at = datetime.now()
         crewai_event_bus.emit(
             self,
@@ -816,14 +948,12 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
 
         track_delegation_if_needed(func_name, args_dict, self.task)
 
-        # Find the structured tool for hook context
         structured_tool: CrewStructuredTool | None = None
         for structured in self.tools or []:
             if sanitize_tool_name(structured.name) == func_name:
                 structured_tool = structured
                 break
 
-        # Execute before_tool_call hooks
         hook_blocked = False
         before_hook_context = ToolCallHookContext(
             tool_name=func_name,
@@ -847,58 +977,48 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
                     color="red",
                 )
 
-        # If hook blocked execution, set result and skip tool execution
         if hook_blocked:
             result = f"Tool execution blocked by hook. Tool: {func_name}"
-        # Execute the tool (only if not cached, not at max usage, and not blocked by hook)
-        elif not from_cache and not max_usage_reached:
-            result = "Tool not found"
-            if func_name in available_functions:
-                try:
-                    tool_func = available_functions[func_name]
-                    raw_result = tool_func(**args_dict)
-
-                    # Add to cache after successful execution (before string conversion)
-                    if self.tools_handler and self.tools_handler.cache:
-                        should_cache = True
-                        if (
-                            original_tool
-                            and hasattr(original_tool, "cache_function")
-                            and callable(original_tool.cache_function)
-                        ):
-                            should_cache = original_tool.cache_function(
-                                args_dict, raw_result
-                            )
-                        if should_cache:
-                            self.tools_handler.cache.add(
-                                tool=func_name, input=input_str, output=raw_result
-                            )
-
-                    # Convert to string for message
-                    result = (
-                        str(raw_result)
-                        if not isinstance(raw_result, str)
-                        else raw_result
-                    )
-                except Exception as e:
-                    result = f"Error executing tool: {e}"
-                    if self.task:
-                        self.task.increment_tools_errors()
-                    crewai_event_bus.emit(
-                        self,
-                        event=ToolUsageErrorEvent(
-                            tool_name=func_name,
-                            tool_args=args_dict,
-                            from_agent=self.agent,
-                            from_task=self.task,
-                            agent_key=agent_key,
-                            error=e,
-                        ),
-                    )
-                    error_event_emitted = True
         elif max_usage_reached and original_tool:
-            # Return error message when max usage limit is reached
             result = f"Tool '{func_name}' has reached its usage limit of {original_tool.max_usage_count} times and cannot be used anymore."
+        elif not from_cache and func_name in available_functions:
+            try:
+                raw_result = available_functions[func_name](**args_dict)
+
+                if self.tools_handler and self.tools_handler.cache:
+                    should_cache = True
+                    if (
+                        original_tool
+                        and hasattr(original_tool, "cache_function")
+                        and callable(original_tool.cache_function)
+                    ):
+                        should_cache = original_tool.cache_function(
+                            args_dict, raw_result
+                        )
+                    if should_cache:
+                        self.tools_handler.cache.add(
+                            tool=func_name, input=input_str, output=raw_result
+                        )
+
+                result = (
+                    str(raw_result) if not isinstance(raw_result, str) else raw_result
+                )
+            except Exception as e:
+                result = f"Error executing tool: {e}"
+                if self.task:
+                    self.task.increment_tools_errors()
+                crewai_event_bus.emit(
+                    self,
+                    event=ToolUsageErrorEvent(
+                        tool_name=func_name,
+                        tool_args=args_dict,
+                        from_agent=self.agent,
+                        from_task=self.task,
+                        agent_key=agent_key,
+                        error=e,
+                    ),
+                )
+                error_event_emitted = True
 
         after_hook_context = ToolCallHookContext(
             tool_name=func_name,
@@ -938,7 +1058,23 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
                 ),
             )
 
-        # Append tool result message
+        return {
+            "call_id": call_id,
+            "func_name": func_name,
+            "result": result,
+            "from_cache": from_cache,
+            "original_tool": original_tool,
+        }
+
+    def _append_tool_result_and_check_finality(
+        self, execution_result: dict[str, Any]
+    ) -> AgentFinish | None:
+        call_id = cast(str, execution_result["call_id"])
+        func_name = cast(str, execution_result["func_name"])
+        result = cast(str, execution_result["result"])
+        from_cache = cast(bool, execution_result["from_cache"])
+        original_tool = execution_result["original_tool"]
+
         tool_message: LLMMessage = {
             "role": "tool",
             "tool_call_id": call_id,
@@ -947,7 +1083,6 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
         }
         self.messages.append(tool_message)
 
-        # Log the tool execution
         if self.agent and self.agent.verbose:
             cache_info = " (from cache)" if from_cache else ""
             self._printer.print(
@@ -960,20 +1095,11 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
             and hasattr(original_tool, "result_as_answer")
             and original_tool.result_as_answer
         ):
-            # Return immediately with tool result as final answer
             return AgentFinish(
                 thought="Tool result is the final answer",
                 output=result,
                 text=result,
             )
-
-        # Inject post-tool reasoning prompt to enforce analysis
-        reasoning_prompt = self._i18n.slice("post_tool_reasoning")
-        reasoning_message: LLMMessage = {
-            "role": "user",
-            "content": reasoning_prompt,
-        }
-        self.messages.append(reasoning_message)
         return None
 
     async def ainvoke(self, inputs: dict[str, Any]) -> dict[str, Any]:
@@ -1371,7 +1497,9 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
             formatted_answer: Current agent response.
         """
         if self.step_callback:
-            self.step_callback(formatted_answer)
+            cb_result = self.step_callback(formatted_answer)
+            if inspect.iscoroutine(cb_result):
+                asyncio.run(cb_result)
 
     def _append_message(
         self, text: str, role: Literal["user", "assistant", "system"] = "assistant"

lib/crewai/src/crewai/cli/authentication/main.py

@@ -2,8 +2,8 @@ import time
 from typing import TYPE_CHECKING, Any, TypeVar, cast
 import webbrowser
 
+import httpx
 from pydantic import BaseModel, Field
-import requests
 from rich.console import Console
 
 from crewai.cli.authentication.utils import validate_jwt_token
@@ -98,7 +98,7 @@ class AuthenticationCommand:
             "scope": " ".join(self.oauth2_provider.get_oauth_scopes()),
             "audience": self.oauth2_provider.get_audience(),
         }
-        response = requests.post(
+        response = httpx.post(
             url=self.oauth2_provider.get_authorize_url(),
             data=device_code_payload,
             timeout=20,
@@ -130,7 +130,7 @@ class AuthenticationCommand:
 
         attempts = 0
         while True and attempts < 10:
-            response = requests.post(
+            response = httpx.post(
                 self.oauth2_provider.get_token_url(), data=token_payload, timeout=30
             )
             token_data = response.json()
@@ -149,7 +149,7 @@ class AuthenticationCommand:
                 return
 
             if token_data["error"] not in ("authorization_pending", "slow_down"):
-                raise requests.HTTPError(
+                raise httpx.HTTPError(
                     token_data.get("error_description") or token_data.get("error")
                 )
 

lib/crewai/src/crewai/cli/command.py

@@ -1,5 +1,6 @@
-import requests
-from requests.exceptions import JSONDecodeError
+import json
+
+import httpx
 from rich.console import Console
 
 from crewai.cli.authentication.token import get_auth_token
@@ -30,16 +31,16 @@ class PlusAPIMixin:
             console.print("Run 'crewai login' to sign up/login.", style="bold green")
             raise SystemExit from None
 
-    def _validate_response(self, response: requests.Response) -> None:
+    def _validate_response(self, response: httpx.Response) -> None:
         """
         Handle and display error messages from API responses.
 
         Args:
-            response (requests.Response): The response from the Plus API
+            response (httpx.Response): The response from the Plus API
         """
         try:
             json_response = response.json()
-        except (JSONDecodeError, ValueError):
+        except (json.JSONDecodeError, ValueError):
             console.print(
                 "Failed to parse response from Enterprise API failed. Details:",
                 style="bold red",
@@ -62,7 +63,7 @@ class PlusAPIMixin:
                     )
             raise SystemExit
 
-        if not response.ok:
+        if not response.is_success:
             console.print(
                 "Request to Enterprise API failed. Details:", style="bold red"
             )

lib/crewai/src/crewai/cli/constants.py

@@ -69,7 +69,7 @@ ENV_VARS: dict[str, list[dict[str, Any]]] = {
         },
         {
             "prompt": "Enter your AWS Region Name (press Enter to skip)",
-            "key_name": "AWS_REGION_NAME",
+            "key_name": "AWS_DEFAULT_REGION",
         },
     ],
     "azure": [

lib/crewai/src/crewai/cli/enterprise/main.py

@@ -1,7 +1,7 @@
+import json
 from typing import Any, cast
 
-import requests
-from requests.exceptions import JSONDecodeError, RequestException
+import httpx
 from rich.console import Console
 
 from crewai.cli.authentication.main import Oauth2Settings, ProviderFactory
@@ -47,12 +47,12 @@ class EnterpriseConfigureCommand(BaseCommand):
                 "User-Agent": f"CrewAI-CLI/{get_crewai_version()}",
                 "X-Crewai-Version": get_crewai_version(),
             }
-            response = requests.get(oauth_endpoint, timeout=30, headers=headers)
+            response = httpx.get(oauth_endpoint, timeout=30, headers=headers)
             response.raise_for_status()
 
             try:
                 oauth_config = response.json()
-            except JSONDecodeError as e:
+            except json.JSONDecodeError as e:
                 raise ValueError(f"Invalid JSON response from {oauth_endpoint}") from e
 
             self._validate_oauth_config(oauth_config)
@@ -62,7 +62,7 @@ class EnterpriseConfigureCommand(BaseCommand):
             )
             return cast(dict[str, Any], oauth_config)
 
-        except RequestException as e:
+        except httpx.HTTPError as e:
             raise ValueError(f"Failed to connect to enterprise URL: {e!s}") from e
         except Exception as e:
             raise ValueError(f"Error fetching OAuth2 configuration: {e!s}") from e

lib/crewai/src/crewai/cli/organization/main.py

@@ -1,4 +1,4 @@
-from requests import HTTPError
+from httpx import HTTPStatusError
 from rich.console import Console
 from rich.table import Table
 
@@ -10,11 +10,11 @@ console = Console()
 
 
 class OrganizationCommand(BaseCommand, PlusAPIMixin):
-    def __init__(self):
+    def __init__(self) -> None:
         BaseCommand.__init__(self)
         PlusAPIMixin.__init__(self, telemetry=self._telemetry)
 
-    def list(self):
+    def list(self) -> None:
         try:
             response = self.plus_api_client.get_organizations()
             response.raise_for_status()
@@ -33,7 +33,7 @@ class OrganizationCommand(BaseCommand, PlusAPIMixin):
                 table.add_row(org["name"], org["uuid"])
 
             console.print(table)
-        except HTTPError as e:
+        except HTTPStatusError as e:
             if e.response.status_code == 401:
                 console.print(
                     "You are not logged in to any organization. Use 'crewai login' to login.",
@@ -50,7 +50,7 @@ class OrganizationCommand(BaseCommand, PlusAPIMixin):
             )
             raise SystemExit(1) from e
 
-    def switch(self, org_id):
+    def switch(self, org_id: str) -> None:
         try:
             response = self.plus_api_client.get_organizations()
             response.raise_for_status()
@@ -72,7 +72,7 @@ class OrganizationCommand(BaseCommand, PlusAPIMixin):
                 f"Successfully switched to {org['name']} ({org['uuid']})",
                 style="bold green",
             )
-        except HTTPError as e:
+        except HTTPStatusError as e:
             if e.response.status_code == 401:
                 console.print(
                     "You are not logged in to any organization. Use 'crewai login' to login.",
@@ -87,7 +87,7 @@ class OrganizationCommand(BaseCommand, PlusAPIMixin):
             console.print(f"Failed to switch organization: {e!s}", style="bold red")
             raise SystemExit(1) from e
 
-    def current(self):
+    def current(self) -> None:
         settings = Settings()
         if settings.org_uuid:
             console.print(

lib/crewai/src/crewai/cli/plus_api.py

@@ -3,7 +3,6 @@ from typing import Any
 from urllib.parse import urljoin
 
 import httpx
-import requests
 
 from crewai.cli.config import Settings
 from crewai.cli.constants import DEFAULT_CREWAI_ENTERPRISE_URL
@@ -43,16 +42,16 @@ class PlusAPI:
 
     def _make_request(
         self, method: str, endpoint: str, **kwargs: Any
-    ) -> requests.Response:
+    ) -> httpx.Response:
         url = urljoin(self.base_url, endpoint)
-        session = requests.Session()
-        session.trust_env = False
-        return session.request(method, url, headers=self.headers, **kwargs)
+        verify = kwargs.pop("verify", True)
+        with httpx.Client(trust_env=False, verify=verify) as client:
+            return client.request(method, url, headers=self.headers, **kwargs)
 
-    def login_to_tool_repository(self) -> requests.Response:
+    def login_to_tool_repository(self) -> httpx.Response:
         return self._make_request("POST", f"{self.TOOLS_RESOURCE}/login")
 
-    def get_tool(self, handle: str) -> requests.Response:
+    def get_tool(self, handle: str) -> httpx.Response:
         return self._make_request("GET", f"{self.TOOLS_RESOURCE}/{handle}")
 
     async def get_agent(self, handle: str) -> httpx.Response:
@@ -68,7 +67,7 @@ class PlusAPI:
         description: str | None,
         encoded_file: str,
         available_exports: list[dict[str, Any]] | None = None,
-    ) -> requests.Response:
+    ) -> httpx.Response:
         params = {
             "handle": handle,
             "public": is_public,
@@ -79,54 +78,52 @@ class PlusAPI:
         }
         return self._make_request("POST", f"{self.TOOLS_RESOURCE}", json=params)
 
-    def deploy_by_name(self, project_name: str) -> requests.Response:
+    def deploy_by_name(self, project_name: str) -> httpx.Response:
         return self._make_request(
             "POST", f"{self.CREWS_RESOURCE}/by-name/{project_name}/deploy"
         )
 
-    def deploy_by_uuid(self, uuid: str) -> requests.Response:
+    def deploy_by_uuid(self, uuid: str) -> httpx.Response:
         return self._make_request("POST", f"{self.CREWS_RESOURCE}/{uuid}/deploy")
 
-    def crew_status_by_name(self, project_name: str) -> requests.Response:
+    def crew_status_by_name(self, project_name: str) -> httpx.Response:
         return self._make_request(
             "GET", f"{self.CREWS_RESOURCE}/by-name/{project_name}/status"
         )
 
-    def crew_status_by_uuid(self, uuid: str) -> requests.Response:
+    def crew_status_by_uuid(self, uuid: str) -> httpx.Response:
         return self._make_request("GET", f"{self.CREWS_RESOURCE}/{uuid}/status")
 
     def crew_by_name(
         self, project_name: str, log_type: str = "deployment"
-    ) -> requests.Response:
+    ) -> httpx.Response:
         return self._make_request(
             "GET", f"{self.CREWS_RESOURCE}/by-name/{project_name}/logs/{log_type}"
         )
 
-    def crew_by_uuid(
-        self, uuid: str, log_type: str = "deployment"
-    ) -> requests.Response:
+    def crew_by_uuid(self, uuid: str, log_type: str = "deployment") -> httpx.Response:
         return self._make_request(
             "GET", f"{self.CREWS_RESOURCE}/{uuid}/logs/{log_type}"
         )
 
-    def delete_crew_by_name(self, project_name: str) -> requests.Response:
+    def delete_crew_by_name(self, project_name: str) -> httpx.Response:
         return self._make_request(
             "DELETE", f"{self.CREWS_RESOURCE}/by-name/{project_name}"
         )
 
-    def delete_crew_by_uuid(self, uuid: str) -> requests.Response:
+    def delete_crew_by_uuid(self, uuid: str) -> httpx.Response:
         return self._make_request("DELETE", f"{self.CREWS_RESOURCE}/{uuid}")
 
-    def list_crews(self) -> requests.Response:
+    def list_crews(self) -> httpx.Response:
         return self._make_request("GET", self.CREWS_RESOURCE)
 
-    def create_crew(self, payload: dict[str, Any]) -> requests.Response:
+    def create_crew(self, payload: dict[str, Any]) -> httpx.Response:
         return self._make_request("POST", self.CREWS_RESOURCE, json=payload)
 
-    def get_organizations(self) -> requests.Response:
+    def get_organizations(self) -> httpx.Response:
         return self._make_request("GET", self.ORGANIZATIONS_RESOURCE)
 
-    def initialize_trace_batch(self, payload: dict[str, Any]) -> requests.Response:
+    def initialize_trace_batch(self, payload: dict[str, Any]) -> httpx.Response:
         return self._make_request(
             "POST",
             f"{self.TRACING_RESOURCE}/batches",
@@ -136,7 +133,7 @@ class PlusAPI:
 
     def initialize_ephemeral_trace_batch(
         self, payload: dict[str, Any]
-    ) -> requests.Response:
+    ) -> httpx.Response:
         return self._make_request(
             "POST",
             f"{self.EPHEMERAL_TRACING_RESOURCE}/batches",
@@ -145,7 +142,7 @@ class PlusAPI:
 
     def send_trace_events(
         self, trace_batch_id: str, payload: dict[str, Any]
-    ) -> requests.Response:
+    ) -> httpx.Response:
         return self._make_request(
             "POST",
             f"{self.TRACING_RESOURCE}/batches/{trace_batch_id}/events",
@@ -155,7 +152,7 @@ class PlusAPI:
 
     def send_ephemeral_trace_events(
         self, trace_batch_id: str, payload: dict[str, Any]
-    ) -> requests.Response:
+    ) -> httpx.Response:
         return self._make_request(
             "POST",
             f"{self.EPHEMERAL_TRACING_RESOURCE}/batches/{trace_batch_id}/events",
@@ -165,7 +162,7 @@ class PlusAPI:
 
     def finalize_trace_batch(
         self, trace_batch_id: str, payload: dict[str, Any]
-    ) -> requests.Response:
+    ) -> httpx.Response:
         return self._make_request(
             "PATCH",
             f"{self.TRACING_RESOURCE}/batches/{trace_batch_id}/finalize",
@@ -175,7 +172,7 @@ class PlusAPI:
 
     def finalize_ephemeral_trace_batch(
         self, trace_batch_id: str, payload: dict[str, Any]
-    ) -> requests.Response:
+    ) -> httpx.Response:
         return self._make_request(
             "PATCH",
             f"{self.EPHEMERAL_TRACING_RESOURCE}/batches/{trace_batch_id}/finalize",
@@ -185,7 +182,7 @@ class PlusAPI:
 
     def mark_trace_batch_as_failed(
         self, trace_batch_id: str, error_message: str
-    ) -> requests.Response:
+    ) -> httpx.Response:
         return self._make_request(
             "PATCH",
             f"{self.TRACING_RESOURCE}/batches/{trace_batch_id}",
@@ -193,13 +190,11 @@ class PlusAPI:
             timeout=30,
         )
 
-    def get_triggers(self) -> requests.Response:
+    def get_triggers(self) -> httpx.Response:
         """Get all available triggers from integrations."""
         return self._make_request("GET", f"{self.INTEGRATIONS_RESOURCE}/apps")
 
-    def get_trigger_payload(
-        self, app_slug: str, trigger_slug: str
-    ) -> requests.Response:
+    def get_trigger_payload(self, app_slug: str, trigger_slug: str) -> httpx.Response:
         """Get sample payload for a specific trigger."""
         return self._make_request(
             "GET", f"{self.INTEGRATIONS_RESOURCE}/{app_slug}/{trigger_slug}/payload"

lib/crewai/src/crewai/cli/provider.py

@@ -8,7 +8,7 @@ from typing import Any
 
 import certifi
 import click
-import requests
+import httpx
 
 from crewai.cli.constants import JSON_URL, MODELS, PROVIDERS
 
@@ -165,20 +165,20 @@ def fetch_provider_data(cache_file: Path) -> dict[str, Any] | None:
     ssl_config = os.environ["SSL_CERT_FILE"] = certifi.where()
 
     try:
-        response = requests.get(JSON_URL, stream=True, timeout=60, verify=ssl_config)
-        response.raise_for_status()
-        data = download_data(response)
-        with open(cache_file, "w") as f:
-            json.dump(data, f)
-        return data
-    except requests.RequestException as e:
+        with httpx.stream("GET", JSON_URL, timeout=60, verify=ssl_config) as response:
+            response.raise_for_status()
+            data = download_data(response)
+            with open(cache_file, "w") as f:
+                json.dump(data, f)
+            return data
+    except httpx.HTTPError as e:
         click.secho(f"Error fetching provider data: {e}", fg="red")
     except json.JSONDecodeError:
         click.secho("Error parsing provider data. Invalid JSON format.", fg="red")
     return None
 
 
-def download_data(response: requests.Response) -> dict[str, Any]:
+def download_data(response: httpx.Response) -> dict[str, Any]:
     """Downloads data from a given HTTP response and returns the JSON content.
 
     Args:
@@ -194,7 +194,7 @@ def download_data(response: requests.Response) -> dict[str, Any]:
     with click.progressbar(
         length=total_size, label="Downloading", show_pos=True
     ) as bar:
-        for chunk in response.iter_content(block_size):
+        for chunk in response.iter_bytes(block_size):
             if chunk:
                 data_chunks.append(chunk)
                 bar.update(len(chunk))

lib/crewai/src/crewai/experimental/agent_executor.py

@@ -1,7 +1,10 @@
 from __future__ import annotations
 
+import asyncio
 from collections.abc import Callable, Coroutine
+from concurrent.futures import ThreadPoolExecutor, as_completed
 from datetime import datetime
+import inspect
 import json
 import threading
 from typing import TYPE_CHECKING, Any, Literal, cast
@@ -63,6 +66,7 @@ from crewai.utilities.agent_utils import (
     has_reached_max_iterations,
     is_context_length_exceeded,
     is_inside_event_loop,
+    parse_tool_call_args,
     process_llm_response,
     track_delegation_if_needed,
 )
@@ -668,9 +672,12 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
         if not self.state.pending_tool_calls:
             return "native_tool_completed"
 
+        pending_tool_calls = list(self.state.pending_tool_calls)
+        self.state.pending_tool_calls.clear()
+
         # Group all tool calls into a single assistant message
         tool_calls_to_report = []
-        for tool_call in self.state.pending_tool_calls:
+        for tool_call in pending_tool_calls:
             info = extract_tool_call_info(tool_call)
             if not info:
                 continue
@@ -695,202 +702,86 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
                 "content": None,
                 "tool_calls": tool_calls_to_report,
             }
-            if all(
-                type(tc).__qualname__ == "Part" for tc in self.state.pending_tool_calls
-            ):
-                assistant_message["raw_tool_call_parts"] = list(
-                    self.state.pending_tool_calls
-                )
+            if all(type(tc).__qualname__ == "Part" for tc in pending_tool_calls):
+                assistant_message["raw_tool_call_parts"] = list(pending_tool_calls)
             self.state.messages.append(assistant_message)
 
-        # Now execute each tool
-        while self.state.pending_tool_calls:
-            tool_call = self.state.pending_tool_calls.pop(0)
-            info = extract_tool_call_info(tool_call)
-            if not info:
-                continue
+        runnable_tool_calls = [
+            tool_call
+            for tool_call in pending_tool_calls
+            if extract_tool_call_info(tool_call) is not None
+        ]
+        should_parallelize = self._should_parallelize_native_tool_calls(
+            runnable_tool_calls
+        )
 
-            call_id, func_name, func_args = info
-
-            # Parse arguments
-            if isinstance(func_args, str):
-                try:
-                    args_dict = json.loads(func_args)
-                except json.JSONDecodeError:
-                    args_dict = {}
-            else:
-                args_dict = func_args
-
-            # Get agent_key for event tracking
-            agent_key = (
-                getattr(self.agent, "key", "unknown") if self.agent else "unknown"
-            )
-
-            # Find original tool by matching sanitized name (needed for cache_function and result_as_answer)
-            original_tool = None
-            for tool in self.original_tools or []:
-                if sanitize_tool_name(tool.name) == func_name:
-                    original_tool = tool
-                    break
-
-            # Check if tool has reached max usage count
-            max_usage_reached = False
-            if (
-                original_tool
-                and original_tool.max_usage_count is not None
-                and original_tool.current_usage_count >= original_tool.max_usage_count
-            ):
-                max_usage_reached = True
-
-            # Check cache before executing
-            from_cache = False
-            input_str = json.dumps(args_dict) if args_dict else ""
-            if self.tools_handler and self.tools_handler.cache:
-                cached_result = self.tools_handler.cache.read(
-                    tool=func_name, input=input_str
+        execution_results: list[dict[str, Any]] = []
+        if should_parallelize:
+            max_workers = min(8, len(runnable_tool_calls))
+            with ThreadPoolExecutor(max_workers=max_workers) as pool:
+                future_to_idx = {
+                    pool.submit(self._execute_single_native_tool_call, tool_call): idx
+                    for idx, tool_call in enumerate(runnable_tool_calls)
+                }
+                ordered_results: list[dict[str, Any] | None] = [None] * len(
+                    runnable_tool_calls
                 )
-                if cached_result is not None:
-                    result = (
-                        str(cached_result)
-                        if not isinstance(cached_result, str)
-                        else cached_result
-                    )
-                    from_cache = True
+                for future in as_completed(future_to_idx):
+                    idx = future_to_idx[future]
+                    ordered_results[idx] = future.result()
+                execution_results = [
+                    result for result in ordered_results if result is not None
+                ]
+        else:
+            # Execute sequentially so result_as_answer tools can short-circuit
+            # immediately without running remaining calls.
+            for tool_call in runnable_tool_calls:
+                execution_result = self._execute_single_native_tool_call(tool_call)
+                call_id = cast(str, execution_result["call_id"])
+                func_name = cast(str, execution_result["func_name"])
+                result = cast(str, execution_result["result"])
+                from_cache = cast(bool, execution_result["from_cache"])
+                original_tool = execution_result["original_tool"]
 
-            # Emit tool usage started event
-            started_at = datetime.now()
-            crewai_event_bus.emit(
-                self,
-                event=ToolUsageStartedEvent(
-                    tool_name=func_name,
-                    tool_args=args_dict,
-                    from_agent=self.agent,
-                    from_task=self.task,
-                    agent_key=agent_key,
-                ),
-            )
-            error_event_emitted = False
+                tool_message: LLMMessage = {
+                    "role": "tool",
+                    "tool_call_id": call_id,
+                    "name": func_name,
+                    "content": result,
+                }
+                self.state.messages.append(tool_message)
 
-            track_delegation_if_needed(func_name, args_dict, self.task)
-
-            structured_tool: CrewStructuredTool | None = None
-            for structured in self.tools or []:
-                if sanitize_tool_name(structured.name) == func_name:
-                    structured_tool = structured
-                    break
-
-            hook_blocked = False
-            before_hook_context = ToolCallHookContext(
-                tool_name=func_name,
-                tool_input=args_dict,
-                tool=structured_tool,  # type: ignore[arg-type]
-                agent=self.agent,
-                task=self.task,
-                crew=self.crew,
-            )
-            before_hooks = get_before_tool_call_hooks()
-            try:
-                for hook in before_hooks:
-                    hook_result = hook(before_hook_context)
-                    if hook_result is False:
-                        hook_blocked = True
-                        break
-            except Exception as hook_error:
-                if self.agent.verbose:
+                # Log the tool execution
+                if self.agent and self.agent.verbose:
+                    cache_info = " (from cache)" if from_cache else ""
                     self._printer.print(
-                        content=f"Error in before_tool_call hook: {hook_error}",
-                        color="red",
+                        content=f"Tool {func_name} executed with result{cache_info}: {result[:200]}...",
+                        color="green",
                     )
 
-            if hook_blocked:
-                result = f"Tool execution blocked by hook. Tool: {func_name}"
-            elif not from_cache and not max_usage_reached:
-                result = "Tool not found"
-                if func_name in self._available_functions:
-                    try:
-                        tool_func = self._available_functions[func_name]
-                        raw_result = tool_func(**args_dict)
-
-                        # Add to cache after successful execution (before string conversion)
-                        if self.tools_handler and self.tools_handler.cache:
-                            should_cache = True
-                            if original_tool:
-                                should_cache = original_tool.cache_function(
-                                    args_dict, raw_result
-                                )
-                            if should_cache:
-                                self.tools_handler.cache.add(
-                                    tool=func_name, input=input_str, output=raw_result
-                                )
-
-                        # Convert to string for message
-                        result = (
-                            str(raw_result)
-                            if not isinstance(raw_result, str)
-                            else raw_result
-                        )
-                    except Exception as e:
-                        result = f"Error executing tool: {e}"
-                        if self.task:
-                            self.task.increment_tools_errors()
-                        # Emit tool usage error event
-                        crewai_event_bus.emit(
-                            self,
-                            event=ToolUsageErrorEvent(
-                                tool_name=func_name,
-                                tool_args=args_dict,
-                                from_agent=self.agent,
-                                from_task=self.task,
-                                agent_key=agent_key,
-                                error=e,
-                            ),
-                        )
-                        error_event_emitted = True
-            elif max_usage_reached and original_tool:
-                # Return error message when max usage limit is reached
-                result = f"Tool '{func_name}' has reached its usage limit of {original_tool.max_usage_count} times and cannot be used anymore."
-
-            # Execute after_tool_call hooks (even if blocked, to allow logging/monitoring)
-            after_hook_context = ToolCallHookContext(
-                tool_name=func_name,
-                tool_input=args_dict,
-                tool=structured_tool,  # type: ignore[arg-type]
-                agent=self.agent,
-                task=self.task,
-                crew=self.crew,
-                tool_result=result,
-            )
-            after_hooks = get_after_tool_call_hooks()
-            try:
-                for after_hook in after_hooks:
-                    after_hook_result = after_hook(after_hook_context)
-                    if after_hook_result is not None:
-                        result = after_hook_result
-                        after_hook_context.tool_result = result
-            except Exception as hook_error:
-                if self.agent.verbose:
-                    self._printer.print(
-                        content=f"Error in after_tool_call hook: {hook_error}",
-                        color="red",
-                    )
-
-            if not error_event_emitted:
-                crewai_event_bus.emit(
-                    self,
-                    event=ToolUsageFinishedEvent(
+                if (
+                    original_tool
+                    and hasattr(original_tool, "result_as_answer")
+                    and original_tool.result_as_answer
+                ):
+                    self.state.current_answer = AgentFinish(
+                        thought="Tool result is the final answer",
                         output=result,
-                        tool_name=func_name,
-                        tool_args=args_dict,
-                        from_agent=self.agent,
-                        from_task=self.task,
-                        agent_key=agent_key,
-                        started_at=started_at,
-                        finished_at=datetime.now(),
-                    ),
-                )
+                        text=result,
+                    )
+                    self.state.is_finished = True
+                    return "tool_result_is_final"
 
-            # Append tool result message
-            tool_message: LLMMessage = {
+            return "native_tool_completed"
+
+        for execution_result in execution_results:
+            call_id = cast(str, execution_result["call_id"])
+            func_name = cast(str, execution_result["func_name"])
+            result = cast(str, execution_result["result"])
+            from_cache = cast(bool, execution_result["from_cache"])
+            original_tool = execution_result["original_tool"]
+
+            tool_message = {
                 "role": "tool",
                 "tool_call_id": call_id,
                 "name": func_name,
@@ -922,6 +813,220 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
 
         return "native_tool_completed"
 
+    def _should_parallelize_native_tool_calls(self, tool_calls: list[Any]) -> bool:
+        """Determine if native tool calls are safe to run in parallel."""
+        if len(tool_calls) <= 1:
+            return False
+
+        for tool_call in tool_calls:
+            info = extract_tool_call_info(tool_call)
+            if not info:
+                continue
+            _, func_name, _ = info
+
+            original_tool = None
+            for tool in self.original_tools or []:
+                if sanitize_tool_name(tool.name) == func_name:
+                    original_tool = tool
+                    break
+
+            if not original_tool:
+                continue
+
+            if getattr(original_tool, "result_as_answer", False):
+                return False
+            if getattr(original_tool, "max_usage_count", None) is not None:
+                return False
+
+        return True
+
+    def _execute_single_native_tool_call(self, tool_call: Any) -> dict[str, Any]:
+        """Execute a single native tool call and return metadata/result."""
+        info = extract_tool_call_info(tool_call)
+        if not info:
+            raise ValueError("Invalid native tool call format")
+
+        call_id, func_name, func_args = info
+
+        # Parse arguments
+        args_dict, parse_error = parse_tool_call_args(func_args, func_name, call_id)
+        if parse_error is not None:
+            return parse_error
+
+        # Get agent_key for event tracking
+        agent_key = getattr(self.agent, "key", "unknown") if self.agent else "unknown"
+
+        # Find original tool by matching sanitized name (needed for cache_function and result_as_answer)
+        original_tool = None
+        for tool in self.original_tools or []:
+            if sanitize_tool_name(tool.name) == func_name:
+                original_tool = tool
+                break
+
+        # Check if tool has reached max usage count
+        max_usage_reached = False
+        if (
+            original_tool
+            and original_tool.max_usage_count is not None
+            and original_tool.current_usage_count >= original_tool.max_usage_count
+        ):
+            max_usage_reached = True
+
+        # Check cache before executing
+        from_cache = False
+        input_str = json.dumps(args_dict) if args_dict else ""
+        if self.tools_handler and self.tools_handler.cache:
+            cached_result = self.tools_handler.cache.read(
+                tool=func_name, input=input_str
+            )
+            if cached_result is not None:
+                result = (
+                    str(cached_result)
+                    if not isinstance(cached_result, str)
+                    else cached_result
+                )
+                from_cache = True
+
+        # Emit tool usage started event
+        started_at = datetime.now()
+        crewai_event_bus.emit(
+            self,
+            event=ToolUsageStartedEvent(
+                tool_name=func_name,
+                tool_args=args_dict,
+                from_agent=self.agent,
+                from_task=self.task,
+                agent_key=agent_key,
+            ),
+        )
+        error_event_emitted = False
+
+        track_delegation_if_needed(func_name, args_dict, self.task)
+
+        structured_tool: CrewStructuredTool | None = None
+        for structured in self.tools or []:
+            if sanitize_tool_name(structured.name) == func_name:
+                structured_tool = structured
+                break
+
+        hook_blocked = False
+        before_hook_context = ToolCallHookContext(
+            tool_name=func_name,
+            tool_input=args_dict,
+            tool=structured_tool,  # type: ignore[arg-type]
+            agent=self.agent,
+            task=self.task,
+            crew=self.crew,
+        )
+        before_hooks = get_before_tool_call_hooks()
+        try:
+            for hook in before_hooks:
+                hook_result = hook(before_hook_context)
+                if hook_result is False:
+                    hook_blocked = True
+                    break
+        except Exception as hook_error:
+            if self.agent.verbose:
+                self._printer.print(
+                    content=f"Error in before_tool_call hook: {hook_error}",
+                    color="red",
+                )
+
+        if hook_blocked:
+            result = f"Tool execution blocked by hook. Tool: {func_name}"
+        elif not from_cache and not max_usage_reached:
+            result = "Tool not found"
+            if func_name in self._available_functions:
+                try:
+                    tool_func = self._available_functions[func_name]
+                    raw_result = tool_func(**args_dict)
+
+                    # Add to cache after successful execution (before string conversion)
+                    if self.tools_handler and self.tools_handler.cache:
+                        should_cache = True
+                        if original_tool:
+                            should_cache = original_tool.cache_function(
+                                args_dict, raw_result
+                            )
+                        if should_cache:
+                            self.tools_handler.cache.add(
+                                tool=func_name, input=input_str, output=raw_result
+                            )
+
+                    # Convert to string for message
+                    result = (
+                        str(raw_result)
+                        if not isinstance(raw_result, str)
+                        else raw_result
+                    )
+                except Exception as e:
+                    result = f"Error executing tool: {e}"
+                    if self.task:
+                        self.task.increment_tools_errors()
+                    # Emit tool usage error event
+                    crewai_event_bus.emit(
+                        self,
+                        event=ToolUsageErrorEvent(
+                            tool_name=func_name,
+                            tool_args=args_dict,
+                            from_agent=self.agent,
+                            from_task=self.task,
+                            agent_key=agent_key,
+                            error=e,
+                        ),
+                    )
+                    error_event_emitted = True
+        elif max_usage_reached and original_tool:
+            # Return error message when max usage limit is reached
+            result = f"Tool '{func_name}' has reached its usage limit of {original_tool.max_usage_count} times and cannot be used anymore."
+
+        # Execute after_tool_call hooks (even if blocked, to allow logging/monitoring)
+        after_hook_context = ToolCallHookContext(
+            tool_name=func_name,
+            tool_input=args_dict,
+            tool=structured_tool,  # type: ignore[arg-type]
+            agent=self.agent,
+            task=self.task,
+            crew=self.crew,
+            tool_result=result,
+        )
+        after_hooks = get_after_tool_call_hooks()
+        try:
+            for after_hook in after_hooks:
+                after_hook_result = after_hook(after_hook_context)
+                if after_hook_result is not None:
+                    result = after_hook_result
+                    after_hook_context.tool_result = result
+        except Exception as hook_error:
+            if self.agent.verbose:
+                self._printer.print(
+                    content=f"Error in after_tool_call hook: {hook_error}",
+                    color="red",
+                )
+
+        if not error_event_emitted:
+            crewai_event_bus.emit(
+                self,
+                event=ToolUsageFinishedEvent(
+                    output=result,
+                    tool_name=func_name,
+                    tool_args=args_dict,
+                    from_agent=self.agent,
+                    from_task=self.task,
+                    agent_key=agent_key,
+                    started_at=started_at,
+                    finished_at=datetime.now(),
+                ),
+            )
+
+        return {
+            "call_id": call_id,
+            "func_name": func_name,
+            "result": result,
+            "from_cache": from_cache,
+            "original_tool": original_tool,
+        }
+
     def _extract_tool_name(self, tool_call: Any) -> str:
         """Extract tool name from various tool call formats."""
         if hasattr(tool_call, "function"):
@@ -1252,7 +1357,9 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
             formatted_answer: Current agent response.
         """
         if self.step_callback:
-            self.step_callback(formatted_answer)
+            cb_result = self.step_callback(formatted_answer)
+            if inspect.iscoroutine(cb_result):
+                asyncio.run(cb_result)
 
     def _append_message_to_state(
         self, text: str, role: Literal["user", "assistant", "system"] = "assistant"

lib/crewai/src/crewai/flow/flow.py

@@ -10,6 +10,7 @@ import asyncio
 from collections.abc import (
     Callable,
     ItemsView,
+    Iterable,
     Iterator,
     KeysView,
     Sequence,
@@ -17,6 +18,7 @@ from collections.abc import (
 )
 from concurrent.futures import Future
 import copy
+import enum
 import inspect
 import logging
 import threading
@@ -27,8 +29,10 @@ from typing import (
     Generic,
     Literal,
     ParamSpec,
+    SupportsIndex,
     TypeVar,
     cast,
+    overload,
 )
 from uuid import uuid4
 
@@ -77,7 +81,12 @@ from crewai.flow.flow_wrappers import (
     StartMethod,
 )
 from crewai.flow.persistence.base import FlowPersistence
-from crewai.flow.types import FlowExecutionData, FlowMethodName, InputHistoryEntry, PendingListenerKey
+from crewai.flow.types import (
+    FlowExecutionData,
+    FlowMethodName,
+    InputHistoryEntry,
+    PendingListenerKey,
+)
 from crewai.flow.utils import (
     _extract_all_methods,
     _extract_all_methods_recursive,
@@ -426,8 +435,7 @@ class LockedListProxy(list, Generic[T]):  # type: ignore[type-arg]
     """
 
     def __init__(self, lst: list[T], lock: threading.Lock) -> None:
-        # Do NOT call super().__init__() -- we don't want to copy data into
-        # the builtin list storage. All access goes through self._list.
+        super().__init__()  # empty builtin list; all access goes through self._list
         self._list = lst
         self._lock = lock
 
@@ -435,11 +443,11 @@ class LockedListProxy(list, Generic[T]):  # type: ignore[type-arg]
         with self._lock:
             self._list.append(item)
 
-    def extend(self, items: list[T]) -> None:
+    def extend(self, items: Iterable[T]) -> None:
         with self._lock:
             self._list.extend(items)
 
-    def insert(self, index: int, item: T) -> None:
+    def insert(self, index: SupportsIndex, item: T) -> None:
         with self._lock:
             self._list.insert(index, item)
 
@@ -447,7 +455,7 @@ class LockedListProxy(list, Generic[T]):  # type: ignore[type-arg]
         with self._lock:
             self._list.remove(item)
 
-    def pop(self, index: int = -1) -> T:
+    def pop(self, index: SupportsIndex = -1) -> T:
         with self._lock:
             return self._list.pop(index)
 
@@ -455,15 +463,23 @@ class LockedListProxy(list, Generic[T]):  # type: ignore[type-arg]
         with self._lock:
             self._list.clear()
 
-    def __setitem__(self, index: int, value: T) -> None:
+    @overload
+    def __setitem__(self, index: SupportsIndex, value: T) -> None: ...
+    @overload
+    def __setitem__(self, index: slice, value: Iterable[T]) -> None: ...
+    def __setitem__(self, index: Any, value: Any) -> None:
         with self._lock:
             self._list[index] = value
 
-    def __delitem__(self, index: int) -> None:
+    def __delitem__(self, index: SupportsIndex | slice) -> None:
         with self._lock:
             del self._list[index]
 
-    def __getitem__(self, index: int) -> T:
+    @overload
+    def __getitem__(self, index: SupportsIndex) -> T: ...
+    @overload
+    def __getitem__(self, index: slice) -> list[T]: ...
+    def __getitem__(self, index: Any) -> Any:
         return self._list[index]
 
     def __len__(self) -> int:
@@ -481,7 +497,7 @@ class LockedListProxy(list, Generic[T]):  # type: ignore[type-arg]
     def __bool__(self) -> bool:
         return bool(self._list)
 
-    def __eq__(self, other: object) -> bool:  # type: ignore[override]
+    def __eq__(self, other: object) -> bool:
         """Compare based on the underlying list contents."""
         if isinstance(other, LockedListProxy):
             # Avoid deadlocks by acquiring locks in a consistent order.
@@ -492,7 +508,7 @@ class LockedListProxy(list, Generic[T]):  # type: ignore[type-arg]
         with self._lock:
             return self._list == other
 
-    def __ne__(self, other: object) -> bool:  # type: ignore[override]
+    def __ne__(self, other: object) -> bool:
         return not self.__eq__(other)
 
 
@@ -505,8 +521,7 @@ class LockedDictProxy(dict, Generic[T]):  # type: ignore[type-arg]
     """
 
     def __init__(self, d: dict[str, T], lock: threading.Lock) -> None:
-        # Do NOT call super().__init__() -- we don't want to copy data into
-        # the builtin dict storage. All access goes through self._dict.
+        super().__init__()  # empty builtin dict; all access goes through self._dict
         self._dict = d
         self._lock = lock
 
@@ -518,11 +533,11 @@ class LockedDictProxy(dict, Generic[T]):  # type: ignore[type-arg]
         with self._lock:
             del self._dict[key]
 
-    def pop(self, key: str, *default: T) -> T:
+    def pop(self, key: str, *default: T) -> T:  # type: ignore[override]
         with self._lock:
             return self._dict.pop(key, *default)
 
-    def update(self, other: dict[str, T]) -> None:
+    def update(self, other: dict[str, T]) -> None:  # type: ignore[override]
         with self._lock:
             self._dict.update(other)
 
@@ -530,7 +545,7 @@ class LockedDictProxy(dict, Generic[T]):  # type: ignore[type-arg]
         with self._lock:
             self._dict.clear()
 
-    def setdefault(self, key: str, default: T) -> T:
+    def setdefault(self, key: str, default: T) -> T:  # type: ignore[override]
         with self._lock:
             return self._dict.setdefault(key, default)
 
@@ -546,16 +561,16 @@ class LockedDictProxy(dict, Generic[T]):  # type: ignore[type-arg]
     def __contains__(self, key: object) -> bool:
         return key in self._dict
 
-    def keys(self) -> KeysView[str]:
+    def keys(self) -> KeysView[str]:  # type: ignore[override]
         return self._dict.keys()
 
-    def values(self) -> ValuesView[T]:
+    def values(self) -> ValuesView[T]:  # type: ignore[override]
         return self._dict.values()
 
-    def items(self) -> ItemsView[str, T]:
+    def items(self) -> ItemsView[str, T]:  # type: ignore[override]
         return self._dict.items()
 
-    def get(self, key: str, default: T | None = None) -> T | None:
+    def get(self, key: str, default: T | None = None) -> T | None:  # type: ignore[override]
         return self._dict.get(key, default)
 
     def __repr__(self) -> str:
@@ -564,7 +579,7 @@ class LockedDictProxy(dict, Generic[T]):  # type: ignore[type-arg]
     def __bool__(self) -> bool:
         return bool(self._dict)
 
-    def __eq__(self, other: object) -> bool:  # type: ignore[override]
+    def __eq__(self, other: object) -> bool:
         """Compare based on the underlying dict contents."""
         if isinstance(other, LockedDictProxy):
             # Avoid deadlocks by acquiring locks in a consistent order.
@@ -575,7 +590,7 @@ class LockedDictProxy(dict, Generic[T]):  # type: ignore[type-arg]
         with self._lock:
             return self._dict == other
 
-    def __ne__(self, other: object) -> bool:  # type: ignore[override]
+    def __ne__(self, other: object) -> bool:
         return not self.__eq__(other)
 
 
@@ -737,7 +752,9 @@ class Flow(Generic[T], metaclass=FlowMeta):
     name: str | None = None
     tracing: bool | None = None
     stream: bool = False
-    memory: Any = None  # Memory | MemoryScope | MemorySlice | None; auto-created if not set
+    memory: Any = (
+        None  # Memory | MemoryScope | MemorySlice | None; auto-created if not set
+    )
     input_provider: Any = None  # InputProvider | None; per-flow override for self.ask()
 
     def __class_getitem__(cls: type[Flow[T]], item: type[T]) -> type[Flow[T]]:
@@ -881,7 +898,8 @@ class Flow(Generic[T], metaclass=FlowMeta):
         """
         if self.memory is None:
             raise ValueError("No memory configured for this flow")
-        return self.memory.extract_memories(content)
+        result: list[str] = self.memory.extract_memories(content)
+        return result
 
     def _mark_or_listener_fired(self, listener_name: FlowMethodName) -> bool:
         """Mark an OR listener as fired atomically.
@@ -1352,8 +1370,10 @@ class Flow(Generic[T], metaclass=FlowMeta):
             ValueError: If structured state model lacks 'id' field
             TypeError: If state is neither BaseModel nor dictionary
         """
+        init_state = self.initial_state
+
         # Handle case where initial_state is None but we have a type parameter
-        if self.initial_state is None and hasattr(self, "_initial_state_t"):
+        if init_state is None and hasattr(self, "_initial_state_t"):
             state_type = self._initial_state_t
             if isinstance(state_type, type):
                 if issubclass(state_type, FlowState):
@@ -1377,12 +1397,12 @@ class Flow(Generic[T], metaclass=FlowMeta):
                     return cast(T, {"id": str(uuid4())})
 
         # Handle case where no initial state is provided
-        if self.initial_state is None:
+        if init_state is None:
             return cast(T, {"id": str(uuid4())})
 
         # Handle case where initial_state is a type (class)
-        if isinstance(self.initial_state, type):
-            state_class: type[T] = self.initial_state
+        if isinstance(init_state, type):
+            state_class = init_state
             if issubclass(state_class, FlowState):
                 return state_class()
             if issubclass(state_class, BaseModel):
@@ -1393,19 +1413,19 @@ class Flow(Generic[T], metaclass=FlowMeta):
                 if not getattr(model_instance, "id", None):
                     object.__setattr__(model_instance, "id", str(uuid4()))
                 return model_instance
-            if self.initial_state is dict:
+            if init_state is dict:
                 return cast(T, {"id": str(uuid4())})
 
         # Handle dictionary instance case
-        if isinstance(self.initial_state, dict):
-            new_state = dict(self.initial_state)  # Copy to avoid mutations
+        if isinstance(init_state, dict):
+            new_state = dict(init_state)  # Copy to avoid mutations
             if "id" not in new_state:
                 new_state["id"] = str(uuid4())
             return cast(T, new_state)
 
         # Handle BaseModel instance case
-        if isinstance(self.initial_state, BaseModel):
-            model = cast(BaseModel, self.initial_state)
+        if isinstance(init_state, BaseModel):
+            model = cast(BaseModel, init_state)
             if not hasattr(model, "id"):
                 raise ValueError("Flow state model must have an 'id' field")
 
@@ -2178,6 +2198,8 @@ class Flow(Generic[T], metaclass=FlowMeta):
             from crewai.flow.async_feedback.types import HumanFeedbackPending
 
             if isinstance(e, HumanFeedbackPending):
+                e.context.method_name = method_name
+
                 # Auto-save pending feedback (create default persistence if needed)
                 if self._persistence is None:
                     from crewai.flow.persistence import SQLiteFlowPersistence
@@ -2277,14 +2299,23 @@ class Flow(Generic[T], metaclass=FlowMeta):
                     router_name, router_input, current_triggering_event_id
                 )
                 if router_result:  # Only add non-None results
-                    router_results.append(FlowMethodName(str(router_result)))
+                    router_result_str = (
+                        router_result.value
+                        if isinstance(router_result, enum.Enum)
+                        else str(router_result)
+                    )
+                    router_results.append(FlowMethodName(router_result_str))
                     # If this was a human_feedback router, map the outcome to the feedback
                     if self.last_human_feedback is not None:
-                        router_result_to_feedback[str(router_result)] = (
+                        router_result_to_feedback[router_result_str] = (
                             self.last_human_feedback
                         )
                 current_trigger = (
-                    FlowMethodName(str(router_result))
+                    FlowMethodName(
+                        router_result.value
+                        if isinstance(router_result, enum.Enum)
+                        else str(router_result)
+                    )
                     if router_result is not None
                     else FlowMethodName("")  # Update for next iteration of router chain
                 )
@@ -2701,7 +2732,10 @@ class Flow(Generic[T], metaclass=FlowMeta):
                     return topic
             ```
         """
-        from concurrent.futures import ThreadPoolExecutor, TimeoutError as FuturesTimeoutError
+        from concurrent.futures import (
+            ThreadPoolExecutor,
+            TimeoutError as FuturesTimeoutError,
+        )
         from datetime import datetime
 
         from crewai.events.types.flow_events import (
@@ -2770,14 +2804,16 @@ class Flow(Generic[T], metaclass=FlowMeta):
             response = None
 
         # Record in history
-        self._input_history.append({
-            "message": message,
-            "response": response,
-            "method_name": method_name,
-            "timestamp": datetime.now(),
-            "metadata": metadata,
-            "response_metadata": response_metadata,
-        })
+        self._input_history.append(
+            {
+                "message": message,
+                "response": response,
+                "method_name": method_name,
+                "timestamp": datetime.now(),
+                "metadata": metadata,
+                "response_metadata": response_metadata,
+            }
+        )
 
         # Emit input received event
         crewai_event_bus.emit(

lib/crewai/src/crewai/lite_agent.py

@@ -2,10 +2,10 @@ from __future__ import annotations
 
 import asyncio
 from collections.abc import Callable
-import time
 from functools import wraps
 import inspect
 import json
+import time
 from types import MethodType
 from typing import (
     TYPE_CHECKING,
@@ -49,15 +49,20 @@ from crewai.events.types.agent_events import (
     LiteAgentExecutionErrorEvent,
     LiteAgentExecutionStartedEvent,
 )
+from crewai.events.types.logging_events import AgentLogsExecutionEvent
 from crewai.events.types.memory_events import (
     MemoryRetrievalCompletedEvent,
     MemoryRetrievalFailedEvent,
     MemoryRetrievalStartedEvent,
 )
-from crewai.events.types.logging_events import AgentLogsExecutionEvent
 from crewai.flow.flow_trackable import FlowTrackable
 from crewai.hooks.llm_hooks import get_after_llm_call_hooks, get_before_llm_call_hooks
-from crewai.hooks.types import AfterLLMCallHookType, BeforeLLMCallHookType
+from crewai.hooks.types import (
+    AfterLLMCallHookCallable,
+    AfterLLMCallHookType,
+    BeforeLLMCallHookCallable,
+    BeforeLLMCallHookType,
+)
 from crewai.lite_agent_output import LiteAgentOutput
 from crewai.llm import LLM
 from crewai.llms.base_llm import BaseLLM
@@ -270,11 +275,11 @@ class LiteAgent(FlowTrackable, BaseModel):
     _guardrail: GuardrailCallable | None = PrivateAttr(default=None)
     _guardrail_retry_count: int = PrivateAttr(default=0)
     _callbacks: list[TokenCalcHandler] = PrivateAttr(default_factory=list)
-    _before_llm_call_hooks: list[BeforeLLMCallHookType] = PrivateAttr(
-        default_factory=get_before_llm_call_hooks
+    _before_llm_call_hooks: list[BeforeLLMCallHookType | BeforeLLMCallHookCallable] = (
+        PrivateAttr(default_factory=get_before_llm_call_hooks)
     )
-    _after_llm_call_hooks: list[AfterLLMCallHookType] = PrivateAttr(
-        default_factory=get_after_llm_call_hooks
+    _after_llm_call_hooks: list[AfterLLMCallHookType | AfterLLMCallHookCallable] = (
+        PrivateAttr(default_factory=get_after_llm_call_hooks)
     )
     _memory: Any = PrivateAttr(default=None)
 
@@ -440,12 +445,16 @@ class LiteAgent(FlowTrackable, BaseModel):
         return self.role
 
     @property
-    def before_llm_call_hooks(self) -> list[BeforeLLMCallHookType]:
+    def before_llm_call_hooks(
+        self,
+    ) -> list[BeforeLLMCallHookType | BeforeLLMCallHookCallable]:
         """Get the before_llm_call hooks for this agent."""
         return self._before_llm_call_hooks
 
     @property
-    def after_llm_call_hooks(self) -> list[AfterLLMCallHookType]:
+    def after_llm_call_hooks(
+        self,
+    ) -> list[AfterLLMCallHookType | AfterLLMCallHookCallable]:
         """Get the after_llm_call hooks for this agent."""
         return self._after_llm_call_hooks
 
@@ -482,11 +491,12 @@ class LiteAgent(FlowTrackable, BaseModel):
         # Inject memory tools once if memory is configured (mirrors Agent._prepare_kickoff)
         if self._memory is not None:
             from crewai.tools.memory_tools import create_memory_tools
-            from crewai.utilities.agent_utils import sanitize_tool_name
+            from crewai.utilities.string_utils import sanitize_tool_name
 
             existing_names = {sanitize_tool_name(t.name) for t in self._parsed_tools}
             memory_tools = [
-                mt for mt in create_memory_tools(self._memory)
+                mt
+                for mt in create_memory_tools(self._memory)
                 if sanitize_tool_name(mt.name) not in existing_names
             ]
             if memory_tools:
@@ -565,9 +575,10 @@ class LiteAgent(FlowTrackable, BaseModel):
             if memory_block:
                 formatted = self.i18n.slice("memory").format(memory=memory_block)
                 if self._messages and self._messages[0].get("role") == "system":
-                    self._messages[0]["content"] = (
-                        self._messages[0].get("content", "") + "\n\n" + formatted
-                    )
+                    existing_content = self._messages[0].get("content", "")
+                    if not isinstance(existing_content, str):
+                        existing_content = ""
+                    self._messages[0]["content"] = existing_content + "\n\n" + formatted
             crewai_event_bus.emit(
                 self,
                 event=MemoryRetrievalCompletedEvent(
@@ -593,11 +604,7 @@ class LiteAgent(FlowTrackable, BaseModel):
             return
         input_str = self._get_last_user_content() or "User request"
         try:
-            raw = (
-                f"Input: {input_str}\n"
-                f"Agent: {self.role}\n"
-                f"Result: {output_text}"
-            )
+            raw = f"Input: {input_str}\nAgent: {self.role}\nResult: {output_text}"
             extracted = self._memory.extract_memories(raw)
             if extracted:
                 self._memory.remember_many(extracted, agent_role=self.role)
@@ -622,13 +629,20 @@ class LiteAgent(FlowTrackable, BaseModel):
         )
 
         # Execute the agent using invoke loop
-        agent_finish = self._invoke_loop()
+        active_response_format = response_format or self.response_format
+        agent_finish = self._invoke_loop(response_model=active_response_format)
         if self._memory is not None:
-            self._save_to_memory(agent_finish.output)
+            output_text = (
+                agent_finish.output.model_dump_json()
+                if isinstance(agent_finish.output, BaseModel)
+                else agent_finish.output
+            )
+            self._save_to_memory(output_text)
         formatted_result: BaseModel | None = None
 
-        active_response_format = response_format or self.response_format
-        if active_response_format:
+        if isinstance(agent_finish.output, BaseModel):
+            formatted_result = agent_finish.output
+        elif active_response_format:
             try:
                 model_schema = generate_model_description(active_response_format)
                 schema = json.dumps(model_schema, indent=2)
@@ -660,8 +674,13 @@ class LiteAgent(FlowTrackable, BaseModel):
             usage_metrics = self._token_process.get_summary()
 
         # Create output
+        raw_output = (
+            agent_finish.output.model_dump_json()
+            if isinstance(agent_finish.output, BaseModel)
+            else agent_finish.output
+        )
         output = LiteAgentOutput(
-            raw=agent_finish.output,
+            raw=raw_output,
             pydantic=formatted_result,
             agent_role=self.role,
             usage_metrics=usage_metrics.model_dump() if usage_metrics else None,
@@ -838,10 +857,15 @@ class LiteAgent(FlowTrackable, BaseModel):
 
         return formatted_messages
 
-    def _invoke_loop(self) -> AgentFinish:
+    def _invoke_loop(
+        self, response_model: type[BaseModel] | None = None
+    ) -> AgentFinish:
         """
         Run the agent's thought process until it reaches a conclusion or max iterations.
 
+        Args:
+            response_model: Optional Pydantic model for native structured output.
+
         Returns:
             AgentFinish: The final result of the agent execution.
         """
@@ -870,12 +894,19 @@ class LiteAgent(FlowTrackable, BaseModel):
                         printer=self._printer,
                         from_agent=self,
                         executor_context=self,
+                        response_model=response_model,
                         verbose=self.verbose,
                     )
 
                 except Exception as e:
                     raise e
 
+                if isinstance(answer, BaseModel):
+                    formatted_answer = AgentFinish(
+                        thought="", output=answer, text=answer.model_dump_json()
+                    )
+                    break
+
                 formatted_answer = process_llm_response(
                     cast(str, answer), self.use_stop_words
                 )
@@ -901,7 +932,7 @@ class LiteAgent(FlowTrackable, BaseModel):
                     )
 
                 self._append_message(formatted_answer.text, role="assistant")
-            except OutputParserError as e:  # noqa: PERF203
+            except OutputParserError as e:
                 if self.verbose:
                     self._printer.print(
                         content="Failed to parse LLM output. Retrying...",

lib/crewai/src/crewai/llms/providers/bedrock/completion.py

@@ -234,7 +234,7 @@ class BedrockCompletion(BaseLLM):
         aws_access_key_id: str | None = None,
         aws_secret_access_key: str | None = None,
         aws_session_token: str | None = None,
-        region_name: str = "us-east-1",
+        region_name: str | None = None,
         temperature: float | None = None,
         max_tokens: int | None = None,
         top_p: float | None = None,
@@ -287,15 +287,6 @@ class BedrockCompletion(BaseLLM):
             **kwargs,
         )
 
-        # Initialize Bedrock client with proper configuration
-        session = Session(
-            aws_access_key_id=aws_access_key_id or os.getenv("AWS_ACCESS_KEY_ID"),
-            aws_secret_access_key=aws_secret_access_key
-            or os.getenv("AWS_SECRET_ACCESS_KEY"),
-            aws_session_token=aws_session_token or os.getenv("AWS_SESSION_TOKEN"),
-            region_name=region_name,
-        )
-
         # Configure client with timeouts and retries following AWS best practices
         config = Config(
             read_timeout=300,
@@ -306,8 +297,12 @@ class BedrockCompletion(BaseLLM):
             tcp_keepalive=True,
         )
 
-        self.client = session.client("bedrock-runtime", config=config)
-        self.region_name = region_name
+        self.region_name = (
+            region_name
+            or os.getenv("AWS_DEFAULT_REGION")
+            or os.getenv("AWS_REGION_NAME")
+            or "us-east-1"
+        )
 
         self.aws_access_key_id = aws_access_key_id or os.getenv("AWS_ACCESS_KEY_ID")
         self.aws_secret_access_key = aws_secret_access_key or os.getenv(
@@ -315,6 +310,16 @@ class BedrockCompletion(BaseLLM):
         )
         self.aws_session_token = aws_session_token or os.getenv("AWS_SESSION_TOKEN")
 
+        # Initialize Bedrock client with proper configuration
+        session = Session(
+            aws_access_key_id=self.aws_access_key_id,
+            aws_secret_access_key=self.aws_secret_access_key,
+            aws_session_token=self.aws_session_token,
+            region_name=self.region_name,
+        )
+
+        self.client = session.client("bedrock-runtime", config=config)
+
         self._async_exit_stack = AsyncExitStack() if AIOBOTOCORE_AVAILABLE else None
         self._async_client_initialized = False
 
@@ -1943,6 +1948,9 @@ class BedrockCompletion(BaseLLM):
     ) -> list[ConverseToolTypeDef]:
         """Convert CrewAI tools to Converse API format following AWS specification."""
         from crewai.llms.providers.utils.common import safe_tool_conversion
+        from crewai.utilities.pydantic_schema_utils import (
+            strip_openai_specific_schema_fields,
+        )
 
         converse_tools: list[ConverseToolTypeDef] = []
 
@@ -1956,6 +1964,7 @@ class BedrockCompletion(BaseLLM):
                 }
 
                 if parameters and isinstance(parameters, dict):
+                    parameters = strip_openai_specific_schema_fields(parameters)
                     input_schema: ToolInputSchema = {"json": parameters}
                     tool_spec["inputSchema"] = input_schema
 

lib/crewai/src/crewai/llms/providers/gemini/completion.py

@@ -529,10 +529,16 @@ class GeminiCompletion(BaseLLM):
         gemini_tools = []
 
         from crewai.llms.providers.utils.common import safe_tool_conversion
+        from crewai.utilities.pydantic_schema_utils import (
+            strip_openai_specific_schema_fields,
+        )
 
         for tool in tools:
             name, description, parameters = safe_tool_conversion(tool, "Gemini")
 
+            if parameters:
+                parameters = strip_openai_specific_schema_fields(parameters)
+
             function_declaration = types.FunctionDeclaration(
                 name=name,
                 description=description,
@@ -894,7 +900,7 @@ class GeminiCompletion(BaseLLM):
         content = self._extract_text_from_response(response)
 
         effective_response_model = None if self.tools else response_model
-        if not effective_response_model:
+        if not response_model:
             content = self._apply_stop_words(content)
 
         return self._finalize_completion_response(

lib/crewai/src/crewai/task.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import asyncio
 from concurrent.futures import Future
 from copy import copy as shallow_copy
 import datetime
@@ -585,16 +586,29 @@ class Task(BaseModel):
 
             self._post_agent_execution(agent)
 
-            if not self._guardrails and not self._guardrail:
+            if isinstance(result, BaseModel):
+                raw = result.model_dump_json()
+                if self.output_pydantic:
+                    pydantic_output = result
+                    json_output = None
+                elif self.output_json:
+                    pydantic_output = None
+                    json_output = result.model_dump()
+                else:
+                    pydantic_output = None
+                    json_output = None
+            elif not self._guardrails and not self._guardrail:
+                raw = result
                 pydantic_output, json_output = self._export_output(result)
             else:
+                raw = result
                 pydantic_output, json_output = None, None
 
             task_output = TaskOutput(
                 name=self.name or self.description,
                 description=self.description,
                 expected_output=self.expected_output,
-                raw=result,
+                raw=raw,
                 pydantic=pydantic_output,
                 json_dict=json_output,
                 agent=agent.role,
@@ -624,11 +638,15 @@ class Task(BaseModel):
             self.end_time = datetime.datetime.now()
 
             if self.callback:
-                self.callback(self.output)
+                cb_result = self.callback(self.output)
+                if inspect.isawaitable(cb_result):
+                    await cb_result
 
             crew = self.agent.crew  # type: ignore[union-attr]
             if crew and crew.task_callback and crew.task_callback != self.callback:
-                crew.task_callback(self.output)
+                cb_result = crew.task_callback(self.output)
+                if inspect.isawaitable(cb_result):
+                    await cb_result
 
             if self.output_file:
                 content = (
@@ -682,16 +700,29 @@ class Task(BaseModel):
 
             self._post_agent_execution(agent)
 
-            if not self._guardrails and not self._guardrail:
+            if isinstance(result, BaseModel):
+                raw = result.model_dump_json()
+                if self.output_pydantic:
+                    pydantic_output = result
+                    json_output = None
+                elif self.output_json:
+                    pydantic_output = None
+                    json_output = result.model_dump()
+                else:
+                    pydantic_output = None
+                    json_output = None
+            elif not self._guardrails and not self._guardrail:
+                raw = result
                 pydantic_output, json_output = self._export_output(result)
             else:
+                raw = result
                 pydantic_output, json_output = None, None
 
             task_output = TaskOutput(
                 name=self.name or self.description,
                 description=self.description,
                 expected_output=self.expected_output,
-                raw=result,
+                raw=raw,
                 pydantic=pydantic_output,
                 json_dict=json_output,
                 agent=agent.role,
@@ -722,11 +753,15 @@ class Task(BaseModel):
             self.end_time = datetime.datetime.now()
 
             if self.callback:
-                self.callback(self.output)
+                cb_result = self.callback(self.output)
+                if inspect.iscoroutine(cb_result):
+                    asyncio.run(cb_result)
 
             crew = self.agent.crew  # type: ignore[union-attr]
             if crew and crew.task_callback and crew.task_callback != self.callback:
-                crew.task_callback(self.output)
+                cb_result = crew.task_callback(self.output)
+                if inspect.iscoroutine(cb_result):
+                    asyncio.run(cb_result)
 
             if self.output_file:
                 content = (

lib/crewai/src/crewai/tools/base_tool.py

@@ -18,6 +18,7 @@ from pydantic import (
     BaseModel as PydanticBaseModel,
     ConfigDict,
     Field,
+    ValidationError,
     create_model,
     field_validator,
 )
@@ -150,14 +151,37 @@ class BaseTool(BaseModel, ABC):
 
         super().model_post_init(__context)
 
+    def _validate_kwargs(self, kwargs: dict[str, Any]) -> dict[str, Any]:
+        """Validate keyword arguments against args_schema if present.
+
+        Args:
+            kwargs: The keyword arguments to validate.
+
+        Returns:
+            Validated (and possibly coerced) keyword arguments.
+
+        Raises:
+            ValueError: If validation against args_schema fails.
+        """
+        if kwargs and self.args_schema is not None and self.args_schema.model_fields:
+            try:
+                validated = self.args_schema.model_validate(kwargs)
+                return validated.model_dump()
+            except Exception as e:
+                raise ValueError(
+                    f"Tool '{self.name}' arguments validation failed: {e}"
+                ) from e
+        return kwargs
+
     def run(
         self,
         *args: Any,
         **kwargs: Any,
     ) -> Any:
+        kwargs = self._validate_kwargs(kwargs)
+
         result = self._run(*args, **kwargs)
 
-        # If _run is async, we safely run it
         if asyncio.iscoroutine(result):
             result = asyncio.run(result)
 
@@ -179,6 +203,7 @@ class BaseTool(BaseModel, ABC):
         Returns:
             The result of the tool execution.
         """
+        kwargs = self._validate_kwargs(kwargs)
         result = await self._arun(*args, **kwargs)
         self.current_usage_count += 1
         return result
@@ -331,6 +356,8 @@ class Tool(BaseTool, Generic[P, R]):
         Returns:
             The result of the tool execution.
         """
+        kwargs = self._validate_kwargs(kwargs)
+
         result = self.func(*args, **kwargs)
 
         if asyncio.iscoroutine(result):
@@ -361,6 +388,7 @@ class Tool(BaseTool, Generic[P, R]):
         Returns:
             The result of the tool execution.
         """
+        kwargs = self._validate_kwargs(kwargs)
         result = await self._arun(*args, **kwargs)
         self.current_usage_count += 1
         return result

lib/crewai/src/crewai/utilities/agent_utils.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 import asyncio
 from collections.abc import Callable, Sequence
 import concurrent.futures
+import inspect
 import json
 import re
 from typing import TYPE_CHECKING, Any, Final, Literal, TypedDict
@@ -167,7 +168,9 @@ def convert_tools_to_openai_schema(
         parameters: dict[str, Any] = {}
         if hasattr(tool, "args_schema") and tool.args_schema is not None:
             try:
-                schema_output = generate_model_description(tool.args_schema)
+                schema_output = generate_model_description(
+                    tool.args_schema, strip_null_types=False
+                )
                 parameters = schema_output.get("json_schema", {}).get("schema", {})
                 # Remove title and description from schema root as they're redundant
                 parameters.pop("title", None)
@@ -501,7 +504,9 @@ def handle_agent_action_core(
         - TODO: Remove messages parameter and its usage.
     """
     if step_callback:
-        step_callback(tool_result)
+        cb_result = step_callback(tool_result)
+        if inspect.iscoroutine(cb_result):
+            asyncio.run(cb_result)
 
     formatted_answer.text += f"\nObservation: {tool_result.result}"
     formatted_answer.result = tool_result.result
@@ -1143,6 +1148,36 @@ def extract_tool_call_info(
     return None
 
 
+def parse_tool_call_args(
+    func_args: dict[str, Any] | str,
+    func_name: str,
+    call_id: str,
+    original_tool: Any = None,
+) -> tuple[dict[str, Any], None] | tuple[None, dict[str, Any]]:
+    """Parse tool call arguments from a JSON string or dict.
+
+    Returns:
+        ``(args_dict, None)`` on success, or ``(None, error_result)`` on
+        JSON parse failure where ``error_result`` is a ready-to-return dict
+        with the same shape as ``_execute_single_native_tool_call`` return values.
+    """
+    if isinstance(func_args, str):
+        try:
+            return json.loads(func_args), None
+        except json.JSONDecodeError as e:
+            return None, {
+                "call_id": call_id,
+                "func_name": func_name,
+                "result": (
+                    f"Error: Failed to parse tool arguments as JSON: {e}. "
+                    f"Please provide valid JSON arguments for the '{func_name}' tool."
+                ),
+                "from_cache": False,
+                "original_tool": original_tool,
+            }
+    return func_args, None
+
+
 def _setup_before_llm_call_hooks(
     executor_context: CrewAgentExecutor | AgentExecutor | LiteAgent | None,
     printer: Printer,

lib/crewai/src/crewai/utilities/llm_utils.py

@@ -69,7 +69,7 @@ def create_llm(
 UNACCEPTED_ATTRIBUTES: Final[list[str]] = [
     "AWS_ACCESS_KEY_ID",
     "AWS_SECRET_ACCESS_KEY",
-    "AWS_REGION_NAME",
+    "AWS_DEFAULT_REGION",
 ]
 
 
@@ -146,7 +146,7 @@ def _llm_via_environment_or_fallback() -> LLM | None:
     unaccepted_attributes = [
         "AWS_ACCESS_KEY_ID",
         "AWS_SECRET_ACCESS_KEY",
-        "AWS_REGION_NAME",
+        "AWS_DEFAULT_REGION",
     ]
     set_provider = model_name.partition("/")[0] if "/" in model_name else "openai"
 

lib/crewai/src/crewai/utilities/pydantic_schema_utils.py

@@ -417,7 +417,40 @@ def strip_null_from_types(schema: dict[str, Any]) -> dict[str, Any]:
     return schema
 
 
-def generate_model_description(model: type[BaseModel]) -> ModelDescription:
+def strip_openai_specific_schema_fields(schema: dict[str, Any]) -> dict[str, Any]:
+    """Remove OpenAI strict-mode fields that are incompatible with other providers.
+
+    OpenAI strict mode requires ``additionalProperties: false`` on every object
+    and all properties listed in ``required``.  Gemini and Bedrock reject these
+    fields with schema validation errors, so we strip them before handing off to
+    non-OpenAI providers.
+
+    Specifically removes (recursively):
+    - ``additionalProperties`` — not supported by Gemini / Bedrock tool schemas
+
+    Args:
+        schema: JSON schema dictionary (mutated in place and returned).
+
+    Returns:
+        The modified schema.
+    """
+    if isinstance(schema, dict):
+        schema.pop("additionalProperties", None)
+        for value in schema.values():
+            if isinstance(value, dict):
+                strip_openai_specific_schema_fields(value)
+            elif isinstance(value, list):
+                for item in value:
+                    if isinstance(item, dict):
+                        strip_openai_specific_schema_fields(item)
+    return schema
+
+
+def generate_model_description(
+    model: type[BaseModel],
+    *,
+    strip_null_types: bool = True,
+) -> ModelDescription:
     """Generate JSON schema description of a Pydantic model.
 
     This function takes a Pydantic model class and returns its JSON schema,
@@ -426,6 +459,9 @@ def generate_model_description(model: type[BaseModel]) -> ModelDescription:
 
     Args:
         model: A Pydantic model class.
+        strip_null_types: When ``True`` (default), remove ``null`` from
+            ``anyOf`` / ``type`` arrays.  Set to ``False`` to allow sending ``null`` for
+            optional fields.
 
     Returns:
         A ModelDescription with JSON schema representation of the model.
@@ -442,7 +478,9 @@ def generate_model_description(model: type[BaseModel]) -> ModelDescription:
     json_schema = fix_discriminator_mappings(json_schema)
     json_schema = convert_oneof_to_anyof(json_schema)
     json_schema = ensure_all_properties_required(json_schema)
-    json_schema = strip_null_from_types(json_schema)
+
+    if strip_null_types:
+        json_schema = strip_null_from_types(json_schema)
 
     return {
         "type": "json_schema",

lib/crewai/tests/agents/test_agent_executor.py

@@ -4,6 +4,7 @@ Tests the Flow-based agent executor implementation including state management,
 flow methods, routing logic, and error handling.
 """
 
+import time
 from unittest.mock import Mock, patch
 
 import pytest
@@ -462,3 +463,176 @@ class TestFlowInvoke:
 
         assert result == {"output": "Done"}
         assert len(executor.state.messages) >= 2
+
+
+class TestNativeToolExecution:
+    """Test native tool execution behavior."""
+
+    @pytest.fixture
+    def mock_dependencies(self):
+        llm = Mock()
+        llm.supports_stop_words.return_value = True
+
+        task = Mock()
+        task.name = "Test Task"
+        task.description = "Test"
+        task.human_input = False
+        task.response_model = None
+
+        crew = Mock()
+        crew._memory = None
+        crew.verbose = False
+        crew._train = False
+
+        agent = Mock()
+        agent.id = "test-agent-id"
+        agent.role = "Test Agent"
+        agent.verbose = False
+        agent.key = "test-key"
+
+        prompt = {"prompt": "Test {input} {tool_names} {tools}"}
+
+        tools_handler = Mock()
+        tools_handler.cache = None
+
+        return {
+            "llm": llm,
+            "task": task,
+            "crew": crew,
+            "agent": agent,
+            "prompt": prompt,
+            "max_iter": 10,
+            "tools": [],
+            "tools_names": "",
+            "stop_words": [],
+            "tools_description": "",
+            "tools_handler": tools_handler,
+        }
+
+    def test_execute_native_tool_runs_parallel_for_multiple_calls(
+        self, mock_dependencies
+    ):
+        executor = AgentExecutor(**mock_dependencies)
+
+        def slow_one() -> str:
+            time.sleep(0.2)
+            return "one"
+
+        def slow_two() -> str:
+            time.sleep(0.2)
+            return "two"
+
+        executor._available_functions = {"slow_one": slow_one, "slow_two": slow_two}
+        executor.state.pending_tool_calls = [
+            {
+                "id": "call_1",
+                "function": {"name": "slow_one", "arguments": "{}"},
+            },
+            {
+                "id": "call_2",
+                "function": {"name": "slow_two", "arguments": "{}"},
+            },
+        ]
+
+        started = time.perf_counter()
+        result = executor.execute_native_tool()
+        elapsed = time.perf_counter() - started
+
+        assert result == "native_tool_completed"
+        assert elapsed < 0.5
+        tool_messages = [m for m in executor.state.messages if m.get("role") == "tool"]
+        assert len(tool_messages) == 2
+        assert tool_messages[0]["tool_call_id"] == "call_1"
+        assert tool_messages[1]["tool_call_id"] == "call_2"
+
+    def test_execute_native_tool_falls_back_to_sequential_for_result_as_answer(
+        self, mock_dependencies
+    ):
+        executor = AgentExecutor(**mock_dependencies)
+
+        def slow_one() -> str:
+            time.sleep(0.2)
+            return "one"
+
+        def slow_two() -> str:
+            time.sleep(0.2)
+            return "two"
+
+        result_tool = Mock()
+        result_tool.name = "slow_one"
+        result_tool.result_as_answer = True
+        result_tool.max_usage_count = None
+        result_tool.current_usage_count = 0
+
+        executor.original_tools = [result_tool]
+        executor._available_functions = {"slow_one": slow_one, "slow_two": slow_two}
+        executor.state.pending_tool_calls = [
+            {
+                "id": "call_1",
+                "function": {"name": "slow_one", "arguments": "{}"},
+            },
+            {
+                "id": "call_2",
+                "function": {"name": "slow_two", "arguments": "{}"},
+            },
+        ]
+
+        started = time.perf_counter()
+        result = executor.execute_native_tool()
+        elapsed = time.perf_counter() - started
+
+        assert result == "tool_result_is_final"
+        assert elapsed >= 0.2
+        assert elapsed < 0.8
+        assert isinstance(executor.state.current_answer, AgentFinish)
+        assert executor.state.current_answer.output == "one"
+
+    def test_execute_native_tool_result_as_answer_short_circuits_remaining_calls(
+        self, mock_dependencies
+    ):
+        executor = AgentExecutor(**mock_dependencies)
+        call_counts = {"slow_one": 0, "slow_two": 0}
+
+        def slow_one() -> str:
+            call_counts["slow_one"] += 1
+            time.sleep(0.2)
+            return "one"
+
+        def slow_two() -> str:
+            call_counts["slow_two"] += 1
+            time.sleep(0.2)
+            return "two"
+
+        result_tool = Mock()
+        result_tool.name = "slow_one"
+        result_tool.result_as_answer = True
+        result_tool.max_usage_count = None
+        result_tool.current_usage_count = 0
+
+        executor.original_tools = [result_tool]
+        executor._available_functions = {"slow_one": slow_one, "slow_two": slow_two}
+        executor.state.pending_tool_calls = [
+            {
+                "id": "call_1",
+                "function": {"name": "slow_one", "arguments": "{}"},
+            },
+            {
+                "id": "call_2",
+                "function": {"name": "slow_two", "arguments": "{}"},
+            },
+        ]
+
+        started = time.perf_counter()
+        result = executor.execute_native_tool()
+        elapsed = time.perf_counter() - started
+
+        assert result == "tool_result_is_final"
+        assert isinstance(executor.state.current_answer, AgentFinish)
+        assert executor.state.current_answer.output == "one"
+        assert call_counts["slow_one"] == 1
+        assert call_counts["slow_two"] == 0
+        assert elapsed < 0.5
+
+        tool_messages = [m for m in executor.state.messages if m.get("role") == "tool"]
+        assert len(tool_messages) == 1
+        assert tool_messages[0]["tool_call_id"] == "call_1"

lib/crewai/tests/agents/test_async_agent_executor.py

@@ -2,7 +2,7 @@
 
 import asyncio
 from typing import Any
-from unittest.mock import AsyncMock, MagicMock, patch
+from unittest.mock import AsyncMock, MagicMock, Mock, patch
 
 import pytest
 
@@ -291,6 +291,46 @@ class TestAsyncAgentExecutor:
         assert max_concurrent > 1, f"Expected concurrent execution, max concurrent was {max_concurrent}"
 
 
+class TestInvokeStepCallback:
+    """Tests for _invoke_step_callback with sync and async callbacks."""
+
+    def test_invoke_step_callback_with_sync_callback(
+        self, executor: CrewAgentExecutor
+    ) -> None:
+        """Test that a sync step callback is called normally."""
+        callback = Mock()
+        executor.step_callback = callback
+        answer = AgentFinish(thought="thinking", output="test", text="final")
+
+        executor._invoke_step_callback(answer)
+
+        callback.assert_called_once_with(answer)
+
+    def test_invoke_step_callback_with_async_callback(
+        self, executor: CrewAgentExecutor
+    ) -> None:
+        """Test that an async step callback is awaited via asyncio.run."""
+        async_callback = AsyncMock()
+        executor.step_callback = async_callback
+        answer = AgentFinish(thought="thinking", output="test", text="final")
+
+        with patch("crewai.agents.crew_agent_executor.asyncio.run") as mock_run:
+            executor._invoke_step_callback(answer)
+
+            async_callback.assert_called_once_with(answer)
+            mock_run.assert_called_once()
+
+    def test_invoke_step_callback_with_none(
+        self, executor: CrewAgentExecutor
+    ) -> None:
+        """Test that no error is raised when step_callback is None."""
+        executor.step_callback = None
+        answer = AgentFinish(thought="thinking", output="test", text="final")
+
+        # Should not raise
+        executor._invoke_step_callback(answer)
+
+
 class TestAsyncLLMResponseHelper:
     """Tests for aget_llm_response helper function."""
 

lib/crewai/tests/agents/test_native_tool_calling.py

@@ -6,13 +6,20 @@ when the LLM supports it, across multiple providers.
 
 from __future__ import annotations
 
+from collections.abc import Generator
 import os
-from unittest.mock import patch
+import threading
+import time
+from collections import Counter
+from unittest.mock import Mock, patch
 
 import pytest
 from pydantic import BaseModel, Field
 
 from crewai import Agent, Crew, Task
+from crewai.events import crewai_event_bus
+from crewai.hooks import register_after_tool_call_hook, register_before_tool_call_hook
+from crewai.hooks.tool_hooks import ToolCallHookContext
 from crewai.llm import LLM
 from crewai.tools.base_tool import BaseTool
 
@@ -64,6 +71,73 @@ class FailingTool(BaseTool):
     def _run(self) -> str:
         raise Exception("This tool always fails")
 
+
+class LocalSearchInput(BaseModel):
+    query: str = Field(description="Search query")
+
+
+class ParallelProbe:
+    """Thread-safe in-memory recorder for tool execution windows."""
+
+    _lock = threading.Lock()
+    _windows: list[tuple[str, float, float]] = []
+
+    @classmethod
+    def reset(cls) -> None:
+        with cls._lock:
+            cls._windows = []
+
+    @classmethod
+    def record(cls, tool_name: str, start: float, end: float) -> None:
+        with cls._lock:
+            cls._windows.append((tool_name, start, end))
+
+    @classmethod
+    def windows(cls) -> list[tuple[str, float, float]]:
+        with cls._lock:
+            return list(cls._windows)
+
+
+def _parallel_prompt() -> str:
+    return (
+        "This is a tool-calling compliance test. "
+        "In your next assistant turn, emit exactly 3 tool calls in the same response (parallel tool calls), in this order: "
+        "1) parallel_local_search_one(query='latest OpenAI model release notes'), "
+        "2) parallel_local_search_two(query='latest Anthropic model release notes'), "
+        "3) parallel_local_search_three(query='latest Gemini model release notes'). "
+        "Do not call any other tools and do not answer before those 3 tool calls are emitted. "
+        "After the tool results return, provide a one paragraph summary."
+    )
+
+
+def _max_concurrency(windows: list[tuple[str, float, float]]) -> int:
+    points: list[tuple[float, int]] = []
+    for _, start, end in windows:
+        points.append((start, 1))
+        points.append((end, -1))
+    points.sort(key=lambda p: (p[0], p[1]))
+
+    current = 0
+    maximum = 0
+    for _, delta in points:
+        current += delta
+        if current > maximum:
+            maximum = current
+    return maximum
+
+
+def _assert_tools_overlapped() -> None:
+    windows = ParallelProbe.windows()
+    local_windows = [
+        w
+        for w in windows
+        if w[0].startswith("parallel_local_search_")
+    ]
+
+    assert len(local_windows) >= 3, f"Expected at least 3 local tool calls, got {len(local_windows)}"
+    assert _max_concurrency(local_windows) >= 2, "Expected overlapping local tool executions"
+
+
 @pytest.fixture
 def calculator_tool() -> CalculatorTool:
     """Create a calculator tool for testing."""
@@ -82,6 +156,65 @@ def failing_tool() -> BaseTool:
 
     )
 
+
+@pytest.fixture
+def parallel_tools() -> list[BaseTool]:
+    """Create local tools used to verify native parallel execution deterministically."""
+
+    class ParallelLocalSearchOne(BaseTool):
+        name: str = "parallel_local_search_one"
+        description: str = "Local search tool #1 for concurrency testing."
+        args_schema: type[BaseModel] = LocalSearchInput
+
+        def _run(self, query: str) -> str:
+            start = time.perf_counter()
+            time.sleep(1.0)
+            end = time.perf_counter()
+            ParallelProbe.record(self.name, start, end)
+            return f"[one] {query}"
+
+    class ParallelLocalSearchTwo(BaseTool):
+        name: str = "parallel_local_search_two"
+        description: str = "Local search tool #2 for concurrency testing."
+        args_schema: type[BaseModel] = LocalSearchInput
+
+        def _run(self, query: str) -> str:
+            start = time.perf_counter()
+            time.sleep(1.0)
+            end = time.perf_counter()
+            ParallelProbe.record(self.name, start, end)
+            return f"[two] {query}"
+
+    class ParallelLocalSearchThree(BaseTool):
+        name: str = "parallel_local_search_three"
+        description: str = "Local search tool #3 for concurrency testing."
+        args_schema: type[BaseModel] = LocalSearchInput
+
+        def _run(self, query: str) -> str:
+            start = time.perf_counter()
+            time.sleep(1.0)
+            end = time.perf_counter()
+            ParallelProbe.record(self.name, start, end)
+            return f"[three] {query}"
+
+    return [
+        ParallelLocalSearchOne(),
+        ParallelLocalSearchTwo(),
+        ParallelLocalSearchThree(),
+    ]
+
+
+def _attach_parallel_probe_handler() -> None:
+    @crewai_event_bus.on(ToolUsageFinishedEvent)
+    def _capture_tool_window(_source, event: ToolUsageFinishedEvent):
+        if not event.tool_name.startswith("parallel_local_search_"):
+            return
+        ParallelProbe.record(
+            event.tool_name,
+            event.started_at.timestamp(),
+            event.finished_at.timestamp(),
+        )
+
 # =============================================================================
 # OpenAI Provider Tests
 # =============================================================================
@@ -122,7 +255,7 @@ class TestOpenAINativeToolCalling:
         self, calculator_tool: CalculatorTool
     ) -> None:
         """Test OpenAI agent kickoff with mocked LLM call."""
-        llm = LLM(model="gpt-4o-mini")
+        llm = LLM(model="gpt-5-nano")
 
         with patch.object(llm, "call", return_value="The answer is 120.") as mock_call:
             agent = Agent(
@@ -146,6 +279,174 @@ class TestOpenAINativeToolCalling:
             assert mock_call.called
             assert result is not None
 
+    @pytest.mark.vcr()
+    @pytest.mark.timeout(180)
+    def test_openai_parallel_native_tool_calling_test_crew(
+        self, parallel_tools: list[BaseTool]
+    ) -> None:
+        agent = Agent(
+            role="Parallel Tool Agent",
+            goal="Use both tools exactly as instructed",
+            backstory="You follow tool instructions precisely.",
+            tools=parallel_tools,
+            llm=LLM(model="gpt-5-nano", temperature=1),
+            verbose=False,
+            max_iter=3,
+        )
+        task = Task(
+            description=_parallel_prompt(),
+            expected_output="A one sentence summary of both tool outputs",
+            agent=agent,
+        )
+        crew = Crew(agents=[agent], tasks=[task])
+        result = crew.kickoff()
+        assert result is not None
+        _assert_tools_overlapped()
+
+    @pytest.mark.vcr()
+    @pytest.mark.timeout(180)
+    def test_openai_parallel_native_tool_calling_test_agent_kickoff(
+        self, parallel_tools: list[BaseTool]
+    ) -> None:
+        agent = Agent(
+            role="Parallel Tool Agent",
+            goal="Use both tools exactly as instructed",
+            backstory="You follow tool instructions precisely.",
+            tools=parallel_tools,
+            llm=LLM(model="gpt-4o-mini"),
+            verbose=False,
+            max_iter=3,
+        )
+        result = agent.kickoff(_parallel_prompt())
+        assert result is not None
+        _assert_tools_overlapped()
+
+    @pytest.mark.vcr()
+    @pytest.mark.timeout(180)
+    def test_openai_parallel_native_tool_calling_tool_hook_parity_crew(
+        self, parallel_tools: list[BaseTool]
+    ) -> None:
+        hook_calls: dict[str, list[dict[str, str]]] = {"before": [], "after": []}
+
+        def before_hook(context: ToolCallHookContext) -> bool | None:
+            if context.tool_name.startswith("parallel_local_search_"):
+                hook_calls["before"].append(
+                    {
+                        "tool_name": context.tool_name,
+                        "query": str(context.tool_input.get("query", "")),
+                    }
+                )
+            return None
+
+        def after_hook(context: ToolCallHookContext) -> str | None:
+            if context.tool_name.startswith("parallel_local_search_"):
+                hook_calls["after"].append(
+                    {
+                        "tool_name": context.tool_name,
+                        "query": str(context.tool_input.get("query", "")),
+                    }
+                )
+            return None
+
+        register_before_tool_call_hook(before_hook)
+        register_after_tool_call_hook(after_hook)
+
+        try:
+            agent = Agent(
+                role="Parallel Tool Agent",
+                goal="Use both tools exactly as instructed",
+                backstory="You follow tool instructions precisely.",
+                tools=parallel_tools,
+                llm=LLM(model="gpt-5-nano", temperature=1),
+                verbose=False,
+                max_iter=3,
+            )
+            task = Task(
+                description=_parallel_prompt(),
+                expected_output="A one sentence summary of both tool outputs",
+                agent=agent,
+            )
+            crew = Crew(agents=[agent], tasks=[task])
+            result = crew.kickoff()
+
+            assert result is not None
+            _assert_tools_overlapped()
+
+            before_names = [call["tool_name"] for call in hook_calls["before"]]
+            after_names = [call["tool_name"] for call in hook_calls["after"]]
+            assert len(before_names) >= 3, "Expected before hooks for all parallel calls"
+            assert Counter(before_names) == Counter(after_names)
+            assert all(call["query"] for call in hook_calls["before"])
+            assert all(call["query"] for call in hook_calls["after"])
+        finally:
+            from crewai.hooks import (
+                unregister_after_tool_call_hook,
+                unregister_before_tool_call_hook,
+            )
+
+            unregister_before_tool_call_hook(before_hook)
+            unregister_after_tool_call_hook(after_hook)
+
+    @pytest.mark.vcr()
+    @pytest.mark.timeout(180)
+    def test_openai_parallel_native_tool_calling_tool_hook_parity_agent_kickoff(
+        self, parallel_tools: list[BaseTool]
+    ) -> None:
+        hook_calls: dict[str, list[dict[str, str]]] = {"before": [], "after": []}
+
+        def before_hook(context: ToolCallHookContext) -> bool | None:
+            if context.tool_name.startswith("parallel_local_search_"):
+                hook_calls["before"].append(
+                    {
+                        "tool_name": context.tool_name,
+                        "query": str(context.tool_input.get("query", "")),
+                    }
+                )
+            return None
+
+        def after_hook(context: ToolCallHookContext) -> str | None:
+            if context.tool_name.startswith("parallel_local_search_"):
+                hook_calls["after"].append(
+                    {
+                        "tool_name": context.tool_name,
+                        "query": str(context.tool_input.get("query", "")),
+                    }
+                )
+            return None
+
+        register_before_tool_call_hook(before_hook)
+        register_after_tool_call_hook(after_hook)
+
+        try:
+            agent = Agent(
+                role="Parallel Tool Agent",
+                goal="Use both tools exactly as instructed",
+                backstory="You follow tool instructions precisely.",
+                tools=parallel_tools,
+                llm=LLM(model="gpt-5-nano", temperature=1),
+                verbose=False,
+                max_iter=3,
+            )
+            result = agent.kickoff(_parallel_prompt())
+
+            assert result is not None
+            _assert_tools_overlapped()
+
+            before_names = [call["tool_name"] for call in hook_calls["before"]]
+            after_names = [call["tool_name"] for call in hook_calls["after"]]
+            assert len(before_names) >= 3, "Expected before hooks for all parallel calls"
+            assert Counter(before_names) == Counter(after_names)
+            assert all(call["query"] for call in hook_calls["before"])
+            assert all(call["query"] for call in hook_calls["after"])
+        finally:
+            from crewai.hooks import (
+                unregister_after_tool_call_hook,
+                unregister_before_tool_call_hook,
+            )
+
+            unregister_before_tool_call_hook(before_hook)
+            unregister_after_tool_call_hook(after_hook)
+
 
 # =============================================================================
 # Anthropic Provider Tests
@@ -217,6 +518,79 @@ class TestAnthropicNativeToolCalling:
             assert mock_call.called
             assert result is not None
 
+    @pytest.mark.vcr()
+    def test_anthropic_parallel_native_tool_calling_test_crew(
+        self, parallel_tools: list[BaseTool]
+    ) -> None:
+        agent = Agent(
+            role="Parallel Tool Agent",
+            goal="Use both tools exactly as instructed",
+            backstory="You follow tool instructions precisely.",
+            tools=parallel_tools,
+            llm=LLM(model="anthropic/claude-sonnet-4-6"),
+            verbose=False,
+            max_iter=3,
+        )
+        task = Task(
+            description=_parallel_prompt(),
+            expected_output="A one sentence summary of both tool outputs",
+            agent=agent,
+        )
+        crew = Crew(agents=[agent], tasks=[task])
+        result = crew.kickoff()
+        assert result is not None
+        _assert_tools_overlapped()
+
+    @pytest.mark.vcr()
+    def test_anthropic_parallel_native_tool_calling_test_agent_kickoff(
+        self, parallel_tools: list[BaseTool]
+    ) -> None:
+        agent = Agent(
+            role="Parallel Tool Agent",
+            goal="Use both tools exactly as instructed",
+            backstory="You follow tool instructions precisely.",
+            tools=parallel_tools,
+            llm=LLM(model="anthropic/claude-sonnet-4-6"),
+            verbose=False,
+            max_iter=3,
+        )
+        result = agent.kickoff(_parallel_prompt())
+        assert result is not None
+        _assert_tools_overlapped()
+
+
+_MCP_OPTIONAL_FIELDS_TOOL_DEFS = [
+    {
+        "name": "filtered_search",
+        "description": (
+            "Search a knowledge base. Pass null for any filter you don't need."
+        ),
+        "inputSchema": {
+            "type": "object",
+            "properties": {
+                "query": {
+                    "type": "string",
+                    "description": "Search query string",
+                },
+                "filter_type": {
+                    "anyOf": [
+                        {"type": "string", "enum": ["news", "blog", "docs"]},
+                        {"type": "null"},
+                    ],
+                    "default": None,
+                    "description": "Optional content-type filter",
+                },
+                "page_id": {
+                    "anyOf": [{"type": "string"}, {"type": "null"}],
+                    "default": None,
+                    "description": "Optional page UUID",
+                },
+            },
+            "required": ["query"],
+        },
+    }
+]
+
 
 # =============================================================================
 # Google/Gemini Provider Tests
@@ -247,7 +621,7 @@ class TestGeminiNativeToolCalling:
             goal="Help users with mathematical calculations",
             backstory="You are a helpful math assistant.",
             tools=[calculator_tool],
-            llm=LLM(model="gemini/gemini-2.0-flash-exp"),
+            llm=LLM(model="gemini/gemini-2.5-flash"),
         )
 
         task = Task(
@@ -266,7 +640,7 @@ class TestGeminiNativeToolCalling:
         self, calculator_tool: CalculatorTool
     ) -> None:
         """Test Gemini agent kickoff with mocked LLM call."""
-        llm = LLM(model="gemini/gemini-2.0-flash-001")
+        llm = LLM(model="gemini/gemini-2.5-flash")
 
         with patch.object(llm, "call", return_value="The answer is 120.") as mock_call:
             agent = Agent(
@@ -290,6 +664,46 @@ class TestGeminiNativeToolCalling:
             assert mock_call.called
             assert result is not None
 
+    @pytest.mark.vcr()
+    def test_gemini_parallel_native_tool_calling_test_crew(
+        self, parallel_tools: list[BaseTool]
+    ) -> None:
+        agent = Agent(
+            role="Parallel Tool Agent",
+            goal="Use both tools exactly as instructed",
+            backstory="You follow tool instructions precisely.",
+            tools=parallel_tools,
+            llm=LLM(model="gemini/gemini-2.5-flash"),
+            verbose=False,
+            max_iter=3,
+        )
+        task = Task(
+            description=_parallel_prompt(),
+            expected_output="A one sentence summary of both tool outputs",
+            agent=agent,
+        )
+        crew = Crew(agents=[agent], tasks=[task])
+        result = crew.kickoff()
+        assert result is not None
+        _assert_tools_overlapped()
+
+    @pytest.mark.vcr()
+    def test_gemini_parallel_native_tool_calling_test_agent_kickoff(
+        self, parallel_tools: list[BaseTool]
+    ) -> None:
+        agent = Agent(
+            role="Parallel Tool Agent",
+            goal="Use both tools exactly as instructed",
+            backstory="You follow tool instructions precisely.",
+            tools=parallel_tools,
+            llm=LLM(model="gemini/gemini-2.5-flash"),
+            verbose=False,
+            max_iter=3,
+        )
+        result = agent.kickoff(_parallel_prompt())
+        assert result is not None
+        _assert_tools_overlapped()
+
 
 # =============================================================================
 # Azure Provider Tests
@@ -324,7 +738,7 @@ class TestAzureNativeToolCalling:
             goal="Help users with mathematical calculations",
             backstory="You are a helpful math assistant.",
             tools=[calculator_tool],
-            llm=LLM(model="azure/gpt-4o-mini"),
+            llm=LLM(model="azure/gpt-5-nano"),
             verbose=False,
             max_iter=3,
         )
@@ -347,7 +761,7 @@ class TestAzureNativeToolCalling:
     ) -> None:
         """Test Azure agent kickoff with mocked LLM call."""
         llm = LLM(
-            model="azure/gpt-4o-mini",
+            model="azure/gpt-5-nano",
             api_key="test-key",
             base_url="https://test.openai.azure.com",
         )
@@ -374,6 +788,49 @@ class TestAzureNativeToolCalling:
             assert mock_call.called
             assert result is not None
 
+    @pytest.mark.vcr()
+    def test_azure_parallel_native_tool_calling_test_crew(
+        self, parallel_tools: list[BaseTool]
+    ) -> None:
+        agent = Agent(
+            role="Parallel Tool Agent",
+            goal="Use both tools exactly as instructed",
+            backstory="You follow tool instructions precisely.",
+            tools=parallel_tools,
+            llm=LLM(model="azure/gpt-5-nano"),
+            verbose=False,
+            max_iter=3,
+        )
+        task = Task(
+            description=_parallel_prompt(),
+            expected_output="A one sentence summary of both tool outputs",
+            agent=agent,
+        )
+        crew = Crew(agents=[agent], tasks=[task])
+        result = crew.kickoff()
+        assert result is not None
+        _assert_tools_overlapped()
+
+    @pytest.mark.vcr()
+    def test_azure_parallel_native_tool_calling_test_agent_kickoff(
+        self, parallel_tools: list[BaseTool]
+    ) -> None:
+        agent = Agent(
+            role="Parallel Tool Agent",
+            goal="Use both tools exactly as instructed",
+            backstory="You follow tool instructions precisely.",
+            tools=parallel_tools,
+            llm=LLM(model="azure/gpt-5-nano"),
+            verbose=False,
+            max_iter=3,
+        )
+        result = agent.kickoff(_parallel_prompt())
+        assert result is not None
+        _assert_tools_overlapped()
+
+
+    
+
 
 # =============================================================================
 # Bedrock Provider Tests
@@ -384,18 +841,30 @@ class TestBedrockNativeToolCalling:
     """Tests for native tool calling with AWS Bedrock models."""
 
     @pytest.fixture(autouse=True)
-    def mock_aws_env(self):
-        """Mock AWS environment variables for tests."""
-        env_vars = {
-        "AWS_ACCESS_KEY_ID": "test-key",
-        "AWS_SECRET_ACCESS_KEY": "test-secret",
-        "AWS_REGION": "us-east-1",
-        }
-        if "AWS_ACCESS_KEY_ID" not in os.environ:
-            with patch.dict(os.environ, env_vars):
-                yield
-        else:
-            yield
+    def validate_bedrock_credentials_for_live_recording(self):
+        """Run Bedrock tests only when explicitly enabled."""
+        run_live_bedrock = os.getenv("RUN_BEDROCK_LIVE_TESTS", "false").lower() == "true"
+
+        if not run_live_bedrock:
+            pytest.skip(
+                "Skipping Bedrock tests by default. "
+                "Set RUN_BEDROCK_LIVE_TESTS=true with valid AWS credentials to enable."
+            )
+
+        access_key = os.getenv("AWS_ACCESS_KEY_ID", "")
+        secret_key = os.getenv("AWS_SECRET_ACCESS_KEY", "")
+        if (
+            not access_key
+            or not secret_key
+            or access_key.startswith(("fake-", "test-"))
+            or secret_key.startswith(("fake-", "test-"))
+        ):
+            pytest.skip(
+                "Skipping Bedrock tests: valid AWS credentials are required when "
+                "RUN_BEDROCK_LIVE_TESTS=true."
+            )
+
+        yield
 
     @pytest.mark.vcr()
     def test_bedrock_agent_kickoff_with_tools_mocked(
@@ -427,6 +896,46 @@ class TestBedrockNativeToolCalling:
         assert result.raw is not None
         assert "120" in str(result.raw)
 
+    @pytest.mark.vcr()
+    def test_bedrock_parallel_native_tool_calling_test_crew(
+        self, parallel_tools: list[BaseTool]
+    ) -> None:
+        agent = Agent(
+            role="Parallel Tool Agent",
+            goal="Use both tools exactly as instructed",
+            backstory="You follow tool instructions precisely.",
+            tools=parallel_tools,
+            llm=LLM(model="bedrock/anthropic.claude-3-haiku-20240307-v1:0"),
+            verbose=False,
+            max_iter=3,
+        )
+        task = Task(
+            description=_parallel_prompt(),
+            expected_output="A one sentence summary of both tool outputs",
+            agent=agent,
+        )
+        crew = Crew(agents=[agent], tasks=[task])
+        result = crew.kickoff()
+        assert result is not None
+        _assert_tools_overlapped()
+
+    @pytest.mark.vcr()
+    def test_bedrock_parallel_native_tool_calling_test_agent_kickoff(
+        self, parallel_tools: list[BaseTool]
+    ) -> None:
+        agent = Agent(
+            role="Parallel Tool Agent",
+            goal="Use both tools exactly as instructed",
+            backstory="You follow tool instructions precisely.",
+            tools=parallel_tools,
+            llm=LLM(model="bedrock/anthropic.claude-3-haiku-20240307-v1:0"),
+            verbose=False,
+            max_iter=3,
+        )
+        result = agent.kickoff(_parallel_prompt())
+        assert result is not None
+        _assert_tools_overlapped()
+
 
 # =============================================================================
 # Cross-Provider Native Tool Calling Behavior Tests
@@ -439,7 +948,7 @@ class TestNativeToolCallingBehavior:
     def test_supports_function_calling_check(self) -> None:
         """Test that supports_function_calling() is properly checked."""
         # OpenAI should support function calling
-        openai_llm = LLM(model="gpt-4o-mini")
+        openai_llm = LLM(model="gpt-5-nano")
         assert hasattr(openai_llm, "supports_function_calling")
         assert openai_llm.supports_function_calling() is True
 
@@ -456,6 +965,135 @@ class TestNativeToolCallingBehavior:
         assert hasattr(llm, "supports_function_calling")
         assert llm.supports_function_calling() is True
 
+    @pytest.mark.vcr()
+    def test_gemini_mcp_tool_with_optional_fields_no_schema_error(self) -> None:
+        """MCP tools with Optional fields must not cause Gemini schema validation errors.
+
+        Regression test for https://github.com/crewAIInc/crewAI/issues/4472.
+
+        Before the fix, generate_model_description() added additionalProperties:false
+        to the tool schema. Gemini rejects this field, raising:
+          "value at properties.<field> must be a list"
+
+        With the fix, strip_openai_specific_schema_fields() removes it before the
+        schema is sent to the Gemini API.
+
+        To record the cassette:
+            RUN_LIVE_GEMINI_TESTS=true GOOGLE_API_KEY=<key> \\
+            uv run pytest tests/agents/test_native_tool_calling.py \\
+                ::TestGeminiNativeToolCalling::test_gemini_mcp_tool_with_optional_fields_no_schema_error \\
+                --record-mode=once -v
+        """
+        from unittest.mock import AsyncMock, patch
+
+        from crewai.mcp.config import MCPServerStdio
+
+        stdio_config = MCPServerStdio(command="python", args=["fake_mcp_server.py"])
+
+        agent = Agent(
+            role="Knowledge Researcher",
+            goal="Search a knowledge base and return relevant results",
+            backstory="You are a helpful researcher who uses the filtered_search tool.",
+            mcps=[stdio_config],
+            llm=LLM(model="gemini/gemini-2.5-flash"),
+            verbose=False,
+            max_iter=3,
+        )
+
+        with patch("crewai.agent.core.MCPClient") as mock_client_class:
+            mock_client = AsyncMock()
+            mock_client.list_tools = AsyncMock(
+                return_value=_MCP_OPTIONAL_FIELDS_TOOL_DEFS
+            )
+            mock_client.connected = False
+            mock_client.connect = AsyncMock()
+            mock_client.disconnect = AsyncMock()
+            mock_client.call_tool = AsyncMock(
+                return_value="Search results: Introduction to agents, Tool integration guide"
+            )
+            mock_client_class.return_value = mock_client
+
+            task = Task(
+                description=(
+                    "Search the knowledge base for information about CrewAI agents. "
+                    "No filters needed — just a general search."
+                ),
+                expected_output="A brief summary of relevant search results.",
+                agent=agent,
+            )
+
+            crew = Crew(agents=[agent], tasks=[task])
+            result = crew.kickoff()
+
+        assert result is not None
+        assert result.raw is not None
+
+    @pytest.mark.vcr()
+    def test_bedrock_mcp_tool_with_optional_fields_no_schema_error(self) -> None:
+        """MCP tools with Optional fields must not cause Bedrock schema validation errors.
+
+        Regression test for https://github.com/crewAIInc/crewAI/issues/4472.
+
+        Before the fix, generate_model_description() added additionalProperties:false
+        to the tool schema. The Bedrock Converse API rejects this field, raising:
+          "JSON schema is invalid"
+
+        With the fix, strip_openai_specific_schema_fields() removes it before the
+        schema is sent to Bedrock.
+
+        Note: MCPClient is mocked — no Bedrock credentials are needed to run this
+        test. The LLM call is replayed from the VCR cassette.
+
+        To record the cassette:
+            AWS_ACCESS_KEY_ID=<key> AWS_SECRET_ACCESS_KEY=<secret> AWS_DEFAULT_REGION=us-east-1 \\
+            uv run pytest tests/agents/test_native_tool_calling.py \\
+                ::TestNativeToolCallingBehavior::test_bedrock_mcp_tool_with_optional_fields_no_schema_error \\
+                --record-mode=once -v
+        """
+        from unittest.mock import AsyncMock, patch
+
+        from crewai.mcp.config import MCPServerStdio
+
+        stdio_config = MCPServerStdio(command="python", args=["fake_mcp_server.py"])
+
+        agent = Agent(
+            role="Knowledge Researcher",
+            goal="Search a knowledge base and return relevant results",
+            backstory="You are a helpful researcher who uses the filtered_search tool.",
+            mcps=[stdio_config],
+            llm=LLM(model="bedrock/anthropic.claude-3-haiku-20240307-v1:0"),
+            verbose=False,
+            max_iter=3,
+        )
+
+        with patch("crewai.agent.core.MCPClient") as mock_client_class:
+            mock_client = AsyncMock()
+            mock_client.list_tools = AsyncMock(
+                return_value=_MCP_OPTIONAL_FIELDS_TOOL_DEFS
+            )
+            mock_client.connected = False
+            mock_client.connect = AsyncMock()
+            mock_client.disconnect = AsyncMock()
+            mock_client.call_tool = AsyncMock(
+                return_value="Search results: Introduction to agents, Tool integration guide"
+            )
+            mock_client_class.return_value = mock_client
+
+            task = Task(
+                description=(
+                    "Search the knowledge base for information about CrewAI agents. "
+                    "No filters needed — just a general search."
+                ),
+                expected_output="A brief summary of relevant search results.",
+                agent=agent,
+            )
+
+            crew = Crew(agents=[agent], tasks=[task])
+            result = crew.kickoff()
+
+        assert result is not None
+        assert result.raw is not None
+
 
 # =============================================================================
 # Token Usage Tests
@@ -475,7 +1113,7 @@ class TestNativeToolCallingTokenUsage:
             goal="Perform calculations efficiently",
             backstory="You calculate things.",
             tools=[calculator_tool],
-            llm=LLM(model="gpt-4o-mini"),
+            llm=LLM(model="gpt-5-nano"),
             verbose=False,
             max_iter=3,
         )
@@ -519,7 +1157,7 @@ def test_native_tool_calling_error_handling(failing_tool: FailingTool):
         goal="Perform calculations efficiently",
         backstory="You calculate things.",
         tools=[failing_tool],
-        llm=LLM(model="gpt-4o-mini"),
+        llm=LLM(model="gpt-5-nano"),
         verbose=False,
         max_iter=3,
     )
@@ -578,7 +1216,7 @@ class TestMaxUsageCountWithNativeToolCalling:
             goal="Call the counting tool multiple times",
             backstory="You are an agent that counts things.",
             tools=[tool],
-            llm=LLM(model="gpt-4o-mini"),
+            llm=LLM(model="gpt-5-nano"),
             verbose=False,
             max_iter=5,
         )
@@ -606,7 +1244,7 @@ class TestMaxUsageCountWithNativeToolCalling:
             goal="Use the counting tool as many times as requested",
             backstory="You are an agent that counts things. You must try to use the tool for each value requested.",
             tools=[tool],
-            llm=LLM(model="gpt-4o-mini"),
+            llm=LLM(model="gpt-5-nano"),
             verbose=False,
             max_iter=5,
         )
@@ -638,7 +1276,7 @@ class TestMaxUsageCountWithNativeToolCalling:
             goal="Use the counting tool exactly as requested",
             backstory="You are an agent that counts things precisely.",
             tools=[tool],
-            llm=LLM(model="gpt-4o-mini"),
+            llm=LLM(model="gpt-5-nano"),
             verbose=False,
             max_iter=5,
         )
@@ -653,5 +1291,153 @@ class TestMaxUsageCountWithNativeToolCalling:
         result = crew.kickoff()
 
         assert result is not None
-        # Verify usage count was incremented for each successful call
-        assert tool.current_usage_count == 2
+        # Verify the requested calls occurred while keeping usage bounded.
+        assert tool.current_usage_count >= 2
+        assert tool.current_usage_count <= tool.max_usage_count
+
+
+# =============================================================================
+# JSON Parse Error Handling Tests
+# =============================================================================
+
+
+class TestNativeToolCallingJsonParseError:
+    """Tests that malformed JSON tool arguments produce clear errors
+    instead of silently dropping all arguments."""
+
+    def _make_executor(self, tools: list[BaseTool]) -> "CrewAgentExecutor":
+        """Create a minimal CrewAgentExecutor with mocked dependencies."""
+        from crewai.agents.crew_agent_executor import CrewAgentExecutor
+        from crewai.tools.base_tool import to_langchain
+
+        structured_tools = to_langchain(tools)
+        mock_agent = Mock()
+        mock_agent.key = "test_agent"
+        mock_agent.role = "tester"
+        mock_agent.verbose = False
+        mock_agent.fingerprint = None
+        mock_agent.tools_results = []
+
+        mock_task = Mock()
+        mock_task.name = "test"
+        mock_task.description = "test"
+        mock_task.id = "test-id"
+
+        executor = object.__new__(CrewAgentExecutor)
+        executor.agent = mock_agent
+        executor.task = mock_task
+        executor.crew = Mock()
+        executor.tools = structured_tools
+        executor.original_tools = tools
+        executor.tools_handler = None
+        executor._printer = Mock()
+        executor.messages = []
+
+        return executor
+
+    def test_malformed_json_returns_parse_error(self) -> None:
+        """Malformed JSON args must return a descriptive error, not silently become {}."""
+
+        class CodeTool(BaseTool):
+            name: str = "execute_code"
+            description: str = "Run code"
+
+            def _run(self, code: str) -> str:
+                return f"ran: {code}"
+
+        tool = CodeTool()
+        executor = self._make_executor([tool])
+
+        from crewai.utilities.agent_utils import convert_tools_to_openai_schema
+        _, available_functions = convert_tools_to_openai_schema([tool])
+
+        malformed_json = '{"code": "print("hello")"}'
+
+        result = executor._execute_single_native_tool_call(
+            call_id="call_123",
+            func_name="execute_code",
+            func_args=malformed_json,
+            available_functions=available_functions,
+        )
+
+        assert "Failed to parse tool arguments as JSON" in result["result"]
+        assert tool.current_usage_count == 0
+
+    def test_valid_json_still_executes_normally(self) -> None:
+        """Valid JSON args should execute the tool as before."""
+
+        class CodeTool(BaseTool):
+            name: str = "execute_code"
+            description: str = "Run code"
+
+            def _run(self, code: str) -> str:
+                return f"ran: {code}"
+
+        tool = CodeTool()
+        executor = self._make_executor([tool])
+
+        from crewai.utilities.agent_utils import convert_tools_to_openai_schema
+        _, available_functions = convert_tools_to_openai_schema([tool])
+
+        valid_json = '{"code": "print(1)"}'
+
+        result = executor._execute_single_native_tool_call(
+            call_id="call_456",
+            func_name="execute_code",
+            func_args=valid_json,
+            available_functions=available_functions,
+        )
+
+        assert result["result"] == "ran: print(1)"
+
+    def test_dict_args_bypass_json_parsing(self) -> None:
+        """When func_args is already a dict, no JSON parsing occurs."""
+
+        class CodeTool(BaseTool):
+            name: str = "execute_code"
+            description: str = "Run code"
+
+            def _run(self, code: str) -> str:
+                return f"ran: {code}"
+
+        tool = CodeTool()
+        executor = self._make_executor([tool])
+
+        from crewai.utilities.agent_utils import convert_tools_to_openai_schema
+        _, available_functions = convert_tools_to_openai_schema([tool])
+
+        result = executor._execute_single_native_tool_call(
+            call_id="call_789",
+            func_name="execute_code",
+            func_args={"code": "x = 42"},
+            available_functions=available_functions,
+        )
+
+        assert result["result"] == "ran: x = 42"
+
+    def test_schema_validation_catches_missing_args_on_native_path(self) -> None:
+        """The native function calling path should now enforce args_schema,
+        catching missing required fields before _run is called."""
+
+        class StrictTool(BaseTool):
+            name: str = "strict_tool"
+            description: str = "A tool with required args"
+
+            def _run(self, code: str, language: str) -> str:
+                return f"{language}: {code}"
+
+        tool = StrictTool()
+        executor = self._make_executor([tool])
+
+        from crewai.utilities.agent_utils import convert_tools_to_openai_schema
+        _, available_functions = convert_tools_to_openai_schema([tool])
+
+        result = executor._execute_single_native_tool_call(
+            call_id="call_schema",
+            func_name="strict_tool",
+            func_args={"code": "print(1)"},
+            available_functions=available_functions,
+        )
+
+        assert "Error" in result["result"]
+        assert "validation failed" in result["result"].lower() or "missing" in result["result"].lower()

lib/crewai/tests/cassettes/agents/TestAnthropicNativeToolCalling.test_anthropic_parallel_native_tool_calling_test_agent_kickoff.yaml

@@ -0,0 +1,247 @@
+interactions:
+- request:
+    body: '{"max_tokens":4096,"messages":[{"role":"user","content":"\nCurrent Task:
+      This is a tool-calling compliance test. In your next assistant turn, emit exactly
+      3 tool calls in the same response (parallel tool calls), in this order: 1) parallel_local_search_one(query=''latest
+      OpenAI model release notes''), 2) parallel_local_search_two(query=''latest Anthropic
+      model release notes''), 3) parallel_local_search_three(query=''latest Gemini
+      model release notes''). Do not call any other tools and do not answer before
+      those 3 tool calls are emitted. After the tool results return, provide a one
+      paragraph summary."}],"model":"claude-sonnet-4-6","stop_sequences":["\nObservation:"],"stream":false,"system":"You
+      are Parallel Tool Agent. You follow tool instructions precisely.\nYour personal
+      goal is: Use both tools exactly as instructed","tools":[{"name":"parallel_local_search_one","description":"Local
+      search tool #1 for concurrency testing.","input_schema":{"properties":{"query":{"description":"Search
+      query","title":"Query","type":"string"}},"required":["query"],"type":"object","additionalProperties":false}},{"name":"parallel_local_search_two","description":"Local
+      search tool #2 for concurrency testing.","input_schema":{"properties":{"query":{"description":"Search
+      query","title":"Query","type":"string"}},"required":["query"],"type":"object","additionalProperties":false}},{"name":"parallel_local_search_three","description":"Local
+      search tool #3 for concurrency testing.","input_schema":{"properties":{"query":{"description":"Search
+      query","title":"Query","type":"string"}},"required":["query"],"type":"object","additionalProperties":false}}]}'
+    headers:
+      User-Agent:
+      - X-USER-AGENT-XXX
+      accept:
+      - application/json
+      accept-encoding:
+      - ACCEPT-ENCODING-XXX
+      anthropic-version:
+      - '2023-06-01'
+      connection:
+      - keep-alive
+      content-length:
+      - '1639'
+      content-type:
+      - application/json
+      host:
+      - api.anthropic.com
+      x-api-key:
+      - X-API-KEY-XXX
+      x-stainless-arch:
+      - X-STAINLESS-ARCH-XXX
+      x-stainless-async:
+      - 'false'
+      x-stainless-lang:
+      - python
+      x-stainless-os:
+      - X-STAINLESS-OS-XXX
+      x-stainless-package-version:
+      - 0.73.0
+      x-stainless-retry-count:
+      - '0'
+      x-stainless-runtime:
+      - CPython
+      x-stainless-runtime-version:
+      - 3.13.3
+      x-stainless-timeout:
+      - NOT_GIVEN
+    method: POST
+    uri: https://api.anthropic.com/v1/messages
+  response:
+    body:
+      string: '{"model":"claude-sonnet-4-6","id":"msg_01XeN1XTXZgmPyLMMGjivabb","type":"message","role":"assistant","content":[{"type":"text","text":"I''ll
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+    headers:
+      CF-RAY:
+      - CF-RAY-XXX
+      Connection:
+      - keep-alive
+      Content-Security-Policy:
+      - CSP-FILTERED
+      Content-Type:
+      - application/json
+      Date:
+      - Wed, 18 Feb 2026 23:54:43 GMT
+      Server:
+      - cloudflare
+      Transfer-Encoding:
+      - chunked
+      X-Robots-Tag:
+      - none
+      anthropic-organization-id:
+      - ANTHROPIC-ORGANIZATION-ID-XXX
+      anthropic-ratelimit-input-tokens-limit:
+      - ANTHROPIC-RATELIMIT-INPUT-TOKENS-LIMIT-XXX
+      anthropic-ratelimit-input-tokens-remaining:
+      - ANTHROPIC-RATELIMIT-INPUT-TOKENS-REMAINING-XXX
+      anthropic-ratelimit-input-tokens-reset:
+      - ANTHROPIC-RATELIMIT-INPUT-TOKENS-RESET-XXX
+      anthropic-ratelimit-output-tokens-limit:
+      - ANTHROPIC-RATELIMIT-OUTPUT-TOKENS-LIMIT-XXX
+      anthropic-ratelimit-output-tokens-remaining:
+      - ANTHROPIC-RATELIMIT-OUTPUT-TOKENS-REMAINING-XXX
+      anthropic-ratelimit-output-tokens-reset:
+      - ANTHROPIC-RATELIMIT-OUTPUT-TOKENS-RESET-XXX
+      anthropic-ratelimit-requests-limit:
+      - '20000'
+      anthropic-ratelimit-requests-remaining:
+      - '19999'
+      anthropic-ratelimit-requests-reset:
+      - '2026-02-18T23:54:41Z'
+      anthropic-ratelimit-tokens-limit:
+      - ANTHROPIC-RATELIMIT-TOKENS-LIMIT-XXX
+      anthropic-ratelimit-tokens-remaining:
+      - ANTHROPIC-RATELIMIT-TOKENS-REMAINING-XXX
+      anthropic-ratelimit-tokens-reset:
+      - ANTHROPIC-RATELIMIT-TOKENS-RESET-XXX
+      cf-cache-status:
+      - DYNAMIC
+      request-id:
+      - REQUEST-ID-XXX
+      strict-transport-security:
+      - STS-XXX
+      x-envoy-upstream-service-time:
+      - '2099'
+    status:
+      code: 200
+      message: OK
+- request:
+    body: '{"max_tokens":4096,"messages":[{"role":"user","content":"\nCurrent Task:
+      This is a tool-calling compliance test. In your next assistant turn, emit exactly
+      3 tool calls in the same response (parallel tool calls), in this order: 1) parallel_local_search_one(query=''latest
+      OpenAI model release notes''), 2) parallel_local_search_two(query=''latest Anthropic
+      model release notes''), 3) parallel_local_search_three(query=''latest Gemini
+      model release notes''). Do not call any other tools and do not answer before
+      those 3 tool calls are emitted. After the tool results return, provide a one
+      paragraph summary."},{"role":"assistant","content":[{"type":"tool_use","id":"toolu_01NwzvrxEz6tvT3A8ydvMtHu","name":"parallel_local_search_one","input":{"query":"latest
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+      latest Gemini model release notes"}]}],"model":"claude-sonnet-4-6","stop_sequences":["\nObservation:"],"stream":false,"system":"You
+      are Parallel Tool Agent. You follow tool instructions precisely.\nYour personal
+      goal is: Use both tools exactly as instructed","tools":[{"name":"parallel_local_search_one","description":"Local
+      search tool #1 for concurrency testing.","input_schema":{"properties":{"query":{"description":"Search
+      query","title":"Query","type":"string"}},"required":["query"],"type":"object","additionalProperties":false}},{"name":"parallel_local_search_two","description":"Local
+      search tool #2 for concurrency testing.","input_schema":{"properties":{"query":{"description":"Search
+      query","title":"Query","type":"string"}},"required":["query"],"type":"object","additionalProperties":false}},{"name":"parallel_local_search_three","description":"Local
+      search tool #3 for concurrency testing.","input_schema":{"properties":{"query":{"description":"Search
+      query","title":"Query","type":"string"}},"required":["query"],"type":"object","additionalProperties":false}}]}'
+    headers:
+      User-Agent:
+      - X-USER-AGENT-XXX
+      accept:
+      - application/json
+      accept-encoding:
+      - ACCEPT-ENCODING-XXX
+      anthropic-version:
+      - '2023-06-01'
+      connection:
+      - keep-alive
+      content-length:
+      - '2517'
+      content-type:
+      - application/json
+      host:
+      - api.anthropic.com
+      x-api-key:
+      - X-API-KEY-XXX
+      x-stainless-arch:
+      - X-STAINLESS-ARCH-XXX
+      x-stainless-async:
+      - 'false'
+      x-stainless-lang:
+      - python
+      x-stainless-os:
+      - X-STAINLESS-OS-XXX
+      x-stainless-package-version:
+      - 0.73.0
+      x-stainless-retry-count:
+      - '0'
+      x-stainless-runtime:
+      - CPython
+      x-stainless-runtime-version:
+      - 3.13.3
+      x-stainless-timeout:
+      - NOT_GIVEN
+    method: POST
+    uri: https://api.anthropic.com/v1/messages
+  response:
+    body:
+      string: "{\"model\":\"claude-sonnet-4-6\",\"id\":\"msg_01PFXqwwdwwHWadPdtNU5tUZ\",\"type\":\"message\",\"role\":\"assistant\",\"content\":[{\"type\":\"text\",\"text\":\"The
+        three parallel searches were executed successfully, each targeting the latest
+        release notes for the leading AI model families. The search results confirm
+        that queries were dispatched simultaneously to retrieve the most recent developments
+        from **OpenAI** (via tool one), **Anthropic** (via tool two), and **Google's
+        Gemini** (via tool three). While the local search tools returned placeholder
+        outputs in this test environment rather than detailed release notes, the structure
+        of the test validates that all three parallel tool calls were emitted correctly
+        and in the specified order \u2014 demonstrating proper concurrent tool-call
+        behavior with no dependencies between the three independent searches.\"}],\"stop_reason\":\"end_turn\",\"stop_sequence\":null,\"usage\":{\"input_tokens\":1197,\"cache_creation_input_tokens\":0,\"cache_read_input_tokens\":0,\"cache_creation\":{\"ephemeral_5m_input_tokens\":0,\"ephemeral_1h_input_tokens\":0},\"output_tokens\":131,\"service_tier\":\"standard\",\"inference_geo\":\"global\"}}"
+    headers:
+      CF-RAY:
+      - CF-RAY-XXX
+      Connection:
+      - keep-alive
+      Content-Security-Policy:
+      - CSP-FILTERED
+      Content-Type:
+      - application/json
+      Date:
+      - Wed, 18 Feb 2026 23:54:49 GMT
+      Server:
+      - cloudflare
+      Transfer-Encoding:
+      - chunked
+      X-Robots-Tag:
+      - none
+      anthropic-organization-id:
+      - ANTHROPIC-ORGANIZATION-ID-XXX
+      anthropic-ratelimit-input-tokens-limit:
+      - ANTHROPIC-RATELIMIT-INPUT-TOKENS-LIMIT-XXX
+      anthropic-ratelimit-input-tokens-remaining:
+      - ANTHROPIC-RATELIMIT-INPUT-TOKENS-REMAINING-XXX
+      anthropic-ratelimit-input-tokens-reset:
+      - ANTHROPIC-RATELIMIT-INPUT-TOKENS-RESET-XXX
+      anthropic-ratelimit-output-tokens-limit:
+      - ANTHROPIC-RATELIMIT-OUTPUT-TOKENS-LIMIT-XXX
+      anthropic-ratelimit-output-tokens-remaining:
+      - ANTHROPIC-RATELIMIT-OUTPUT-TOKENS-REMAINING-XXX
+      anthropic-ratelimit-output-tokens-reset:
+      - ANTHROPIC-RATELIMIT-OUTPUT-TOKENS-RESET-XXX
+      anthropic-ratelimit-requests-limit:
+      - '20000'
+      anthropic-ratelimit-requests-remaining:
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+      anthropic-ratelimit-requests-reset:
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+      anthropic-ratelimit-tokens-limit:
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+      anthropic-ratelimit-tokens-remaining:
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+      anthropic-ratelimit-tokens-reset:
+      - ANTHROPIC-RATELIMIT-TOKENS-RESET-XXX
+      cf-cache-status:
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+      request-id:
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+      strict-transport-security:
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+      message: OK
+version: 1

lib/crewai/tests/cassettes/agents/TestAnthropicNativeToolCalling.test_anthropic_parallel_native_tool_calling_test_crew.yaml

@@ -0,0 +1,254 @@
+interactions:
+- request:
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+      - '2026-02-18T23:54:49Z'
+      anthropic-ratelimit-tokens-limit:
+      - ANTHROPIC-RATELIMIT-TOKENS-LIMIT-XXX
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+      - ANTHROPIC-RATELIMIT-TOKENS-REMAINING-XXX
+      anthropic-ratelimit-tokens-reset:
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+      strict-transport-security:
+      - STS-XXX
+      x-envoy-upstream-service-time:
+      - '1967'
+    status:
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+      message: OK
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+    headers:
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+      accept:
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+      accept-encoding:
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+      - '2882'
+      content-type:
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+      x-api-key:
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+      x-stainless-timeout:
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+    method: POST
+    uri: https://api.anthropic.com/v1/messages
+  response:
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+      anthropic-ratelimit-input-tokens-reset:
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+      anthropic-ratelimit-output-tokens-limit:
+      - ANTHROPIC-RATELIMIT-OUTPUT-TOKENS-LIMIT-XXX
+      anthropic-ratelimit-output-tokens-remaining:
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+      anthropic-ratelimit-output-tokens-reset:
+      - ANTHROPIC-RATELIMIT-OUTPUT-TOKENS-RESET-XXX
+      anthropic-ratelimit-requests-limit:
+      - '20000'
+      anthropic-ratelimit-requests-remaining:
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+      anthropic-ratelimit-requests-reset:
+      - '2026-02-18T23:54:52Z'
+      anthropic-ratelimit-tokens-limit:
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+      anthropic-ratelimit-tokens-remaining:
+      - ANTHROPIC-RATELIMIT-TOKENS-REMAINING-XXX
+      anthropic-ratelimit-tokens-reset:
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+    status:
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+      message: OK
+version: 1

lib/crewai/tests/cassettes/agents/TestAzureNativeToolCalling.test_azure_agent_with_native_tool_calling.yaml

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lib/crewai/tests/cassettes/agents/TestAzureNativeToolCalling.test_azure_parallel_native_tool_calling_test_agent_kickoff.yaml

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lib/crewai/tests/cassettes/agents/TestAzureNativeToolCalling.test_azure_parallel_native_tool_calling_test_crew.yaml

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lib/crewai/tests/cassettes/agents/TestBedrockNativeToolCalling.test_bedrock_parallel_native_tool_calling_test_agent_kickoff.yaml

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lib/crewai/tests/cassettes/agents/TestBedrockNativeToolCalling.test_bedrock_parallel_native_tool_calling_test_crew.yaml

@@ -0,0 +1,226 @@
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lib/crewai/tests/cassettes/agents/TestGeminiNativeToolCalling.test_gemini_agent_with_native_tool_calling.yaml

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lib/crewai/tests/cassettes/agents/TestNativeToolCallingBehavior.test_bedrock_mcp_tool_with_optional_fields_no_schema_error.yaml

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lib/crewai/tests/cassettes/agents/TestNativeToolCallingBehavior.test_gemini_mcp_tool_with_optional_fields_no_schema_error.yaml

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lib/crewai/tests/cassettes/agents/TestOpenAINativeToolCalling.test_openai_parallel_native_tool_calling_test_crew.yaml

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       - OPENAI-PROJECT-XXX
       openai-version:
       - '2020-10-01'
-      x-envoy-upstream-service-time:
-      - '507'
+      set-cookie:
+      - SET-COOKIE-XXX
       x-openai-proxy-wasm:
       - v0.1
       x-ratelimit-limit-requests:
@@ -266,11 +126,7 @@ interactions:
     body: "{\"messages\":[{\"role\":\"system\",\"content\":\"You are Guardrail Agent.
       You are a expert at validating the output of a task. By providing effective
       feedback if the output is not valid.\\nYour personal goal is: Validate the output
-      of the task\\nTo give my best complete final answer to the task respond using
-      the exact following format:\\n\\nThought: I now can give a great answer\\nFinal
-      Answer: Your final answer must be the great and the most complete as possible,
-      it must be outcome described.\\n\\nI MUST use these formats, my job depends
-      on it!\"},{\"role\":\"user\",\"content\":\"\\nCurrent Task: \\n        Ensure
+      of the task\"},{\"role\":\"user\",\"content\":\"\\nCurrent Task: \\n        Ensure
       the following task result complies with the given guardrail.\\n\\n        Task
       result:\\n        \\n        Lorem Ipsum is simply dummy text of the printing
       and typesetting industry. Lorem Ipsum has been the industry's standard dummy
@@ -280,8 +136,9 @@ interactions:
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       part fails).\\n        - Focus only on identifying issues \u2014 do not propose
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-      tools available and give your best Final Answer, your job depends on it!\\n\\nThought:\"}],\"model\":\"gpt-4o\"}"
+      that is valid\\n        \\n\\nProvide your complete response:\"}],\"model\":\"gpt-4o\",\"response_format\":{\"type\":\"json_schema\",\"json_schema\":{\"schema\":{\"properties\":{\"valid\":{\"description\":\"Whether
+      the task output complies with the guardrail\",\"title\":\"Valid\",\"type\":\"boolean\"},\"feedback\":{\"anyOf\":[{\"type\":\"string\"},{\"type\":\"null\"}],\"description\":\"A
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     headers:
       User-Agent:
       - X-USER-AGENT-XXX
@@ -294,7 +151,7 @@ interactions:
       connection:
       - keep-alive
       content-length:
-      - '1468'
+      - '1568'
       content-type:
       - application/json
       host:
@@ -303,144 +160,6 @@ interactions:
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-    uri: https://api.openai.com/v1/chat/completions
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-      - OPENAI-PROJECT-XXX
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-      x-envoy-upstream-service-time:
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-      x-ratelimit-limit-requests:
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-      x-ratelimit-limit-tokens:
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-      x-ratelimit-remaining-requests:
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-      x-ratelimit-remaining-tokens:
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-      x-ratelimit-reset-requests:
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-      x-ratelimit-reset-tokens:
-      - X-RATELIMIT-RESET-TOKENS-XXX
-      x-request-id:
-      - X-REQUEST-ID-XXX
-    status:
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-      message: OK
-- request:
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-      Ensure the final output does not include any code block markers like ```json
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-      guardrail as it contains 22 words, which is less than the 500-word limit. Therefore,
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-    headers:
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-      - ACCEPT-ENCODING-XXX
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-      connection:
-      - keep-alive
-      content-length:
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-      content-type:
-      - application/json
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-      host:
-      - api.openai.com
-      x-stainless-arch:
-      - X-STAINLESS-ARCH-XXX
-      x-stainless-async:
-      - 'false'
       x-stainless-helper-method:
       - beta.chat.completions.parse
       x-stainless-lang:
@@ -456,22 +175,22 @@ interactions:
       x-stainless-runtime:
       - CPython
       x-stainless-runtime-version:
-      - 3.13.3
+      - 3.13.12
     method: POST
     uri: https://api.openai.com/v1/chat/completions
   response:
     body:
-      string: "{\n  \"id\": \"chatcmpl-Cy7yMAjNYSCz2foZPEcSVCuapzF8y\",\n  \"object\":
-        \"chat.completion\",\n  \"created\": 1768446362,\n  \"model\": \"gpt-4o-2024-08-06\",\n
+      string: "{\n  \"id\": \"chatcmpl-DDGAO7HbV6K3Iy0lQA058TOzTDoVa\",\n  \"object\":
+        \"chat.completion\",\n  \"created\": 1772052780,\n  \"model\": \"gpt-4o-2024-08-06\",\n
         \ \"choices\": [\n    {\n      \"index\": 0,\n      \"message\": {\n        \"role\":
         \"assistant\",\n        \"content\": \"{\\\"valid\\\":true,\\\"feedback\\\":null}\",\n
         \       \"refusal\": null,\n        \"annotations\": []\n      },\n      \"logprobs\":
         null,\n      \"finish_reason\": \"stop\"\n    }\n  ],\n  \"usage\": {\n    \"prompt_tokens\":
-        369,\n    \"completion_tokens\": 9,\n    \"total_tokens\": 378,\n    \"prompt_tokens_details\":
+        290,\n    \"completion_tokens\": 9,\n    \"total_tokens\": 299,\n    \"prompt_tokens_details\":
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         0,\n      \"rejected_prediction_tokens\": 0\n    }\n  },\n  \"service_tier\":
-        \"default\",\n  \"system_fingerprint\": \"fp_a0e9480a2f\"\n}\n"
+        \"default\",\n  \"system_fingerprint\": \"fp_1d6b4c17c3\"\n}\n"
     headers:
       CF-RAY:
       - CF-RAY-XXX
@@ -480,7 +199,7 @@ interactions:
       Content-Type:
       - application/json
       Date:
-      - Thu, 15 Jan 2026 03:06:03 GMT
+      - Wed, 25 Feb 2026 20:53:01 GMT
       Server:
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       Strict-Transport-Security:
@@ -495,18 +214,16 @@ interactions:
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       cf-cache-status:
       - DYNAMIC
-      content-length:
-      - '837'
       openai-organization:
       - OPENAI-ORG-XXX
       openai-processing-ms:
-      - '413'
+      - '386'
       openai-project:
       - OPENAI-PROJECT-XXX
       openai-version:
       - '2020-10-01'
-      x-envoy-upstream-service-time:
-      - '650'
+      set-cookie:
+      - SET-COOKIE-XXX
       x-openai-proxy-wasm:
       - v0.1
       x-ratelimit-limit-requests:

lib/crewai/tests/cli/authentication/test_auth_main.py

@@ -2,7 +2,7 @@ from datetime import datetime, timedelta
 from unittest.mock import MagicMock, call, patch
 
 import pytest
-import requests
+import httpx
 from crewai.cli.authentication.main import AuthenticationCommand
 from crewai.cli.constants import (
     CREWAI_ENTERPRISE_DEFAULT_OAUTH2_AUDIENCE,
@@ -220,7 +220,7 @@ class TestAuthenticationCommand:
         ]
         mock_console_print.assert_has_calls(expected_calls)
 
-    @patch("requests.post")
+    @patch("crewai.cli.authentication.main.httpx.post")
     def test_get_device_code(self, mock_post):
         mock_response = MagicMock()
         mock_response.json.return_value = {
@@ -256,7 +256,7 @@ class TestAuthenticationCommand:
             "verification_uri_complete": "https://example.com/auth",
         }
 
-    @patch("requests.post")
+    @patch("crewai.cli.authentication.main.httpx.post")
     @patch("crewai.cli.authentication.main.console.print")
     def test_poll_for_token_success(self, mock_console_print, mock_post):
         mock_response_success = MagicMock()
@@ -305,7 +305,7 @@ class TestAuthenticationCommand:
             ]
             mock_console_print.assert_has_calls(expected_calls)
 
-    @patch("requests.post")
+    @patch("crewai.cli.authentication.main.httpx.post")
     @patch("crewai.cli.authentication.main.console.print")
     def test_poll_for_token_timeout(self, mock_console_print, mock_post):
         mock_response_pending = MagicMock()
@@ -324,7 +324,7 @@ class TestAuthenticationCommand:
             "Timeout: Failed to get the token. Please try again.", style="bold red"
         )
 
-    @patch("requests.post")
+    @patch("crewai.cli.authentication.main.httpx.post")
     def test_poll_for_token_error(self, mock_post):
         """Test the method to poll for token (error path)."""
         # Setup mock to return error
@@ -338,5 +338,5 @@ class TestAuthenticationCommand:
 
         device_code_data = {"device_code": "test_device_code", "interval": 1}
 
-        with pytest.raises(requests.HTTPError):
+        with pytest.raises(httpx.HTTPError):
             self.auth_command._poll_for_token(device_code_data)

lib/crewai/tests/cli/deploy/test_deploy_main.py

@@ -4,10 +4,11 @@ from io import StringIO
 from unittest.mock import MagicMock, Mock, patch
 
 import pytest
-import requests
+import json
+
+import httpx
 from crewai.cli.deploy.main import DeployCommand
 from crewai.cli.utils import parse_toml
-from requests.exceptions import JSONDecodeError
 
 
 class TestDeployCommand(unittest.TestCase):
@@ -37,18 +38,18 @@ class TestDeployCommand(unittest.TestCase):
             DeployCommand()
 
     def test_validate_response_successful_response(self):
-        mock_response = Mock(spec=requests.Response)
+        mock_response = Mock(spec=httpx.Response)
         mock_response.json.return_value = {"message": "Success"}
         mock_response.status_code = 200
-        mock_response.ok = True
+        mock_response.is_success = True
 
         with patch("sys.stdout", new=StringIO()) as fake_out:
             self.deploy_command._validate_response(mock_response)
             assert fake_out.getvalue() == ""
 
     def test_validate_response_json_decode_error(self):
-        mock_response = Mock(spec=requests.Response)
-        mock_response.json.side_effect = JSONDecodeError("Decode error", "", 0)
+        mock_response = Mock(spec=httpx.Response)
+        mock_response.json.side_effect = json.JSONDecodeError("Decode error", "", 0)
         mock_response.status_code = 500
         mock_response.content = b"Invalid JSON"
 
@@ -64,13 +65,13 @@ class TestDeployCommand(unittest.TestCase):
             assert "Response:\nInvalid JSON" in output
 
     def test_validate_response_422_error(self):
-        mock_response = Mock(spec=requests.Response)
+        mock_response = Mock(spec=httpx.Response)
         mock_response.json.return_value = {
             "field1": ["Error message 1"],
             "field2": ["Error message 2"],
         }
         mock_response.status_code = 422
-        mock_response.ok = False
+        mock_response.is_success = False
 
         with patch("sys.stdout", new=StringIO()) as fake_out:
             with pytest.raises(SystemExit):
@@ -84,10 +85,10 @@ class TestDeployCommand(unittest.TestCase):
             assert "Field2 Error message 2" in output
 
     def test_validate_response_other_error(self):
-        mock_response = Mock(spec=requests.Response)
+        mock_response = Mock(spec=httpx.Response)
         mock_response.json.return_value = {"error": "Something went wrong"}
         mock_response.status_code = 500
-        mock_response.ok = False
+        mock_response.is_success = False
 
         with patch("sys.stdout", new=StringIO()) as fake_out:
             with pytest.raises(SystemExit):

lib/crewai/tests/cli/enterprise/test_main.py

@@ -3,8 +3,9 @@ import unittest
 from pathlib import Path
 from unittest.mock import Mock, patch
 
-import requests
-from requests.exceptions import JSONDecodeError
+import json
+
+import httpx
 
 from crewai.cli.enterprise.main import EnterpriseConfigureCommand
 from crewai.cli.settings.main import SettingsCommand
@@ -25,7 +26,7 @@ class TestEnterpriseConfigureCommand(unittest.TestCase):
     def tearDown(self):
         shutil.rmtree(self.test_dir)
 
-    @patch('crewai.cli.enterprise.main.requests.get')
+    @patch('crewai.cli.enterprise.main.httpx.get')
     @patch('crewai.cli.enterprise.main.get_crewai_version')
     def test_successful_configuration(self, mock_get_version, mock_requests_get):
         mock_get_version.return_value = "1.0.0"
@@ -73,19 +74,23 @@ class TestEnterpriseConfigureCommand(unittest.TestCase):
             self.assertEqual(call_args[0], key)
             self.assertEqual(call_args[1], value)
 
-    @patch('crewai.cli.enterprise.main.requests.get')
+    @patch('crewai.cli.enterprise.main.httpx.get')
     @patch('crewai.cli.enterprise.main.get_crewai_version')
     def test_http_error_handling(self, mock_get_version, mock_requests_get):
         mock_get_version.return_value = "1.0.0"
 
         mock_response = Mock()
-        mock_response.raise_for_status.side_effect = requests.HTTPError("404 Not Found")
+        mock_response.raise_for_status.side_effect = httpx.HTTPStatusError(
+            "404 Not Found",
+            request=httpx.Request("GET", "http://test"),
+            response=httpx.Response(404),
+        )
         mock_requests_get.return_value = mock_response
 
         with self.assertRaises(SystemExit):
             self.enterprise_command.configure("https://enterprise.example.com")
 
-    @patch('crewai.cli.enterprise.main.requests.get')
+    @patch('crewai.cli.enterprise.main.httpx.get')
     @patch('crewai.cli.enterprise.main.get_crewai_version')
     def test_invalid_json_response(self, mock_get_version, mock_requests_get):
         mock_get_version.return_value = "1.0.0"
@@ -93,13 +98,13 @@ class TestEnterpriseConfigureCommand(unittest.TestCase):
         mock_response = Mock()
         mock_response.status_code = 200
         mock_response.raise_for_status.return_value = None
-        mock_response.json.side_effect = JSONDecodeError("Invalid JSON", "", 0)
+        mock_response.json.side_effect = json.JSONDecodeError("Invalid JSON", "", 0)
         mock_requests_get.return_value = mock_response
 
         with self.assertRaises(SystemExit):
             self.enterprise_command.configure("https://enterprise.example.com")
 
-    @patch('crewai.cli.enterprise.main.requests.get')
+    @patch('crewai.cli.enterprise.main.httpx.get')
     @patch('crewai.cli.enterprise.main.get_crewai_version')
     def test_missing_required_fields(self, mock_get_version, mock_requests_get):
         mock_get_version.return_value = "1.0.0"
@@ -115,7 +120,7 @@ class TestEnterpriseConfigureCommand(unittest.TestCase):
         with self.assertRaises(SystemExit):
             self.enterprise_command.configure("https://enterprise.example.com")
 
-    @patch('crewai.cli.enterprise.main.requests.get')
+    @patch('crewai.cli.enterprise.main.httpx.get')
     @patch('crewai.cli.enterprise.main.get_crewai_version')
     def test_settings_update_error(self, mock_get_version, mock_requests_get):
         mock_get_version.return_value = "1.0.0"

lib/crewai/tests/cli/organization/test_main.py

@@ -3,7 +3,7 @@ from unittest.mock import MagicMock, patch, call
 
 import pytest
 from click.testing import CliRunner
-import requests
+import httpx
 
 from crewai.cli.organization.main import OrganizationCommand
 from crewai.cli.cli import org_list, switch, current
@@ -115,7 +115,7 @@ class TestOrganizationCommand(unittest.TestCase):
     def test_list_organizations_api_error(self, mock_console):
         self.org_command.plus_api_client = MagicMock()
         self.org_command.plus_api_client.get_organizations.side_effect = (
-            requests.exceptions.RequestException("API Error")
+            httpx.HTTPError("API Error")
         )
 
         with pytest.raises(SystemExit):
@@ -201,8 +201,10 @@ class TestOrganizationCommand(unittest.TestCase):
     @patch("crewai.cli.organization.main.console")
     def test_list_organizations_unauthorized(self, mock_console):
         mock_response = MagicMock()
-        mock_http_error = requests.exceptions.HTTPError(
-            "401 Client Error: Unauthorized", response=MagicMock(status_code=401)
+        mock_http_error = httpx.HTTPStatusError(
+            "401 Client Error: Unauthorized",
+            request=httpx.Request("GET", "http://test"),
+            response=httpx.Response(401),
         )
 
         mock_response.raise_for_status.side_effect = mock_http_error
@@ -219,8 +221,10 @@ class TestOrganizationCommand(unittest.TestCase):
     @patch("crewai.cli.organization.main.console")
     def test_switch_organization_unauthorized(self, mock_console):
         mock_response = MagicMock()
-        mock_http_error = requests.exceptions.HTTPError(
-            "401 Client Error: Unauthorized", response=MagicMock(status_code=401)
+        mock_http_error = httpx.HTTPStatusError(
+            "401 Client Error: Unauthorized",
+            request=httpx.Request("GET", "http://test"),
+            response=httpx.Response(401),
         )
 
         mock_response.raise_for_status.side_effect = mock_http_error

lib/crewai/tests/cli/test_plus_api.py

@@ -33,9 +33,9 @@ class TestPlusAPI(unittest.TestCase):
         self.assertEqual(response, mock_response)
 
     def assert_request_with_org_id(
-        self, mock_make_request, method: str, endpoint: str, **kwargs
+        self, mock_client_instance, method: str, endpoint: str, **kwargs
     ):
-        mock_make_request.assert_called_once_with(
+        mock_client_instance.request.assert_called_once_with(
             method,
             f"{os.getenv('CREWAI_PLUS_URL')}{endpoint}",
             headers={
@@ -49,24 +49,25 @@ class TestPlusAPI(unittest.TestCase):
         )
 
     @patch("crewai.cli.plus_api.Settings")
-    @patch("requests.Session.request")
+    @patch("crewai.cli.plus_api.httpx.Client")
     def test_login_to_tool_repository_with_org_uuid(
-        self, mock_make_request, mock_settings_class
+        self, mock_client_class, mock_settings_class
     ):
         mock_settings = MagicMock()
         mock_settings.org_uuid = self.org_uuid
         mock_settings.enterprise_base_url = os.getenv('CREWAI_PLUS_URL')
         mock_settings_class.return_value = mock_settings
-        # re-initialize Client
         self.api = PlusAPI(self.api_key)
 
+        mock_client_instance = MagicMock()
         mock_response = MagicMock()
-        mock_make_request.return_value = mock_response
+        mock_client_instance.request.return_value = mock_response
+        mock_client_class.return_value.__enter__.return_value = mock_client_instance
 
         response = self.api.login_to_tool_repository()
 
         self.assert_request_with_org_id(
-            mock_make_request, "POST", "/crewai_plus/api/v1/tools/login"
+            mock_client_instance, "POST", "/crewai_plus/api/v1/tools/login"
         )
         self.assertEqual(response, mock_response)
 
@@ -82,23 +83,23 @@ class TestPlusAPI(unittest.TestCase):
         self.assertEqual(response, mock_response)
 
     @patch("crewai.cli.plus_api.Settings")
-    @patch("requests.Session.request")
-    def test_get_tool_with_org_uuid(self, mock_make_request, mock_settings_class):
+    @patch("crewai.cli.plus_api.httpx.Client")
+    def test_get_tool_with_org_uuid(self, mock_client_class, mock_settings_class):
         mock_settings = MagicMock()
         mock_settings.org_uuid = self.org_uuid
         mock_settings.enterprise_base_url = os.getenv('CREWAI_PLUS_URL')
         mock_settings_class.return_value = mock_settings
-        # re-initialize Client
         self.api = PlusAPI(self.api_key)
 
-        # Set up mock response
+        mock_client_instance = MagicMock()
         mock_response = MagicMock()
-        mock_make_request.return_value = mock_response
+        mock_client_instance.request.return_value = mock_response
+        mock_client_class.return_value.__enter__.return_value = mock_client_instance
 
         response = self.api.get_tool("test_tool_handle")
 
         self.assert_request_with_org_id(
-            mock_make_request, "GET", "/crewai_plus/api/v1/tools/test_tool_handle"
+            mock_client_instance, "GET", "/crewai_plus/api/v1/tools/test_tool_handle"
         )
         self.assertEqual(response, mock_response)
 
@@ -130,18 +131,18 @@ class TestPlusAPI(unittest.TestCase):
         self.assertEqual(response, mock_response)
 
     @patch("crewai.cli.plus_api.Settings")
-    @patch("requests.Session.request")
-    def test_publish_tool_with_org_uuid(self, mock_make_request, mock_settings_class):
+    @patch("crewai.cli.plus_api.httpx.Client")
+    def test_publish_tool_with_org_uuid(self, mock_client_class, mock_settings_class):
         mock_settings = MagicMock()
         mock_settings.org_uuid = self.org_uuid
         mock_settings.enterprise_base_url = os.getenv('CREWAI_PLUS_URL')
         mock_settings_class.return_value = mock_settings
-        # re-initialize Client
         self.api = PlusAPI(self.api_key)
 
-        # Set up mock response
+        mock_client_instance = MagicMock()
         mock_response = MagicMock()
-        mock_make_request.return_value = mock_response
+        mock_client_instance.request.return_value = mock_response
+        mock_client_class.return_value.__enter__.return_value = mock_client_instance
 
         handle = "test_tool_handle"
         public = True
@@ -153,7 +154,6 @@ class TestPlusAPI(unittest.TestCase):
             handle, public, version, description, encoded_file
         )
 
-        # Expected params including organization_uuid
         expected_params = {
             "handle": handle,
             "public": public,
@@ -164,7 +164,7 @@ class TestPlusAPI(unittest.TestCase):
         }
 
         self.assert_request_with_org_id(
-            mock_make_request, "POST", "/crewai_plus/api/v1/tools", json=expected_params
+            mock_client_instance, "POST", "/crewai_plus/api/v1/tools", json=expected_params
         )
         self.assertEqual(response, mock_response)
 
@@ -195,20 +195,19 @@ class TestPlusAPI(unittest.TestCase):
         )
         self.assertEqual(response, mock_response)
 
-    @patch("crewai.cli.plus_api.requests.Session")
-    def test_make_request(self, mock_session):
+    @patch("crewai.cli.plus_api.httpx.Client")
+    def test_make_request(self, mock_client_class):
+        mock_client_instance = MagicMock()
         mock_response = MagicMock()
-
-        mock_session_instance = mock_session.return_value
-        mock_session_instance.request.return_value = mock_response
+        mock_client_instance.request.return_value = mock_response
+        mock_client_class.return_value.__enter__.return_value = mock_client_instance
 
         response = self.api._make_request("GET", "test_endpoint")
 
-        mock_session.assert_called_once()
-        mock_session_instance.request.assert_called_once_with(
+        mock_client_class.assert_called_once_with(trust_env=False, verify=True)
+        mock_client_instance.request.assert_called_once_with(
             "GET", f"{self.api.base_url}/test_endpoint", headers=self.api.headers
         )
-        mock_session_instance.trust_env = False
         self.assertEqual(response, mock_response)
 
     @patch("crewai.cli.plus_api.PlusAPI._make_request")

lib/crewai/tests/cli/tools/test_main.py

@@ -351,7 +351,7 @@ def test_publish_api_error(
     mock_response = MagicMock()
     mock_response.status_code = 500
     mock_response.json.return_value = {"error": "Internal Server Error"}
-    mock_response.ok = False
+    mock_response.is_success = False
     mock_publish.return_value = mock_response
 
     with raises(SystemExit):

lib/crewai/tests/cli/triggers/test_main.py

@@ -3,7 +3,7 @@ import subprocess
 import unittest
 from unittest.mock import Mock, patch
 
-import requests
+import httpx
 from crewai.cli.triggers.main import TriggersCommand
 
 
@@ -21,7 +21,7 @@ class TestTriggersCommand(unittest.TestCase):
 
     @patch("crewai.cli.triggers.main.console.print")
     def test_list_triggers_success(self, mock_console_print):
-        mock_response = Mock(spec=requests.Response)
+        mock_response = Mock(spec=httpx.Response)
         mock_response.status_code = 200
         mock_response.ok = True
         mock_response.json.return_value = {
@@ -50,7 +50,7 @@ class TestTriggersCommand(unittest.TestCase):
 
     @patch("crewai.cli.triggers.main.console.print")
     def test_list_triggers_no_apps(self, mock_console_print):
-        mock_response = Mock(spec=requests.Response)
+        mock_response = Mock(spec=httpx.Response)
         mock_response.status_code = 200
         mock_response.ok = True
         mock_response.json.return_value = {"apps": []}
@@ -81,7 +81,7 @@ class TestTriggersCommand(unittest.TestCase):
     @patch("crewai.cli.triggers.main.console.print")
     @patch.object(TriggersCommand, "_run_crew_with_payload")
     def test_execute_with_trigger_success(self, mock_run_crew, mock_console_print):
-        mock_response = Mock(spec=requests.Response)
+        mock_response = Mock(spec=httpx.Response)
         mock_response.status_code = 200
         mock_response.ok = True
         mock_response.json.return_value = {
@@ -99,7 +99,7 @@ class TestTriggersCommand(unittest.TestCase):
 
     @patch("crewai.cli.triggers.main.console.print")
     def test_execute_with_trigger_not_found(self, mock_console_print):
-        mock_response = Mock(spec=requests.Response)
+        mock_response = Mock(spec=httpx.Response)
         mock_response.status_code = 404
         mock_response.json.return_value = {"error": "Trigger not found"}
         self.mock_client.get_trigger_payload.return_value = mock_response
@@ -159,7 +159,7 @@ class TestTriggersCommand(unittest.TestCase):
 
     @patch("crewai.cli.triggers.main.console.print")
     def test_execute_with_trigger_with_default_error_message(self, mock_console_print):
-        mock_response = Mock(spec=requests.Response)
+        mock_response = Mock(spec=httpx.Response)
         mock_response.status_code = 404
         mock_response.json.return_value = {}
         self.mock_client.get_trigger_payload.return_value = mock_response

lib/crewai/tests/llms/bedrock/test_bedrock.py

@@ -437,17 +437,36 @@ def test_bedrock_aws_credentials_configuration():
     """
     Test that AWS credentials configuration works properly
     """
+    aws_access_key_id = "test-access-key"
+    aws_secret_access_key = "test-secret-key"
+    aws_region_name = "us-east-1"
+
+
     # Test with environment variables
     with patch.dict(os.environ, {
-        "AWS_ACCESS_KEY_ID": "test-access-key",
-        "AWS_SECRET_ACCESS_KEY": "test-secret-key",
-        "AWS_DEFAULT_REGION": "us-east-1"
+        "AWS_ACCESS_KEY_ID": aws_access_key_id,
+        "AWS_SECRET_ACCESS_KEY": aws_secret_access_key,
+        "AWS_DEFAULT_REGION": aws_region_name
     }):
         llm = LLM(model="bedrock/anthropic.claude-3-5-sonnet-20241022-v2:0")
 
         from crewai.llms.providers.bedrock.completion import BedrockCompletion
         assert isinstance(llm, BedrockCompletion)
-        assert llm.region_name == "us-east-1"
+        assert llm.region_name == aws_region_name
+        assert llm.aws_access_key_id == aws_access_key_id
+        assert llm.aws_secret_access_key == aws_secret_access_key
+
+      # Test with litellm environment variables
+    with patch.dict(os.environ, {
+        "AWS_ACCESS_KEY_ID": aws_access_key_id,
+        "AWS_SECRET_ACCESS_KEY": aws_secret_access_key,
+        "AWS_REGION_NAME": aws_region_name
+    }):
+        llm = LLM(model="bedrock/anthropic.claude-3-5-sonnet-20241022-v2:0")
+
+        from crewai.llms.providers.bedrock.completion import BedrockCompletion
+        assert isinstance(llm, BedrockCompletion)
+        assert llm.region_name == aws_region_name
 
     # Test with explicit credentials
     llm_explicit = LLM(

lib/crewai/tests/llms/google/test_google.py

@@ -957,6 +957,47 @@ def test_gemini_agent_kickoff_structured_output_with_tools():
 
 
 
+@pytest.mark.vcr()
+def test_gemini_crew_structured_output_with_tools():
+    """
+    Test that a crew with Gemini can use both tools and output_pydantic on a task.
+    """
+    from pydantic import BaseModel, Field
+    from crewai.tools import tool
+
+    class CalculationResult(BaseModel):
+        operation: str = Field(description="The mathematical operation performed")
+        result: int = Field(description="The result of the calculation")
+        explanation: str = Field(description="Brief explanation of the calculation")
+
+    @tool
+    def add_numbers(a: int, b: int) -> int:
+        """Add two numbers together and return the sum."""
+        return a + b
+
+    agent = Agent(
+        role="Calculator",
+        goal="Perform calculations using available tools",
+        backstory="You are a calculator assistant that uses tools to compute results.",
+        llm=LLM(model="google/gemini-2.0-flash-001"),
+        tools=[add_numbers],
+    )
+
+    task = Task(
+        description="Calculate 15 + 27 using your add_numbers tool. Report the result.",
+        expected_output="A structured calculation result",
+        output_pydantic=CalculationResult,
+        agent=agent,
+    )
+
+    crew = Crew(agents=[agent], tasks=[task])
+    result = crew.kickoff()
+
+    assert result.pydantic is not None, "Expected pydantic output but got None"
+    assert isinstance(result.pydantic, CalculationResult)
+    assert result.pydantic.result == 42, f"Expected 42 but got {result.pydantic.result}"
+
+
 def test_gemini_stop_words_not_applied_to_structured_output():
     """
     Test that stop words are NOT applied when response_model is provided.

lib/crewai/tests/test_task.py

@@ -759,11 +759,11 @@ def test_custom_converter_cls():
 
     crew = Crew(agents=[scorer], tasks=[task])
 
-    with patch.object(
-        ScoreConverter, "to_pydantic", return_value=ScoreOutput(score=5)
-    ) as mock_to_pydantic:
-        crew.kickoff()
-        mock_to_pydantic.assert_called_once()
+    # With native structured output, the LLM returns a BaseModel directly,
+    # so the converter is bypassed. Verify the output is valid instead.
+    result = crew.kickoff()
+    assert isinstance(result.pydantic, ScoreOutput)
+    assert isinstance(result.pydantic.score, int)
 
 
 @pytest.mark.vcr()

lib/crewai/tests/tools/test_base_tool.py

@@ -3,6 +3,8 @@ from typing import Callable
 from unittest.mock import patch
 
 import pytest
+from pydantic import BaseModel, Field
+
 from crewai.agent import Agent
 from crewai.crew import Crew
 from crewai.task import Task
@@ -230,3 +232,204 @@ def test_max_usage_count_is_respected():
     crew.kickoff()
     assert tool.max_usage_count == 5
     assert tool.current_usage_count == 5
+
+
+# =============================================================================
+# Schema Validation in run() Tests
+# =============================================================================
+
+
+class CodeExecutorInput(BaseModel):
+    code: str = Field(description="The code to execute")
+    language: str = Field(default="python", description="Programming language")
+
+
+class CodeExecutorTool(BaseTool):
+    name: str = "code_executor"
+    description: str = "Execute code snippets"
+    args_schema: type[BaseModel] = CodeExecutorInput
+
+    def _run(self, code: str, language: str = "python") -> str:
+        return f"Executed {language}: {code}"
+
+
+class TestBaseToolRunValidation:
+    """Tests for args_schema validation in BaseTool.run()."""
+
+    def test_run_with_valid_kwargs_passes_validation(self) -> None:
+        """Valid keyword arguments should pass schema validation and execute."""
+        t = CodeExecutorTool()
+        result = t.run(code="print('hello')")
+        assert result == "Executed python: print('hello')"
+
+    def test_run_with_all_kwargs_passes_validation(self) -> None:
+        """All keyword arguments including optional ones should pass."""
+        t = CodeExecutorTool()
+        result = t.run(code="console.log('hi')", language="javascript")
+        assert result == "Executed javascript: console.log('hi')"
+
+    def test_run_with_missing_required_kwarg_raises(self) -> None:
+        """Missing required kwargs should raise ValueError from schema validation."""
+        t = CodeExecutorTool()
+        with pytest.raises(ValueError, match="validation failed"):
+            t.run(language="python")
+
+    def test_run_with_wrong_field_name_raises(self) -> None:
+        """Kwargs not matching any schema field should trigger validation error
+        for missing required fields."""
+        t = CodeExecutorTool()
+        with pytest.raises(ValueError, match="validation failed"):
+            t.run(wrong_arg="value")
+
+    def test_run_with_positional_args_skips_validation(self) -> None:
+        """Positional-arg calls should bypass schema validation (backwards compat)."""
+        class SimpleTool(BaseTool):
+            name: str = "simple"
+            description: str = "A simple tool"
+
+            def _run(self, question: str) -> str:
+                return question
+
+        t = SimpleTool()
+        result = t.run("What is life?")
+        assert result == "What is life?"
+
+    def test_run_strips_extra_kwargs_from_llm(self) -> None:
+        """Extra kwargs not in the schema should be silently stripped,
+        preventing unexpected-keyword crashes in _run."""
+        t = CodeExecutorTool()
+        result = t.run(code="1+1", extra_hallucinated_field="junk")
+        assert result == "Executed python: 1+1"
+
+    def test_run_increments_usage_after_validation(self) -> None:
+        """Usage count should still increment after validated execution."""
+        t = CodeExecutorTool()
+        assert t.current_usage_count == 0
+        t.run(code="x = 1")
+        assert t.current_usage_count == 1
+
+    def test_run_does_not_increment_usage_on_validation_error(self) -> None:
+        """Usage count should NOT increment when validation fails."""
+        t = CodeExecutorTool()
+        assert t.current_usage_count == 0
+        with pytest.raises(ValueError):
+            t.run(wrong="bad")
+        assert t.current_usage_count == 0
+
+
+class TestToolDecoratorRunValidation:
+    """Tests for args_schema validation in Tool.run() (decorator-based tools)."""
+
+    def test_decorator_tool_run_validates_kwargs(self) -> None:
+        """Decorator-created tools should also validate kwargs against schema."""
+        @tool("execute_code")
+        def execute_code(code: str, language: str = "python") -> str:
+            """Execute a code snippet."""
+            return f"Executed {language}: {code}"
+
+        result = execute_code.run(code="x = 1")
+        assert result == "Executed python: x = 1"
+
+    def test_decorator_tool_run_rejects_missing_required(self) -> None:
+        """Decorator tools should reject missing required args via validation."""
+        @tool("execute_code")
+        def execute_code(code: str) -> str:
+            """Execute a code snippet."""
+            return f"Executed: {code}"
+
+        with pytest.raises(ValueError, match="validation failed"):
+            execute_code.run(wrong_arg="value")
+
+    def test_decorator_tool_positional_args_still_work(self) -> None:
+        """Positional args to decorator tools should bypass validation."""
+        @tool("greet")
+        def greet(name: str) -> str:
+            """Greet someone."""
+            return f"Hello, {name}!"
+
+        result = greet.run("World")
+        assert result == "Hello, World!"
+
+
+# =============================================================================
+# Async arun() Schema Validation Tests
+# =============================================================================
+
+
+class AsyncCodeExecutorTool(BaseTool):
+    name: str = "async_code_executor"
+    description: str = "Execute code snippets asynchronously"
+    args_schema: type[BaseModel] = CodeExecutorInput
+
+    async def _arun(self, code: str, language: str = "python") -> str:
+        return f"Async executed {language}: {code}"
+
+    def _run(self, code: str, language: str = "python") -> str:
+        return f"Executed {language}: {code}"
+
+
+class TestBaseToolArunValidation:
+    """Tests for args_schema validation in BaseTool.arun()."""
+
+    @pytest.mark.asyncio
+    async def test_arun_with_valid_kwargs_passes_validation(self) -> None:
+        """Valid keyword arguments should pass schema validation in arun."""
+        t = AsyncCodeExecutorTool()
+        result = await t.arun(code="print('hello')")
+        assert result == "Async executed python: print('hello')"
+
+    @pytest.mark.asyncio
+    async def test_arun_with_missing_required_kwarg_raises(self) -> None:
+        """Missing required kwargs should raise ValueError in arun."""
+        t = AsyncCodeExecutorTool()
+        with pytest.raises(ValueError, match="validation failed"):
+            await t.arun(language="python")
+
+    @pytest.mark.asyncio
+    async def test_arun_with_wrong_field_name_raises(self) -> None:
+        """Kwargs not matching schema fields should trigger validation error in arun."""
+        t = AsyncCodeExecutorTool()
+        with pytest.raises(ValueError, match="validation failed"):
+            await t.arun(wrong_arg="value")
+
+    @pytest.mark.asyncio
+    async def test_arun_strips_extra_kwargs(self) -> None:
+        """Extra kwargs not in the schema should be stripped in arun."""
+        t = AsyncCodeExecutorTool()
+        result = await t.arun(code="1+1", extra_field="junk")
+        assert result == "Async executed python: 1+1"
+
+    @pytest.mark.asyncio
+    async def test_arun_does_not_increment_usage_on_validation_error(self) -> None:
+        """Usage count should NOT increment when arun validation fails."""
+        t = AsyncCodeExecutorTool()
+        assert t.current_usage_count == 0
+        with pytest.raises(ValueError):
+            await t.arun(wrong="bad")
+        assert t.current_usage_count == 0
+
+
+class TestToolDecoratorArunValidation:
+    """Tests for args_schema validation in Tool.arun() (decorator-based async tools)."""
+
+    @pytest.mark.asyncio
+    async def test_async_decorator_tool_arun_validates_kwargs(self) -> None:
+        """Async decorator tools should validate kwargs in arun."""
+        @tool("async_execute")
+        async def async_execute(code: str, language: str = "python") -> str:
+            """Execute code asynchronously."""
+            return f"Async {language}: {code}"
+
+        result = await async_execute.arun(code="x = 1")
+        assert result == "Async python: x = 1"
+
+    @pytest.mark.asyncio
+    async def test_async_decorator_tool_arun_rejects_missing_required(self) -> None:
+        """Async decorator tools should reject missing required args in arun."""
+        @tool("async_execute")
+        async def async_execute(code: str) -> str:
+            """Execute code asynchronously."""
+            return f"Async: {code}"
+
+        with pytest.raises(ValueError, match="validation failed"):
+            await async_execute.arun(wrong_arg="value")

lib/crewai/tests/utilities/test_agent_utils.py

@@ -3,7 +3,7 @@
 from __future__ import annotations
 
 import asyncio
-from typing import Any
+from typing import Any, Literal, Optional
 from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
@@ -17,6 +17,7 @@ from crewai.utilities.agent_utils import (
     _format_messages_for_summary,
     _split_messages_into_chunks,
     convert_tools_to_openai_schema,
+    parse_tool_call_args,
     summarize_messages,
 )
 
@@ -234,6 +235,178 @@ def _make_mock_i18n() -> MagicMock:
     }.get(key, "")
     return mock_i18n
 
+class MCPStyleInput(BaseModel):
+    """Input schema mimicking an MCP tool with optional fields."""
+
+    query: str = Field(description="Search query")
+    filter_type: Optional[Literal["internal", "user"]] = Field(
+        default=None, description="Filter type"
+    )
+    page_id: Optional[str] = Field(
+        default=None, description="Page UUID"
+    )
+
+
+class MCPStyleTool(BaseTool):
+    """A tool mimicking MCP tool schemas with optional fields."""
+
+    name: str = "mcp_search"
+    description: str = "Search with optional filters"
+    args_schema: type[BaseModel] = MCPStyleInput
+
+    def _run(self, **kwargs: Any) -> str:
+        return "result"
+
+
+class TestOptionalFieldsPreserveNull:
+    """Tests that optional tool fields preserve null in the schema."""
+
+    def test_optional_string_allows_null(self) -> None:
+        """Optional[str] fields should include null in the schema so the LLM
+        can send null instead of being forced to guess a value."""
+        tools = [MCPStyleTool()]
+        schemas, _ = convert_tools_to_openai_schema(tools)
+
+        params = schemas[0]["function"]["parameters"]
+        page_id_prop = params["properties"]["page_id"]
+
+        assert "anyOf" in page_id_prop
+        type_options = [opt.get("type") for opt in page_id_prop["anyOf"]]
+        assert "string" in type_options
+        assert "null" in type_options
+
+    def test_optional_literal_allows_null(self) -> None:
+        """Optional[Literal[...]] fields should include null."""
+        tools = [MCPStyleTool()]
+        schemas, _ = convert_tools_to_openai_schema(tools)
+
+        params = schemas[0]["function"]["parameters"]
+        filter_prop = params["properties"]["filter_type"]
+
+        assert "anyOf" in filter_prop
+        has_null = any(opt.get("type") == "null" for opt in filter_prop["anyOf"])
+        assert has_null
+
+    def test_required_field_stays_non_null(self) -> None:
+        """Required fields without Optional should NOT have null."""
+        tools = [MCPStyleTool()]
+        schemas, _ = convert_tools_to_openai_schema(tools)
+
+        params = schemas[0]["function"]["parameters"]
+        query_prop = params["properties"]["query"]
+
+        assert query_prop.get("type") == "string"
+        assert "anyOf" not in query_prop
+
+    def test_all_fields_in_required_for_strict_mode(self) -> None:
+        """All fields (including optional) must be in required for strict mode."""
+        tools = [MCPStyleTool()]
+        schemas, _ = convert_tools_to_openai_schema(tools)
+
+        params = schemas[0]["function"]["parameters"]
+        assert "query" in params["required"]
+        assert "filter_type" in params["required"]
+        assert "page_id" in params["required"]
+
+
+class TestStripOpenAISpecificSchemaFields:
+    """Tests for strip_openai_specific_schema_fields.
+
+    All tests call the real schema pipeline with real tool instances —
+    no mocking of internal functions.
+    """
+
+    def test_removes_additional_properties_at_root(self) -> None:
+        """additionalProperties must be absent after stripping."""
+        from crewai.utilities.pydantic_schema_utils import (
+            strip_openai_specific_schema_fields,
+        )
+
+        tools = [MCPStyleTool()]
+        schemas, _ = convert_tools_to_openai_schema(tools)
+        params = schemas[0]["function"]["parameters"]
+
+        # Confirm it's present in the OpenAI-format schema
+        assert params.get("additionalProperties") is False
+
+        clean = strip_openai_specific_schema_fields(params)
+        assert "additionalProperties" not in clean
+
+    def test_removes_additional_properties_recursively(self) -> None:
+        """Nested objects must also have additionalProperties removed."""
+        from crewai.utilities.pydantic_schema_utils import (
+            strip_openai_specific_schema_fields,
+        )
+
+        class NestedInput(BaseModel):
+            config: dict[str, Any] = Field(default_factory=dict)
+            query: str = Field(description="query")
+
+        class NestedTool(BaseTool):
+            name: str = "nested_tool"
+            description: str = "tool with nested object"
+            args_schema: type[BaseModel] = NestedInput
+
+            def _run(self, **kwargs: Any) -> str:
+                return "ok"
+
+        schemas, _ = convert_tools_to_openai_schema([NestedTool()])
+        params = schemas[0]["function"]["parameters"]
+        clean = strip_openai_specific_schema_fields(params)
+
+        def has_additional_properties(obj: Any) -> bool:
+            if isinstance(obj, dict):
+                if "additionalProperties" in obj:
+                    return True
+                return any(has_additional_properties(v) for v in obj.values())
+            if isinstance(obj, list):
+                return any(has_additional_properties(i) for i in obj)
+            return False
+
+        assert not has_additional_properties(clean)
+
+    def test_preserves_required_and_properties(self) -> None:
+        """required and properties must survive the strip."""
+        from crewai.utilities.pydantic_schema_utils import (
+            strip_openai_specific_schema_fields,
+        )
+
+        tools = [MCPStyleTool()]
+        schemas, _ = convert_tools_to_openai_schema(tools)
+        params = schemas[0]["function"]["parameters"]
+        clean = strip_openai_specific_schema_fields(params)
+
+        assert "properties" in clean
+        assert "required" in clean
+        assert "query" in clean["properties"]
+
+    def test_gemini_bedrock_path_extracts_clean_parameters(self) -> None:
+        """extract_tool_info returns the same parameters dict that
+        strip_openai_specific_schema_fields will clean — verifying the
+        full Gemini/Bedrock conversion pipeline produces a valid schema."""
+        from crewai.llms.providers.utils.common import extract_tool_info
+        from crewai.utilities.pydantic_schema_utils import (
+            strip_openai_specific_schema_fields,
+        )
+
+        tools = [MCPStyleTool()]
+        schemas, _ = convert_tools_to_openai_schema(tools)
+
+        # extract_tool_info is what Gemini/Bedrock call internally
+        _name, _desc, parameters = extract_tool_info(schemas[0])
+
+        assert parameters.get("additionalProperties") is False, (
+            "Raw OpenAI schema should have additionalProperties=false"
+        )
+
+        clean = strip_openai_specific_schema_fields(parameters)
+        assert "additionalProperties" not in clean
+        # null types preserved for optional fields
+        assert any(
+            opt.get("type") == "null"
+            for opt in clean["properties"]["page_id"].get("anyOf", [])
+        )
+
 
 class TestSummarizeMessages:
     """Tests for summarize_messages function."""
@@ -922,3 +1095,56 @@ class TestParallelSummarizationVCR:
         assert summary_msg["role"] == "user"
         assert "files" in summary_msg
         assert "report.pdf" in summary_msg["files"]
+
+
+class TestParseToolCallArgs:
+    """Unit tests for parse_tool_call_args."""
+
+    def test_valid_json_string_returns_dict(self) -> None:
+        args_dict, error = parse_tool_call_args('{"code": "print(1)"}', "run_code", "call_1")
+        assert error is None
+        assert args_dict == {"code": "print(1)"}
+
+    def test_malformed_json_returns_error_dict(self) -> None:
+        args_dict, error = parse_tool_call_args('{"code": "print("hi")"}', "run_code", "call_1")
+        assert args_dict is None
+        assert error is not None
+        assert error["call_id"] == "call_1"
+        assert error["func_name"] == "run_code"
+        assert error["from_cache"] is False
+        assert "Failed to parse tool arguments as JSON" in error["result"]
+        assert "run_code" in error["result"]
+
+    def test_malformed_json_preserves_original_tool(self) -> None:
+        mock_tool = object()
+        _, error = parse_tool_call_args("{bad}", "my_tool", "call_2", original_tool=mock_tool)
+        assert error is not None
+        assert error["original_tool"] is mock_tool
+
+    def test_malformed_json_original_tool_defaults_to_none(self) -> None:
+        _, error = parse_tool_call_args("{bad}", "my_tool", "call_3")
+        assert error is not None
+        assert error["original_tool"] is None
+
+    def test_dict_input_returned_directly(self) -> None:
+        func_args = {"code": "x = 42"}
+        args_dict, error = parse_tool_call_args(func_args, "run_code", "call_4")
+        assert error is None
+        assert args_dict == {"code": "x = 42"}
+
+    def test_empty_dict_input_returned_directly(self) -> None:
+        args_dict, error = parse_tool_call_args({}, "run_code", "call_5")
+        assert error is None
+        assert args_dict == {}
+
+    def test_valid_json_with_nested_values(self) -> None:
+        args_dict, error = parse_tool_call_args(
+            '{"query": "hello", "options": {"limit": 10}}', "search", "call_6"
+        )
+        assert error is None
+        assert args_dict == {"query": "hello", "options": {"limit": 10}}
+
+    def test_error_result_has_correct_keys(self) -> None:
+        _, error = parse_tool_call_args("{bad json}", "tool", "call_7")
+        assert error is not None
+        assert set(error.keys()) == {"call_id", "func_name", "result", "from_cache", "original_tool"}

lib/crewai/tests/utilities/test_llm_utils.py

@@ -81,7 +81,7 @@ def test_create_llm_from_env_with_unaccepted_attributes() -> None:
             "OPENAI_API_KEY": "fake-key",
             "AWS_ACCESS_KEY_ID": "fake-access-key",
             "AWS_SECRET_ACCESS_KEY": "fake-secret-key",
-            "AWS_REGION_NAME": "us-west-2",
+            "AWS_DEFAULT_REGION": "us-west-2",
         },
     ):
         llm = create_llm(llm_value=None)
@@ -89,7 +89,7 @@ def test_create_llm_from_env_with_unaccepted_attributes() -> None:
         assert llm.model == "gpt-3.5-turbo"
         assert not hasattr(llm, "AWS_ACCESS_KEY_ID")
         assert not hasattr(llm, "AWS_SECRET_ACCESS_KEY")
-        assert not hasattr(llm, "AWS_REGION_NAME")
+        assert not hasattr(llm, "AWS_DEFAULT_REGION")
 
 
 def test_create_llm_with_partial_attributes() -> None:

lib/devtools/src/crewai_devtools/cli.py

@@ -14,7 +14,7 @@ from rich.markdown import Markdown
 from rich.panel import Panel
 from rich.prompt import Confirm
 
-from crewai_devtools.prompts import RELEASE_NOTES_PROMPT
+from crewai_devtools.prompts import RELEASE_NOTES_PROMPT, TRANSLATE_RELEASE_NOTES_PROMPT
 
 
 load_dotenv()
@@ -191,6 +191,248 @@ def update_pyproject_dependencies(file_path: Path, new_version: str) -> bool:
     return False
 
 
+def add_docs_version(docs_json_path: Path, version: str) -> bool:
+    """Add a new version to the Mintlify docs.json versioning config.
+
+    Copies the current default version's tabs into a new version entry,
+    sets the new version as default, and marks the previous default as
+    non-default. Operates on all languages.
+
+    Args:
+        docs_json_path: Path to docs/docs.json.
+        version: Version string (e.g., "1.10.0").
+
+    Returns:
+        True if docs.json was updated, False otherwise.
+    """
+    import json
+
+    if not docs_json_path.exists():
+        return False
+
+    data = json.loads(docs_json_path.read_text())
+    version_label = f"v{version}"
+    updated = False
+
+    for lang in data.get("navigation", {}).get("languages", []):
+        versions = lang.get("versions", [])
+        if not versions:
+            continue
+
+        # Skip if this version already exists for this language
+        if any(v.get("version") == version_label for v in versions):
+            continue
+
+        # Find the current default and copy its tabs
+        default_version = next(
+            (v for v in versions if v.get("default")),
+            versions[0],
+        )
+
+        new_version = {
+            "version": version_label,
+            "default": True,
+            "tabs": default_version.get("tabs", []),
+        }
+
+        # Remove default flag from old default
+        default_version.pop("default", None)
+
+        # Insert new version at the beginning
+        versions.insert(0, new_version)
+        updated = True
+
+    if not updated:
+        return False
+
+    docs_json_path.write_text(json.dumps(data, indent=2, ensure_ascii=False) + "\n")
+    return True
+
+
+_PT_BR_MONTHS = {
+    1: "jan",
+    2: "fev",
+    3: "mar",
+    4: "abr",
+    5: "mai",
+    6: "jun",
+    7: "jul",
+    8: "ago",
+    9: "set",
+    10: "out",
+    11: "nov",
+    12: "dez",
+}
+
+_CHANGELOG_LOCALES: dict[str, dict[str, str]] = {
+    "en": {
+        "link_text": "View release on GitHub",
+        "language_name": "English",
+    },
+    "pt-BR": {
+        "link_text": "Ver release no GitHub",
+        "language_name": "Brazilian Portuguese",
+    },
+    "ko": {
+        "link_text": "GitHub 릴리스 보기",
+        "language_name": "Korean",
+    },
+}
+
+
+def translate_release_notes(
+    release_notes: str,
+    lang: str,
+    client: OpenAI,
+) -> str:
+    """Translate release notes into the target language using OpenAI.
+
+    Args:
+        release_notes: English release notes markdown.
+        lang: Language code (e.g., "pt-BR", "ko").
+        client: OpenAI client instance.
+
+    Returns:
+        Translated release notes, or original on failure.
+    """
+    locale_cfg = _CHANGELOG_LOCALES.get(lang)
+    if not locale_cfg:
+        return release_notes
+
+    language_name = locale_cfg["language_name"]
+    prompt = TRANSLATE_RELEASE_NOTES_PROMPT.substitute(
+        language=language_name,
+        release_notes=release_notes,
+    )
+
+    try:
+        response = client.chat.completions.create(
+            model="gpt-4o-mini",
+            messages=[
+                {
+                    "role": "system",
+                    "content": f"You are a professional translator. Translate technical documentation into {language_name}.",
+                },
+                {"role": "user", "content": prompt},
+            ],
+            temperature=0.3,
+        )
+        return response.choices[0].message.content or release_notes
+    except Exception as e:
+        console.print(
+            f"[yellow]Warning:[/yellow] Could not translate to {language_name}: {e}"
+        )
+        return release_notes
+
+
+def _format_changelog_date(lang: str) -> str:
+    """Format today's date for a changelog entry in the given language."""
+    from datetime import datetime
+
+    now = datetime.now()
+    if lang == "ko":
+        return f"{now.year}년 {now.month}월 {now.day}일"
+    if lang == "pt-BR":
+        return f"{now.day:02d} {_PT_BR_MONTHS[now.month]} {now.year}"
+    return now.strftime("%b %d, %Y")
+
+
+def update_changelog(
+    changelog_path: Path,
+    version: str,
+    release_notes: str,
+    lang: str = "en",
+) -> bool:
+    """Prepend a new release entry to a docs changelog file.
+
+    Args:
+        changelog_path: Path to the changelog.mdx file.
+        version: Version string (e.g., "1.9.3").
+        release_notes: Markdown release notes content.
+        lang: Language code for localized date/link text.
+
+    Returns:
+        True if changelog was updated, False otherwise.
+    """
+    if not changelog_path.exists():
+        return False
+
+    locale_cfg = _CHANGELOG_LOCALES.get(lang, _CHANGELOG_LOCALES["en"])
+    date_label = _format_changelog_date(lang)
+    link_text = locale_cfg["link_text"]
+
+    # Indent each non-empty line with 2 spaces to match <Update> block format
+    indented_lines = []
+    for line in release_notes.splitlines():
+        if line.strip():
+            indented_lines.append(f"  {line}")
+        else:
+            indented_lines.append("")
+    indented_notes = "\n".join(indented_lines)
+
+    entry = (
+        f'<Update label="{date_label}">\n'
+        f"  ## v{version}\n"
+        f"\n"
+        f"  [{link_text}]"
+        f"(https://github.com/crewAIInc/crewAI/releases/tag/{version})\n"
+        f"\n"
+        f"{indented_notes}\n"
+        f"\n"
+        f"</Update>"
+    )
+
+    content = changelog_path.read_text()
+
+    # Insert after the frontmatter closing ---
+    parts = content.split("---", 2)
+    if len(parts) >= 3:
+        new_content = (
+            parts[0]
+            + "---"
+            + parts[1]
+            + "---\n"
+            + entry
+            + "\n\n"
+            + parts[2].lstrip("\n")
+        )
+    else:
+        new_content = entry + "\n\n" + content
+
+    changelog_path.write_text(new_content)
+    return True
+
+
+def update_template_dependencies(templates_dir: Path, new_version: str) -> list[Path]:
+    """Update crewai dependency versions in CLI template pyproject.toml files.
+
+    Handles both pinned (==) and minimum (>=) version specifiers,
+    as well as extras like [tools].
+
+    Args:
+        templates_dir: Path to the CLI templates directory.
+        new_version: New version string.
+
+    Returns:
+        List of paths that were updated.
+    """
+    import re
+
+    updated = []
+    for pyproject in templates_dir.rglob("pyproject.toml"):
+        content = pyproject.read_text()
+        new_content = re.sub(
+            r'"crewai(\[tools\])?(==|>=)[^"]*"',
+            lambda m: f'"crewai{(m.group(1) or "")!s}=={new_version}"',
+            content,
+        )
+        if new_content != content:
+            pyproject.write_text(new_content)
+            updated.append(pyproject)
+
+    return updated
+
+
 def find_version_files(base_path: Path) -> list[Path]:
     """Find all __init__.py files that contain __version__.
 
@@ -394,6 +636,22 @@ def bump(version: str, dry_run: bool, no_push: bool, no_commit: bool) -> None:
                 "[yellow]Warning:[/yellow] No __version__ attributes found to update"
             )
 
+        # Update CLI template pyproject.toml files
+        templates_dir = lib_dir / "crewai" / "src" / "crewai" / "cli" / "templates"
+        if templates_dir.exists():
+            if dry_run:
+                for tpl in templates_dir.rglob("pyproject.toml"):
+                    console.print(
+                        f"[dim][DRY RUN][/dim] Would update template: {tpl.relative_to(cwd)}"
+                    )
+            else:
+                tpl_updated = update_template_dependencies(templates_dir, version)
+                for tpl in tpl_updated:
+                    console.print(
+                        f"[green]✓[/green] Updated template: {tpl.relative_to(cwd)}"
+                    )
+                    updated_files.append(tpl)
+
         if not dry_run:
             console.print("\nSyncing workspace...")
             run_command(["uv", "sync"])
@@ -575,9 +833,9 @@ def tag(dry_run: bool, no_edit: bool) -> None:
 
             github_contributors = get_github_contributors(commit_range)
 
-            if commits.strip():
-                client = OpenAI(api_key=os.getenv("OPENAI_API_KEY"))
+            openai_client = OpenAI(api_key=os.getenv("OPENAI_API_KEY"))
 
+            if commits.strip():
                 contributors_section = ""
                 if github_contributors:
                     contributors_section = f"\n\n## Contributors\n\n{', '.join([f'@{u}' for u in github_contributors])}"
@@ -588,7 +846,7 @@ def tag(dry_run: bool, no_edit: bool) -> None:
                     contributors_section=contributors_section,
                 )
 
-                response = client.chat.completions.create(
+                response = openai_client.chat.completions.create(
                     model="gpt-4o-mini",
                     messages=[
                         {
@@ -643,6 +901,77 @@ def tag(dry_run: bool, no_edit: bool) -> None:
                 "\n[green]✓[/green] Using generated release notes without editing"
             )
 
+        is_prerelease = any(
+            indicator in version.lower()
+            for indicator in ["a", "b", "rc", "alpha", "beta", "dev"]
+        )
+
+        # Update docs: changelogs + version switcher
+        docs_json_path = cwd / "docs" / "docs.json"
+        changelog_langs = ["en", "pt-BR", "ko"]
+        if not dry_run:
+            docs_files_staged = []
+
+            for lang in changelog_langs:
+                cl_path = cwd / "docs" / lang / "changelog.mdx"
+                if lang == "en":
+                    notes_for_lang = release_notes
+                else:
+                    console.print(f"[dim]Translating release notes to {lang}...[/dim]")
+                    notes_for_lang = translate_release_notes(
+                        release_notes, lang, openai_client
+                    )
+                if update_changelog(cl_path, version, notes_for_lang, lang=lang):
+                    console.print(
+                        f"[green]✓[/green] Updated {cl_path.relative_to(cwd)}"
+                    )
+                    docs_files_staged.append(str(cl_path))
+                else:
+                    console.print(
+                        f"[yellow]Warning:[/yellow] Changelog not found at {cl_path.relative_to(cwd)}"
+                    )
+
+            if not is_prerelease:
+                if add_docs_version(docs_json_path, version):
+                    console.print(
+                        f"[green]✓[/green] Added v{version} to docs version switcher"
+                    )
+                    docs_files_staged.append(str(docs_json_path))
+                else:
+                    console.print(
+                        f"[yellow]Warning:[/yellow] docs.json not found at {docs_json_path.relative_to(cwd)}"
+                    )
+
+            if docs_files_staged:
+                for f in docs_files_staged:
+                    run_command(["git", "add", f])
+                run_command(
+                    [
+                        "git",
+                        "commit",
+                        "-m",
+                        f"docs: update changelog and version for v{version}",
+                    ]
+                )
+                console.print("[green]✓[/green] Committed docs updates")
+                run_command(["git", "push"])
+                console.print("[green]✓[/green] Pushed docs updates")
+        else:
+            for lang in changelog_langs:
+                cl_path = cwd / "docs" / lang / "changelog.mdx"
+                translated = " (translated)" if lang != "en" else ""
+                console.print(
+                    f"[dim][DRY RUN][/dim] Would update {cl_path.relative_to(cwd)}{translated}"
+                )
+            if not is_prerelease:
+                console.print(
+                    f"[dim][DRY RUN][/dim] Would add v{version} to docs version switcher"
+                )
+            else:
+                console.print(
+                    "[dim][DRY RUN][/dim] Skipping docs version (pre-release)"
+                )
+
         if not dry_run:
             with console.status(f"[cyan]Creating tag {tag_name}..."):
                 try:
@@ -660,11 +989,6 @@ def tag(dry_run: bool, no_edit: bool) -> None:
                     sys.exit(1)
             console.print(f"[green]✓[/green] Pushed tag {tag_name}")
 
-            is_prerelease = any(
-                indicator in version.lower()
-                for indicator in ["a", "b", "rc", "alpha", "beta", "dev"]
-            )
-
             with console.status("[cyan]Creating GitHub Release..."):
                 try:
                     gh_cmd = [

lib/devtools/src/crewai_devtools/prompts.py

@@ -43,3 +43,18 @@ Instructions:
 
 Keep it professional and clear."""
 )
+
+
+TRANSLATE_RELEASE_NOTES_PROMPT = Template(
+    """Translate the following release notes into $language.
+
+$release_notes
+
+Instructions:
+- Translate all section headers and descriptions naturally
+- Keep markdown formatting (##, ###, -, etc.) exactly as-is
+- Keep all proper nouns, code identifiers, class names, and technical terms unchanged
+  (e.g. "CrewAI", "LiteAgent", "ChromaDB", "MCP", "@username")
+- Keep the ## Contributors section and GitHub usernames unchanged
+- Do not add or remove any content, only translate"""
+)

uv.lock

@@ -1096,6 +1096,7 @@ dependencies = [
     { name = "appdirs" },
     { name = "chromadb" },
     { name = "click" },
+    { name = "httpx" },
     { name = "instructor" },
     { name = "json-repair" },
     { name = "json5" },
@@ -1195,6 +1196,7 @@ requires-dist = [
     { name = "crewai-tools", marker = "extra == 'tools'", editable = "lib/crewai-tools" },
     { name = "docling", marker = "extra == 'docling'", specifier = "~=2.63.0" },
     { name = "google-genai", marker = "extra == 'google-genai'", specifier = "~=1.49.0" },
+    { name = "httpx", specifier = "~=0.28.1" },
     { name = "httpx-auth", marker = "extra == 'a2a'", specifier = "~=0.23.1" },
     { name = "httpx-sse", marker = "extra == 'a2a'", specifier = "~=0.4.0" },
     { name = "ibm-watsonx-ai", marker = "extra == 'watson'", specifier = "~=1.3.39" },
@@ -1469,48 +1471,48 @@ provides-extras = ["apify", "beautifulsoup4", "bedrock", "browserbase", "composi
 
 [[package]]
 name = "cryptography"
-version = "46.0.4"
+version = "46.0.5"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "cffi", marker = "platform_python_implementation != 'PyPy'" },
     { name = "typing-extensions", marker = "python_full_version < '3.11'" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/78/19/f748958276519adf6a0c1e79e7b8860b4830dda55ccdf29f2719b5fc499c/cryptography-46.0.4.tar.gz", hash = "sha256:bfd019f60f8abc2ed1b9be4ddc21cfef059c841d86d710bb69909a688cbb8f59", size = 749301, upload-time = "2026-01-28T00:24:37.379Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/60/04/ee2a9e8542e4fa2773b81771ff8349ff19cdd56b7258a0cc442639052edb/cryptography-46.0.5.tar.gz", hash = "sha256:abace499247268e3757271b2f1e244b36b06f8515cf27c4d49468fc9eb16e93d", size = 750064, upload-time = "2026-02-10T19:18:38.255Z" }
 wheels = [
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