fix: skip signal handler registration in non-main thread

When CrewAI is initialized from a non-main thread (e.g., in Streamlit,
Flask, Django, Jupyter), the telemetry module was printing multiple
ValueError tracebacks for each signal handler registration attempt.

This fix adds a proactive main thread check in _register_shutdown_handlers()
before attempting signal registration. If not in the main thread, a debug
message is logged and signal handler registration is skipped.

Fixes #4289

Co-Authored-By: João <joao@crewai.com>

lib/crewai-files/src/crewai_files/__init__.py

@@ -152,4 +152,4 @@ __all__ = [
     "wrap_file_source",
 ]
 
-__version__ = "1.9.1"
+__version__ = "1.9.0"

lib/crewai-tools/pyproject.toml

@@ -12,7 +12,7 @@ dependencies = [
     "pytube~=15.0.0",
     "requests~=2.32.5",
     "docker~=7.1.0",
-    "crewai==1.9.1",
+    "crewai==1.9.0",
     "lancedb~=0.5.4",
     "tiktoken~=0.8.0",
     "beautifulsoup4~=4.13.4",

lib/crewai-tools/src/crewai_tools/__init__.py

@@ -291,4 +291,4 @@ __all__ = [
     "ZapierActionTools",
 ]
 
-__version__ = "1.9.1"
+__version__ = "1.9.0"

lib/crewai-tools/src/crewai_tools/tools/crewai_platform_tools/crewai_platform_action_tool.py

@@ -1,11 +1,10 @@
 """Crewai Enterprise Tools."""
-
-import json
 import os
-from typing import Any
+import json
+import re
+from typing import Any, Optional, Union, cast, get_origin
 
 from crewai.tools import BaseTool
-from crewai.utilities.pydantic_schema_utils import create_model_from_schema
 from pydantic import Field, create_model
 import requests
 
@@ -15,6 +14,77 @@ from crewai_tools.tools.crewai_platform_tools.misc import (
 )
 
 
+class AllOfSchemaAnalyzer:
+    """Helper class to analyze and merge allOf schemas."""
+
+    def __init__(self, schemas: list[dict[str, Any]]):
+        self.schemas = schemas
+        self._explicit_types: list[str] = []
+        self._merged_properties: dict[str, Any] = {}
+        self._merged_required: list[str] = []
+        self._analyze_schemas()
+
+    def _analyze_schemas(self) -> None:
+        """Analyze all schemas and extract relevant information."""
+        for schema in self.schemas:
+            if "type" in schema:
+                self._explicit_types.append(schema["type"])
+
+            # Merge object properties
+            if schema.get("type") == "object" and "properties" in schema:
+                self._merged_properties.update(schema["properties"])
+                if "required" in schema:
+                    self._merged_required.extend(schema["required"])
+
+    def has_consistent_type(self) -> bool:
+        """Check if all schemas have the same explicit type."""
+        return len(set(self._explicit_types)) == 1 if self._explicit_types else False
+
+    def get_consistent_type(self) -> type[Any]:
+        """Get the consistent type if all schemas agree."""
+        if not self.has_consistent_type():
+            raise ValueError("No consistent type found")
+
+        type_mapping = {
+            "string": str,
+            "integer": int,
+            "number": float,
+            "boolean": bool,
+            "array": list,
+            "object": dict,
+            "null": type(None),
+        }
+        return type_mapping.get(self._explicit_types[0], str)
+
+    def has_object_schemas(self) -> bool:
+        """Check if any schemas are object types with properties."""
+        return bool(self._merged_properties)
+
+    def get_merged_properties(self) -> dict[str, Any]:
+        """Get merged properties from all object schemas."""
+        return self._merged_properties
+
+    def get_merged_required_fields(self) -> list[str]:
+        """Get merged required fields from all object schemas."""
+        return list(set(self._merged_required))  # Remove duplicates
+
+    def get_fallback_type(self) -> type[Any]:
+        """Get a fallback type when merging fails."""
+        if self._explicit_types:
+            # Use the first explicit type
+            type_mapping = {
+                "string": str,
+                "integer": int,
+                "number": float,
+                "boolean": bool,
+                "array": list,
+                "object": dict,
+                "null": type(None),
+            }
+            return type_mapping.get(self._explicit_types[0], str)
+        return str
+
+
 class CrewAIPlatformActionTool(BaseTool):
     action_name: str = Field(default="", description="The name of the action")
     action_schema: dict[str, Any] = Field(
@@ -27,19 +97,42 @@ class CrewAIPlatformActionTool(BaseTool):
         action_name: str,
         action_schema: dict[str, Any],
     ):
-        parameters = action_schema.get("function", {}).get("parameters", {})
+        self._model_registry: dict[str, type[Any]] = {}
+        self._base_name = self._sanitize_name(action_name)
+
+        schema_props, required = self._extract_schema_info(action_schema)
+
+        field_definitions: dict[str, Any] = {}
+        for param_name, param_details in schema_props.items():
+            param_desc = param_details.get("description", "")
+            is_required = param_name in required
 
-        if parameters and parameters.get("properties"):
             try:
-                if "title" not in parameters:
-                    parameters = {**parameters, "title": f"{action_name}Schema"}
-                if "type" not in parameters:
-                    parameters = {**parameters, "type": "object"}
-                args_schema = create_model_from_schema(parameters)
+                field_type = self._process_schema_type(
+                    param_details, self._sanitize_name(param_name).title()
+                )
             except Exception:
-                args_schema = create_model(f"{action_name}Schema")
+                field_type = str
+
+            field_definitions[param_name] = self._create_field_definition(
+                field_type, is_required, param_desc
+            )
+
+        if field_definitions:
+            try:
+                args_schema = create_model(
+                    f"{self._base_name}Schema", **field_definitions
+                )
+            except Exception:
+                args_schema = create_model(
+                    f"{self._base_name}Schema",
+                    input_text=(str, Field(description="Input for the action")),
+                )
         else:
-            args_schema = create_model(f"{action_name}Schema")
+            args_schema = create_model(
+                f"{self._base_name}Schema",
+                input_text=(str, Field(description="Input for the action")),
+            )
 
         super().__init__(
             name=action_name.lower().replace(" ", "_"),
@@ -49,12 +142,285 @@ class CrewAIPlatformActionTool(BaseTool):
         self.action_name = action_name
         self.action_schema = action_schema
 
-    def _run(self, **kwargs: Any) -> str:
+    @staticmethod
+    def _sanitize_name(name: str) -> str:
+        name = name.lower().replace(" ", "_")
+        sanitized = re.sub(r"[^a-zA-Z0-9_]", "", name)
+        parts = sanitized.split("_")
+        return "".join(word.capitalize() for word in parts if word)
+
+    @staticmethod
+    def _extract_schema_info(
+        action_schema: dict[str, Any],
+    ) -> tuple[dict[str, Any], list[str]]:
+        schema_props = (
+            action_schema.get("function", {})
+            .get("parameters", {})
+            .get("properties", {})
+        )
+        required = (
+            action_schema.get("function", {}).get("parameters", {}).get("required", [])
+        )
+        return schema_props, required
+
+    def _process_schema_type(self, schema: dict[str, Any], type_name: str) -> type[Any]:
+        """
+        Process a JSON Schema type definition into a Python type.
+
+        Handles complex schema constructs like anyOf, oneOf, allOf, enums, arrays, and objects.
+        """
+        # Handle composite schema types (anyOf, oneOf, allOf)
+        if composite_type := self._process_composite_schema(schema, type_name):
+            return composite_type
+
+        # Handle primitive types and simple constructs
+        return self._process_primitive_schema(schema, type_name)
+
+    def _process_composite_schema(
+        self, schema: dict[str, Any], type_name: str
+    ) -> type[Any] | None:
+        """Process composite schema types: anyOf, oneOf, allOf."""
+        if "anyOf" in schema:
+            return self._process_any_of_schema(schema["anyOf"], type_name)
+        if "oneOf" in schema:
+            return self._process_one_of_schema(schema["oneOf"], type_name)
+        if "allOf" in schema:
+            return self._process_all_of_schema(schema["allOf"], type_name)
+        return None
+
+    def _process_any_of_schema(
+        self, any_of_types: list[dict[str, Any]], type_name: str
+    ) -> type[Any]:
+        """Process anyOf schema - creates Union of possible types."""
+        is_nullable = any(t.get("type") == "null" for t in any_of_types)
+        non_null_types = [t for t in any_of_types if t.get("type") != "null"]
+
+        if not non_null_types:
+            return cast(
+                type[Any], cast(object, str | None)
+            )  # fallback for only-null case
+
+        base_type = (
+            self._process_schema_type(non_null_types[0], type_name)
+            if len(non_null_types) == 1
+            else self._create_union_type(non_null_types, type_name, "AnyOf")
+        )
+        return base_type | None if is_nullable else base_type  # type: ignore[return-value]
+
+    def _process_one_of_schema(
+        self, one_of_types: list[dict[str, Any]], type_name: str
+    ) -> type[Any]:
+        """Process oneOf schema - creates Union of mutually exclusive types."""
+        return (
+            self._process_schema_type(one_of_types[0], type_name)
+            if len(one_of_types) == 1
+            else self._create_union_type(one_of_types, type_name, "OneOf")
+        )
+
+    def _process_all_of_schema(
+        self, all_of_schemas: list[dict[str, Any]], type_name: str
+    ) -> type[Any]:
+        """Process allOf schema - merges schemas that must all be satisfied."""
+        if len(all_of_schemas) == 1:
+            return self._process_schema_type(all_of_schemas[0], type_name)
+        return self._merge_all_of_schemas(all_of_schemas, type_name)
+
+    def _create_union_type(
+        self, schemas: list[dict[str, Any]], type_name: str, prefix: str
+    ) -> type[Any]:
+        """Create a Union type from multiple schemas."""
+        return Union[  # type: ignore  # noqa: UP007
+            tuple(
+                self._process_schema_type(schema, f"{type_name}{prefix}{i}")
+                for i, schema in enumerate(schemas)
+            )
+        ]
+
+    def _process_primitive_schema(
+        self, schema: dict[str, Any], type_name: str
+    ) -> type[Any]:
+        """Process primitive schema types: string, number, array, object, etc."""
+        json_type = schema.get("type", "string")
+
+        if "enum" in schema:
+            return self._process_enum_schema(schema, json_type)
+
+        if json_type == "array":
+            return self._process_array_schema(schema, type_name)
+
+        if json_type == "object":
+            return self._create_nested_model(schema, type_name)
+
+        return self._map_json_type_to_python(json_type)
+
+    def _process_enum_schema(self, schema: dict[str, Any], json_type: str) -> type[Any]:
+        """Process enum schema - currently falls back to base type."""
+        enum_values = schema["enum"]
+        if not enum_values:
+            return self._map_json_type_to_python(json_type)
+
+        # For Literal types, we need to pass the values directly, not as a tuple
+        # This is a workaround since we can't dynamically create Literal types easily
+        # Fall back to the base JSON type for now
+        return self._map_json_type_to_python(json_type)
+
+    def _process_array_schema(
+        self, schema: dict[str, Any], type_name: str
+    ) -> type[Any]:
+        items_schema = schema.get("items", {"type": "string"})
+        item_type = self._process_schema_type(items_schema, f"{type_name}Item")
+        return list[item_type]  # type: ignore
+
+    def _merge_all_of_schemas(
+        self, schemas: list[dict[str, Any]], type_name: str
+    ) -> type[Any]:
+        schema_analyzer = AllOfSchemaAnalyzer(schemas)
+
+        if schema_analyzer.has_consistent_type():
+            return schema_analyzer.get_consistent_type()
+
+        if schema_analyzer.has_object_schemas():
+            return self._create_merged_object_model(
+                schema_analyzer.get_merged_properties(),
+                schema_analyzer.get_merged_required_fields(),
+                type_name,
+            )
+
+        return schema_analyzer.get_fallback_type()
+
+    def _create_merged_object_model(
+        self, properties: dict[str, Any], required: list[str], model_name: str
+    ) -> type[Any]:
+        full_model_name = f"{self._base_name}{model_name}AllOf"
+
+        if full_model_name in self._model_registry:
+            return self._model_registry[full_model_name]
+
+        if not properties:
+            return dict
+
+        field_definitions = self._build_field_definitions(
+            properties, required, model_name
+        )
+
+        try:
+            merged_model = create_model(full_model_name, **field_definitions)
+            self._model_registry[full_model_name] = merged_model
+            return merged_model
+        except Exception:
+            return dict
+
+    def _build_field_definitions(
+        self, properties: dict[str, Any], required: list[str], model_name: str
+    ) -> dict[str, Any]:
+        field_definitions = {}
+
+        for prop_name, prop_schema in properties.items():
+            prop_desc = prop_schema.get("description", "")
+            is_required = prop_name in required
+
+            try:
+                prop_type = self._process_schema_type(
+                    prop_schema, f"{model_name}{self._sanitize_name(prop_name).title()}"
+                )
+            except Exception:
+                prop_type = str
+
+            field_definitions[prop_name] = self._create_field_definition(
+                prop_type, is_required, prop_desc
+            )
+
+        return field_definitions
+
+    def _create_nested_model(
+        self, schema: dict[str, Any], model_name: str
+    ) -> type[Any]:
+        full_model_name = f"{self._base_name}{model_name}"
+
+        if full_model_name in self._model_registry:
+            return self._model_registry[full_model_name]
+
+        properties = schema.get("properties", {})
+        required_fields = schema.get("required", [])
+
+        if not properties:
+            return dict
+
+        field_definitions = {}
+        for prop_name, prop_schema in properties.items():
+            prop_desc = prop_schema.get("description", "")
+            is_required = prop_name in required_fields
+
+            try:
+                prop_type = self._process_schema_type(
+                    prop_schema, f"{model_name}{self._sanitize_name(prop_name).title()}"
+                )
+            except Exception:
+                prop_type = str
+
+            field_definitions[prop_name] = self._create_field_definition(
+                prop_type, is_required, prop_desc
+            )
+
+        try:
+            nested_model = create_model(full_model_name, **field_definitions)  # type: ignore
+            self._model_registry[full_model_name] = nested_model
+            return nested_model
+        except Exception:
+            return dict
+
+    def _create_field_definition(
+        self, field_type: type[Any], is_required: bool, description: str
+    ) -> tuple:
+        if is_required:
+            return (field_type, Field(description=description))
+        if get_origin(field_type) is Union:
+            return (field_type, Field(default=None, description=description))
+        return (
+            Optional[field_type],  # noqa: UP045
+            Field(default=None, description=description),
+        )
+
+    def _map_json_type_to_python(self, json_type: str) -> type[Any]:
+        type_mapping = {
+            "string": str,
+            "integer": int,
+            "number": float,
+            "boolean": bool,
+            "array": list,
+            "object": dict,
+            "null": type(None),
+        }
+        return type_mapping.get(json_type, str)
+
+    def _get_required_nullable_fields(self) -> list[str]:
+        schema_props, required = self._extract_schema_info(self.action_schema)
+
+        required_nullable_fields = []
+        for param_name in required:
+            param_details = schema_props.get(param_name, {})
+            if self._is_nullable_type(param_details):
+                required_nullable_fields.append(param_name)
+
+        return required_nullable_fields
+
+    def _is_nullable_type(self, schema: dict[str, Any]) -> bool:
+        if "anyOf" in schema:
+            return any(t.get("type") == "null" for t in schema["anyOf"])
+        return schema.get("type") == "null"
+
+    def _run(self, **kwargs) -> str:
         try:
             cleaned_kwargs = {
                 key: value for key, value in kwargs.items() if value is not None
             }
 
+            required_nullable_fields = self._get_required_nullable_fields()
+
+            for field_name in required_nullable_fields:
+                if field_name not in cleaned_kwargs:
+                    cleaned_kwargs[field_name] = None
+
             api_url = (
                 f"{get_platform_api_base_url()}/actions/{self.action_name}/execute"
             )
@@ -63,9 +429,7 @@ class CrewAIPlatformActionTool(BaseTool):
                 "Authorization": f"Bearer {token}",
                 "Content-Type": "application/json",
             }
-            payload = {
-                "integration": cleaned_kwargs if cleaned_kwargs else {"_noop": True}
-            }
+            payload = cleaned_kwargs
 
             response = requests.post(
                 url=api_url,
@@ -77,14 +441,7 @@ class CrewAIPlatformActionTool(BaseTool):
 
             data = response.json()
             if not response.ok:
-                if isinstance(data, dict):
-                    error_info = data.get("error", {})
-                    if isinstance(error_info, dict):
-                        error_message = error_info.get("message", json.dumps(data))
-                    else:
-                        error_message = str(error_info)
-                else:
-                    error_message = str(data)
+                error_message = data.get("error", {}).get("message", json.dumps(data))
                 return f"API request failed: {error_message}"
 
             return json.dumps(data, indent=2)

lib/crewai-tools/src/crewai_tools/tools/crewai_platform_tools/crewai_platform_tool_builder.py

@@ -1,10 +1,5 @@
-"""CrewAI platform tool builder for fetching and creating action tools."""
-
-import logging
-import os
-from types import TracebackType
 from typing import Any
-
+import os
 from crewai.tools import BaseTool
 import requests
 
@@ -17,29 +12,22 @@ from crewai_tools.tools.crewai_platform_tools.misc import (
 )
 
 
-logger = logging.getLogger(__name__)
-
-
 class CrewaiPlatformToolBuilder:
-    """Builds platform tools from remote action schemas."""
-
     def __init__(
         self,
         apps: list[str],
-    ) -> None:
+    ):
         self._apps = apps
-        self._actions_schema: dict[str, dict[str, Any]] = {}
-        self._tools: list[BaseTool] | None = None
+        self._actions_schema = {}  # type: ignore[var-annotated]
+        self._tools = None
 
     def tools(self) -> list[BaseTool]:
-        """Fetch actions and return built tools."""
         if self._tools is None:
             self._fetch_actions()
             self._create_tools()
         return self._tools if self._tools is not None else []
 
-    def _fetch_actions(self) -> None:
-        """Fetch action schemas from the platform API."""
+    def _fetch_actions(self):
         actions_url = f"{get_platform_api_base_url()}/actions"
         headers = {"Authorization": f"Bearer {get_platform_integration_token()}"}
 
@@ -52,8 +40,7 @@ class CrewaiPlatformToolBuilder:
                 verify=os.environ.get("CREWAI_FACTORY", "false").lower() != "true",
             )
             response.raise_for_status()
-        except Exception as e:
-            logger.error(f"Failed to fetch platform tools for apps {self._apps}: {e}")
+        except Exception:
             return
 
         raw_data = response.json()
@@ -64,8 +51,6 @@ class CrewaiPlatformToolBuilder:
         for app, action_list in action_categories.items():
             if isinstance(action_list, list):
                 for action in action_list:
-                    if not isinstance(action, dict):
-                        continue
                     if action_name := action.get("name"):
                         action_schema = {
                             "function": {
@@ -79,16 +64,72 @@ class CrewaiPlatformToolBuilder:
                         }
                         self._actions_schema[action_name] = action_schema
 
-    def _create_tools(self) -> None:
-        """Create tool instances from fetched action schemas."""
-        tools: list[BaseTool] = []
+    def _generate_detailed_description(
+        self, schema: dict[str, Any], indent: int = 0
+    ) -> list[str]:
+        descriptions = []
+        indent_str = "  " * indent
+
+        schema_type = schema.get("type", "string")
+
+        if schema_type == "object":
+            properties = schema.get("properties", {})
+            required_fields = schema.get("required", [])
+
+            if properties:
+                descriptions.append(f"{indent_str}Object with properties:")
+                for prop_name, prop_schema in properties.items():
+                    prop_desc = prop_schema.get("description", "")
+                    is_required = prop_name in required_fields
+                    req_str = " (required)" if is_required else " (optional)"
+                    descriptions.append(
+                        f"{indent_str}  - {prop_name}: {prop_desc}{req_str}"
+                    )
+
+                    if prop_schema.get("type") == "object":
+                        descriptions.extend(
+                            self._generate_detailed_description(prop_schema, indent + 2)
+                        )
+                    elif prop_schema.get("type") == "array":
+                        items_schema = prop_schema.get("items", {})
+                        if items_schema.get("type") == "object":
+                            descriptions.append(f"{indent_str}    Array of objects:")
+                            descriptions.extend(
+                                self._generate_detailed_description(
+                                    items_schema, indent + 3
+                                )
+                            )
+                        elif "enum" in items_schema:
+                            descriptions.append(
+                                f"{indent_str}    Array of enum values: {items_schema['enum']}"
+                            )
+                    elif "enum" in prop_schema:
+                        descriptions.append(
+                            f"{indent_str}    Enum values: {prop_schema['enum']}"
+                        )
+
+        return descriptions
+
+    def _create_tools(self):
+        tools = []
 
         for action_name, action_schema in self._actions_schema.items():
             function_details = action_schema.get("function", {})
             description = function_details.get("description", f"Execute {action_name}")
 
+            parameters = function_details.get("parameters", {})
+            param_descriptions = []
+
+            if parameters.get("properties"):
+                param_descriptions.append("\nDetailed Parameter Structure:")
+                param_descriptions.extend(
+                    self._generate_detailed_description(parameters)
+                )
+
+            full_description = description + "\n".join(param_descriptions)
+
             tool = CrewAIPlatformActionTool(
-                description=description,
+                description=full_description,
                 action_name=action_name,
                 action_schema=action_schema,
             )
@@ -97,14 +138,8 @@ class CrewaiPlatformToolBuilder:
 
         self._tools = tools
 
-    def __enter__(self) -> list[BaseTool]:
-        """Enter context manager and return tools."""
+    def __enter__(self):
         return self.tools()
 
-    def __exit__(
-        self,
-        exc_type: type[BaseException] | None,
-        exc_val: BaseException | None,
-        exc_tb: TracebackType | None,
-    ) -> None:
-        """Exit context manager."""
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        pass

lib/crewai-tools/tests/tools/crewai_platform_tools/test_crewai_platform_action_tool.py

@@ -1,3 +1,4 @@
+from typing import Union, get_args, get_origin
 from unittest.mock import patch, Mock
 import os
 
@@ -6,6 +7,251 @@ from crewai_tools.tools.crewai_platform_tools.crewai_platform_action_tool import
 )
 
 
+class TestSchemaProcessing:
+
+    def setup_method(self):
+        self.base_action_schema = {
+            "function": {
+                "parameters": {
+                    "properties": {},
+                    "required": []
+                }
+            }
+        }
+
+    def create_test_tool(self, action_name="test_action"):
+        return CrewAIPlatformActionTool(
+            description="Test tool",
+            action_name=action_name,
+            action_schema=self.base_action_schema
+        )
+
+    def test_anyof_multiple_types(self):
+        tool = self.create_test_tool()
+
+        test_schema = {
+            "anyOf": [
+                {"type": "string"},
+                {"type": "number"},
+                {"type": "integer"}
+            ]
+        }
+
+        result_type = tool._process_schema_type(test_schema, "TestField")
+
+        assert get_origin(result_type) is Union
+
+        args = get_args(result_type)
+        expected_types = (str, float, int)
+
+        for expected_type in expected_types:
+            assert expected_type in args
+
+    def test_anyof_with_null(self):
+        tool = self.create_test_tool()
+
+        test_schema = {
+            "anyOf": [
+                {"type": "string"},
+                {"type": "number"},
+                {"type": "null"}
+            ]
+        }
+
+        result_type = tool._process_schema_type(test_schema, "TestFieldNullable")
+
+        assert get_origin(result_type) is Union
+
+        args = get_args(result_type)
+        assert type(None) in args
+        assert str in args
+        assert float in args
+
+    def test_anyof_single_type(self):
+        tool = self.create_test_tool()
+
+        test_schema = {
+            "anyOf": [
+                {"type": "string"}
+            ]
+        }
+
+        result_type = tool._process_schema_type(test_schema, "TestFieldSingle")
+
+        assert result_type is str
+
+    def test_oneof_multiple_types(self):
+        tool = self.create_test_tool()
+
+        test_schema = {
+            "oneOf": [
+                {"type": "string"},
+                {"type": "boolean"}
+            ]
+        }
+
+        result_type = tool._process_schema_type(test_schema, "TestFieldOneOf")
+
+        assert get_origin(result_type) is Union
+
+        args = get_args(result_type)
+        expected_types = (str, bool)
+
+        for expected_type in expected_types:
+            assert expected_type in args
+
+    def test_oneof_single_type(self):
+        tool = self.create_test_tool()
+
+        test_schema = {
+            "oneOf": [
+                {"type": "integer"}
+            ]
+        }
+
+        result_type = tool._process_schema_type(test_schema, "TestFieldOneOfSingle")
+
+        assert result_type is int
+
+    def test_basic_types(self):
+        tool = self.create_test_tool()
+
+        test_cases = [
+            ({"type": "string"}, str),
+            ({"type": "integer"}, int),
+            ({"type": "number"}, float),
+            ({"type": "boolean"}, bool),
+            ({"type": "array", "items": {"type": "string"}}, list),
+        ]
+
+        for schema, expected_type in test_cases:
+            result_type = tool._process_schema_type(schema, "TestField")
+            if schema["type"] == "array":
+                assert get_origin(result_type) is list
+            else:
+                assert result_type is expected_type
+
+    def test_enum_handling(self):
+        tool = self.create_test_tool()
+
+        test_schema = {
+            "type": "string",
+            "enum": ["option1", "option2", "option3"]
+        }
+
+        result_type = tool._process_schema_type(test_schema, "TestFieldEnum")
+
+        assert result_type is str
+
+    def test_nested_anyof(self):
+        tool = self.create_test_tool()
+
+        test_schema = {
+            "anyOf": [
+                {"type": "string"},
+                {
+                    "anyOf": [
+                        {"type": "integer"},
+                        {"type": "boolean"}
+                    ]
+                }
+            ]
+        }
+
+        result_type = tool._process_schema_type(test_schema, "TestFieldNested")
+
+        assert get_origin(result_type) is Union
+        args = get_args(result_type)
+
+        assert str in args
+
+        if len(args) == 3:
+            assert int in args
+            assert bool in args
+        else:
+            nested_union = next(arg for arg in args if get_origin(arg) is Union)
+            nested_args = get_args(nested_union)
+            assert int in nested_args
+            assert bool in nested_args
+
+    def test_allof_same_types(self):
+        tool = self.create_test_tool()
+
+        test_schema = {
+            "allOf": [
+                {"type": "string"},
+                {"type": "string", "maxLength": 100}
+            ]
+        }
+
+        result_type = tool._process_schema_type(test_schema, "TestFieldAllOfSame")
+
+        assert result_type is str
+
+    def test_allof_object_merge(self):
+        tool = self.create_test_tool()
+
+        test_schema = {
+            "allOf": [
+                {
+                    "type": "object",
+                    "properties": {
+                        "name": {"type": "string"},
+                        "age": {"type": "integer"}
+                    },
+                    "required": ["name"]
+                },
+                {
+                    "type": "object",
+                    "properties": {
+                        "email": {"type": "string"},
+                            "age": {"type": "integer"}
+                    },
+                    "required": ["email"]
+                }
+            ]
+        }
+
+        result_type = tool._process_schema_type(test_schema, "TestFieldAllOfMerged")
+
+        # Should create a merged model with all properties
+        # The implementation might fall back to dict if model creation fails
+        # Let's just verify it's not a basic scalar type
+        assert result_type is not str
+        assert result_type is not int
+        assert result_type is not bool
+        # It could be dict (fallback) or a proper model class
+        assert result_type in (dict, type) or hasattr(result_type, '__name__')
+
+    def test_allof_single_schema(self):
+        """Test that allOf with single schema works correctly."""
+        tool = self.create_test_tool()
+
+        test_schema = {
+            "allOf": [
+                {"type": "boolean"}
+            ]
+        }
+
+        result_type = tool._process_schema_type(test_schema, "TestFieldAllOfSingle")
+
+        # Should be just bool
+        assert result_type is bool
+
+    def test_allof_mixed_types(self):
+        tool = self.create_test_tool()
+
+        test_schema = {
+            "allOf": [
+                {"type": "string"},
+                {"type": "integer"}
+            ]
+        }
+
+        result_type = tool._process_schema_type(test_schema, "TestFieldAllOfMixed")
+
+        assert result_type is str
+
 class TestCrewAIPlatformActionToolVerify:
     """Test suite for SSL verification behavior based on CREWAI_FACTORY environment variable"""
 

lib/crewai-tools/tests/tools/crewai_platform_tools/test_crewai_platform_tool_builder.py

@@ -224,6 +224,43 @@ class TestCrewaiPlatformToolBuilder(unittest.TestCase):
             _, kwargs = mock_get.call_args
             assert kwargs["params"]["apps"] == ""
 
+    def test_detailed_description_generation(self):
+        builder = CrewaiPlatformToolBuilder(apps=["test"])
+
+        complex_schema = {
+            "type": "object",
+            "properties": {
+                "simple_string": {"type": "string", "description": "A simple string"},
+                "nested_object": {
+                    "type": "object",
+                    "properties": {
+                        "inner_prop": {
+                            "type": "integer",
+                            "description": "Inner property",
+                        }
+                    },
+                    "description": "Nested object",
+                },
+                "array_prop": {
+                    "type": "array",
+                    "items": {"type": "string"},
+                    "description": "Array of strings",
+                },
+            },
+        }
+
+        descriptions = builder._generate_detailed_description(complex_schema)
+
+        assert isinstance(descriptions, list)
+        assert len(descriptions) > 0
+
+        description_text = "\n".join(descriptions)
+        assert "simple_string" in description_text
+        assert "nested_object" in description_text
+        assert "array_prop" in description_text
+
+
+
 class TestCrewaiPlatformToolBuilderVerify(unittest.TestCase):
     """Test suite for SSL verification behavior in CrewaiPlatformToolBuilder"""
 

lib/crewai/pyproject.toml

@@ -49,7 +49,7 @@ Repository = "https://github.com/crewAIInc/crewAI"
 
 [project.optional-dependencies]
 tools = [
-    "crewai-tools==1.9.1",
+    "crewai-tools==1.9.0",
 ]
 embeddings = [
     "tiktoken~=0.8.0"

lib/crewai/src/crewai/__init__.py

@@ -40,7 +40,7 @@ def _suppress_pydantic_deprecation_warnings() -> None:
 
 _suppress_pydantic_deprecation_warnings()
 
-__version__ = "1.9.1"
+__version__ = "1.9.0"
 _telemetry_submitted = False
 
 

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

@@ -28,11 +28,6 @@ from crewai.hooks.llm_hooks import (
     get_after_llm_call_hooks,
     get_before_llm_call_hooks,
 )
-from crewai.hooks.tool_hooks import (
-    ToolCallHookContext,
-    get_after_tool_call_hooks,
-    get_before_tool_call_hooks,
-)
 from crewai.utilities.agent_utils import (
     aget_llm_response,
     convert_tools_to_openai_schema,
@@ -754,41 +749,8 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
 
         track_delegation_if_needed(func_name, args_dict, self.task)
 
-        # Find the structured tool for hook context
-        structured_tool = None
-        for tool in self.tools or []:
-            if sanitize_tool_name(tool.name) == func_name:
-                structured_tool = tool
-                break
-
-        # Execute before_tool_call hooks
-        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:
-            self._printer.print(
-                content=f"Error in before_tool_call hook: {hook_error}",
-                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:
+        # Execute the tool (only if not cached and not at max usage)
+        if not from_cache and not max_usage_reached:
             result = "Tool not found"
             if func_name in available_functions:
                 try:
@@ -836,28 +798,6 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
             # 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."
 
-        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:
-                hook_result = after_hook(after_hook_context)
-                if hook_result is not None:
-                    result = hook_result
-                    after_hook_context.tool_result = result
-        except Exception as hook_error:
-            self._printer.print(
-                content=f"Error in after_tool_call hook: {hook_error}",
-                color="red",
-            )
-
         # Emit tool usage finished event
         crewai_event_bus.emit(
             self,

lib/crewai/src/crewai/cli/templates/crew/pyproject.toml

@@ -5,7 +5,7 @@ description = "{{name}} using crewAI"
 authors = [{ name = "Your Name", email = "you@example.com" }]
 requires-python = ">=3.10,<3.14"
 dependencies = [
-    "crewai[tools]==1.9.1"
+    "crewai[tools]==1.9.0"
 ]
 
 [project.scripts]

lib/crewai/src/crewai/cli/templates/flow/pyproject.toml

@@ -5,7 +5,7 @@ description = "{{name}} using crewAI"
 authors = [{ name = "Your Name", email = "you@example.com" }]
 requires-python = ">=3.10,<3.14"
 dependencies = [
-    "crewai[tools]==1.9.1"
+    "crewai[tools]==1.9.0"
 ]
 
 [project.scripts]

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

@@ -36,12 +36,6 @@ from crewai.hooks.llm_hooks import (
     get_after_llm_call_hooks,
     get_before_llm_call_hooks,
 )
-from crewai.hooks.tool_hooks import (
-    ToolCallHookContext,
-    get_after_tool_call_hooks,
-    get_before_tool_call_hooks,
-)
-from crewai.hooks.types import AfterLLMCallHookType, BeforeLLMCallHookType
 from crewai.utilities.agent_utils import (
     convert_tools_to_openai_schema,
     enforce_rpm_limit,
@@ -191,8 +185,8 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
 
         self._instance_id = str(uuid4())[:8]
 
-        self.before_llm_call_hooks: list[BeforeLLMCallHookType] = []
-        self.after_llm_call_hooks: list[AfterLLMCallHookType] = []
+        self.before_llm_call_hooks: list[Callable] = []
+        self.after_llm_call_hooks: list[Callable] = []
         self.before_llm_call_hooks.extend(get_before_llm_call_hooks())
         self.after_llm_call_hooks.extend(get_after_llm_call_hooks())
 
@@ -305,21 +299,11 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
         """Compatibility property for mixin - returns state messages."""
         return self._state.messages
 
-    @messages.setter
-    def messages(self, value: list[LLMMessage]) -> None:
-        """Set state messages."""
-        self._state.messages = value
-
     @property
     def iterations(self) -> int:
         """Compatibility property for mixin - returns state iterations."""
         return self._state.iterations
 
-    @iterations.setter
-    def iterations(self, value: int) -> None:
-        """Set state iterations."""
-        self._state.iterations = value
-
     @start()
     def initialize_reasoning(self) -> Literal["initialized"]:
         """Initialize the reasoning flow and emit agent start logs."""
@@ -593,12 +577,6 @@ 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
-                )
             self.state.messages.append(assistant_message)
 
         # Now execute each tool
@@ -633,12 +611,14 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
 
             # 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
+            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
 
             # Check cache before executing
             from_cache = False
@@ -670,37 +650,8 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
 
             track_delegation_if_needed(func_name, args_dict, self.task)
 
-            structured_tool = None
-            for tool in self.tools or []:
-                if sanitize_tool_name(tool.name) == func_name:
-                    structured_tool = tool
-                    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:
-                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:
+            # Execute the tool (only if not cached and not at max usage)
+            if not from_cache and not max_usage_reached:
                 result = "Tool not found"
                 if func_name in self._available_functions:
                     try:
@@ -710,7 +661,11 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
                         # Add to cache after successful execution (before string conversion)
                         if self.tools_handler and self.tools_handler.cache:
                             should_cache = True
-                            if original_tool:
+                            if (
+                                original_tool
+                                and hasattr(original_tool, "cache_function")
+                                and original_tool.cache_function
+                            ):
                                 should_cache = original_tool.cache_function(
                                     args_dict, raw_result
                                 )
@@ -741,33 +696,10 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
                                 error=e,
                             ),
                         )
-            elif max_usage_reached and original_tool:
+            elif max_usage_reached:
                 # 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:
-                    hook_result = after_hook(after_hook_context)
-                    if hook_result is not None:
-                        result = hook_result
-                        after_hook_context.tool_result = result
-            except Exception as hook_error:
-                self._printer.print(
-                    content=f"Error in after_tool_call hook: {hook_error}",
-                    color="red",
-                )
-
             # Emit tool usage finished event
             crewai_event_bus.emit(
                 self,
@@ -901,10 +833,6 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
     @listen("parser_error")
     def recover_from_parser_error(self) -> Literal["initialized"]:
         """Recover from output parser errors and retry."""
-        if not self._last_parser_error:
-            self.state.iterations += 1
-            return "initialized"
-
         formatted_answer = handle_output_parser_exception(
             e=self._last_parser_error,
             messages=list(self.state.messages),

lib/crewai/src/crewai/hooks/llm_hooks.py

@@ -9,7 +9,6 @@ from crewai.utilities.printer import Printer
 
 if TYPE_CHECKING:
     from crewai.agents.crew_agent_executor import CrewAgentExecutor
-    from crewai.experimental.agent_executor import AgentExecutor
     from crewai.lite_agent import LiteAgent
     from crewai.llms.base_llm import BaseLLM
     from crewai.utilities.types import LLMMessage
@@ -42,7 +41,7 @@ class LLMCallHookContext:
             Can be modified by returning a new string from after_llm_call hook.
     """
 
-    executor: CrewAgentExecutor | AgentExecutor | LiteAgent | None
+    executor: CrewAgentExecutor | LiteAgent | None
     messages: list[LLMMessage]
     agent: Any
     task: Any
@@ -53,7 +52,7 @@ class LLMCallHookContext:
 
     def __init__(
         self,
-        executor: CrewAgentExecutor | AgentExecutor | LiteAgent | None = None,
+        executor: CrewAgentExecutor | LiteAgent | None = None,
         response: str | None = None,
         messages: list[LLMMessage] | None = None,
         llm: BaseLLM | str | Any | None = None,  # TODO: look into

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

@@ -16,7 +16,6 @@ from crewai.utilities.agent_utils import is_context_length_exceeded
 from crewai.utilities.exceptions.context_window_exceeding_exception import (
     LLMContextLengthExceededError,
 )
-from crewai.utilities.pydantic_schema_utils import generate_model_description
 from crewai.utilities.types import LLMMessage
 
 
@@ -549,11 +548,7 @@ class BedrockCompletion(BaseLLM):
                 "toolSpec": {
                     "name": "structured_output",
                     "description": "Returns structured data according to the schema",
-                    "inputSchema": {
-                        "json": generate_model_description(response_model)
-                        .get("json_schema", {})
-                        .get("schema", {})
-                    },
+                    "inputSchema": {"json": response_model.model_json_schema()},
                 }
             }
             body["toolConfig"] = cast(
@@ -784,11 +779,7 @@ class BedrockCompletion(BaseLLM):
                 "toolSpec": {
                     "name": "structured_output",
                     "description": "Returns structured data according to the schema",
-                    "inputSchema": {
-                        "json": generate_model_description(response_model)
-                        .get("json_schema", {})
-                        .get("schema", {})
-                    },
+                    "inputSchema": {"json": response_model.model_json_schema()},
                 }
             }
             body["toolConfig"] = cast(
@@ -1020,11 +1011,7 @@ class BedrockCompletion(BaseLLM):
                 "toolSpec": {
                     "name": "structured_output",
                     "description": "Returns structured data according to the schema",
-                    "inputSchema": {
-                        "json": generate_model_description(response_model)
-                        .get("json_schema", {})
-                        .get("schema", {})
-                    },
+                    "inputSchema": {"json": response_model.model_json_schema()},
                 }
             }
             body["toolConfig"] = cast(
@@ -1236,11 +1223,7 @@ class BedrockCompletion(BaseLLM):
                 "toolSpec": {
                     "name": "structured_output",
                     "description": "Returns structured data according to the schema",
-                    "inputSchema": {
-                        "json": generate_model_description(response_model)
-                        .get("json_schema", {})
-                        .get("schema", {})
-                    },
+                    "inputSchema": {"json": response_model.model_json_schema()},
                 }
             }
             body["toolConfig"] = cast(

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

@@ -15,7 +15,6 @@ from crewai.utilities.agent_utils import is_context_length_exceeded
 from crewai.utilities.exceptions.context_window_exceeding_exception import (
     LLMContextLengthExceededError,
 )
-from crewai.utilities.pydantic_schema_utils import generate_model_description
 from crewai.utilities.types import LLMMessage
 
 
@@ -465,10 +464,7 @@ class GeminiCompletion(BaseLLM):
 
         if response_model:
             config_params["response_mime_type"] = "application/json"
-            schema_output = generate_model_description(response_model)
-            config_params["response_schema"] = schema_output.get("json_schema", {}).get(
-                "schema", {}
-            )
+            config_params["response_schema"] = response_model.model_json_schema()
 
         # Handle tools for supported models
         if tools and self.supports_tools:
@@ -493,7 +489,7 @@ class GeminiCompletion(BaseLLM):
             function_declaration = types.FunctionDeclaration(
                 name=name,
                 description=description,
-                parameters_json_schema=parameters if parameters else None,
+                parameters=parameters if parameters else None,
             )
 
             gemini_tool = types.Tool(function_declarations=[function_declaration])
@@ -547,10 +543,11 @@ class GeminiCompletion(BaseLLM):
             else:
                 parts.append(types.Part.from_text(text=str(content) if content else ""))
 
-            text_content: str = " ".join(p.text for p in parts if p.text is not None)
-
             if role == "system":
                 # Extract system instruction - Gemini handles it separately
+                text_content = " ".join(
+                    p.text for p in parts if hasattr(p, "text") and p.text
+                )
                 if system_instruction:
                     system_instruction += f"\n\n{text_content}"
                 else:
@@ -579,40 +576,31 @@ class GeminiCompletion(BaseLLM):
                     types.Content(role="user", parts=[function_response_part])
                 )
             elif role == "assistant" and message.get("tool_calls"):
-                raw_parts: list[Any] | None = message.get("raw_tool_call_parts")
-                if raw_parts and all(isinstance(p, types.Part) for p in raw_parts):
-                    tool_parts: list[types.Part] = list(raw_parts)
-                    if text_content:
-                        tool_parts.insert(0, types.Part.from_text(text=text_content))
-                else:
-                    tool_parts = []
-                    if text_content:
-                        tool_parts.append(types.Part.from_text(text=text_content))
+                tool_parts: list[types.Part] = []
 
-                    tool_calls: list[dict[str, Any]] = message.get("tool_calls") or []
-                    for tool_call in tool_calls:
-                        func: dict[str, Any] = tool_call.get("function") or {}
-                        func_name: str = str(func.get("name") or "")
-                        func_args_raw: str | dict[str, Any] = (
-                            func.get("arguments") or {}
-                        )
+                if text_content:
+                    tool_parts.append(types.Part.from_text(text=text_content))
 
-                        func_args: dict[str, Any]
-                        if isinstance(func_args_raw, str):
-                            try:
-                                func_args = (
-                                    json.loads(func_args_raw) if func_args_raw else {}
-                                )
-                            except (json.JSONDecodeError, TypeError):
-                                func_args = {}
-                        else:
-                            func_args = func_args_raw
+                tool_calls: list[dict[str, Any]] = message.get("tool_calls") or []
+                for tool_call in tool_calls:
+                    func: dict[str, Any] = tool_call.get("function") or {}
+                    func_name: str = str(func.get("name") or "")
+                    func_args_raw: str | dict[str, Any] = func.get("arguments") or {}
 
-                        tool_parts.append(
-                            types.Part.from_function_call(
-                                name=func_name, args=func_args
+                    func_args: dict[str, Any]
+                    if isinstance(func_args_raw, str):
+                        try:
+                            func_args = (
+                                json.loads(func_args_raw) if func_args_raw else {}
                             )
-                        )
+                        except (json.JSONDecodeError, TypeError):
+                            func_args = {}
+                    else:
+                        func_args = func_args_raw
+
+                    tool_parts.append(
+                        types.Part.from_function_call(name=func_name, args=func_args)
+                    )
 
                 contents.append(types.Content(role="model", parts=tool_parts))
             else:

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

@@ -693,14 +693,14 @@ class OpenAICompletion(BaseLLM):
         if response_model or self.response_format:
             format_model = response_model or self.response_format
             if isinstance(format_model, type) and issubclass(format_model, BaseModel):
-                schema_output = generate_model_description(format_model)
-                json_schema = schema_output.get("json_schema", {})
+                schema = format_model.model_json_schema()
+                schema["additionalProperties"] = False
                 params["text"] = {
                     "format": {
                         "type": "json_schema",
-                        "name": json_schema.get("name", format_model.__name__),
-                        "strict": json_schema.get("strict", True),
-                        "schema": json_schema.get("schema", {}),
+                        "name": format_model.__name__,
+                        "strict": True,
+                        "schema": schema,
                     }
                 }
             elif isinstance(format_model, dict):
@@ -1060,7 +1060,7 @@ class OpenAICompletion(BaseLLM):
                     chunk=delta_text,
                     from_task=from_task,
                     from_agent=from_agent,
-                    response_id=response_id_stream,
+                    response_id=response_id_stream
                 )
 
             elif event.type == "response.function_call_arguments.delta":
@@ -1709,7 +1709,7 @@ class OpenAICompletion(BaseLLM):
                 **parse_params, response_format=response_model
             ) as stream:
                 for chunk in stream:
-                    response_id_stream = chunk.id if hasattr(chunk, "id") else None
+                    response_id_stream=chunk.id if hasattr(chunk,"id") else None
 
                     if chunk.type == "content.delta":
                         delta_content = chunk.delta
@@ -1718,7 +1718,7 @@ class OpenAICompletion(BaseLLM):
                                 chunk=delta_content,
                                 from_task=from_task,
                                 from_agent=from_agent,
-                                response_id=response_id_stream,
+                                response_id=response_id_stream
                             )
 
                 final_completion = stream.get_final_completion()
@@ -1748,9 +1748,7 @@ class OpenAICompletion(BaseLLM):
         usage_data = {"total_tokens": 0}
 
         for completion_chunk in completion_stream:
-            response_id_stream = (
-                completion_chunk.id if hasattr(completion_chunk, "id") else None
-            )
+            response_id_stream=completion_chunk.id if hasattr(completion_chunk,"id") else None
 
             if hasattr(completion_chunk, "usage") and completion_chunk.usage:
                 usage_data = self._extract_openai_token_usage(completion_chunk)
@@ -1768,7 +1766,7 @@ class OpenAICompletion(BaseLLM):
                     chunk=chunk_delta.content,
                     from_task=from_task,
                     from_agent=from_agent,
-                    response_id=response_id_stream,
+                    response_id=response_id_stream
                 )
 
             if chunk_delta.tool_calls:
@@ -1807,7 +1805,7 @@ class OpenAICompletion(BaseLLM):
                             "index": tool_calls[tool_index]["index"],
                         },
                         call_type=LLMCallType.TOOL_CALL,
-                        response_id=response_id_stream,
+                        response_id=response_id_stream
                     )
 
         self._track_token_usage_internal(usage_data)
@@ -2019,7 +2017,7 @@ class OpenAICompletion(BaseLLM):
             accumulated_content = ""
             usage_data = {"total_tokens": 0}
             async for chunk in completion_stream:
-                response_id_stream = chunk.id if hasattr(chunk, "id") else None
+                response_id_stream=chunk.id if hasattr(chunk,"id") else None
 
                 if hasattr(chunk, "usage") and chunk.usage:
                     usage_data = self._extract_openai_token_usage(chunk)
@@ -2037,7 +2035,7 @@ class OpenAICompletion(BaseLLM):
                         chunk=delta.content,
                         from_task=from_task,
                         from_agent=from_agent,
-                        response_id=response_id_stream,
+                        response_id=response_id_stream
                     )
 
             self._track_token_usage_internal(usage_data)
@@ -2073,7 +2071,7 @@ class OpenAICompletion(BaseLLM):
         usage_data = {"total_tokens": 0}
 
         async for chunk in stream:
-            response_id_stream = chunk.id if hasattr(chunk, "id") else None
+            response_id_stream=chunk.id if hasattr(chunk,"id") else None
 
             if hasattr(chunk, "usage") and chunk.usage:
                 usage_data = self._extract_openai_token_usage(chunk)
@@ -2091,7 +2089,7 @@ class OpenAICompletion(BaseLLM):
                     chunk=chunk_delta.content,
                     from_task=from_task,
                     from_agent=from_agent,
-                    response_id=response_id_stream,
+                    response_id=response_id_stream
                 )
 
             if chunk_delta.tool_calls:
@@ -2130,7 +2128,7 @@ class OpenAICompletion(BaseLLM):
                             "index": tool_calls[tool_index]["index"],
                         },
                         call_type=LLMCallType.TOOL_CALL,
-                        response_id=response_id_stream,
+                        response_id=response_id_stream
                     )
 
         self._track_token_usage_internal(usage_data)

lib/crewai/src/crewai/llms/providers/utils/common.py

@@ -2,7 +2,6 @@ import logging
 import re
 from typing import Any
 
-from crewai.utilities.pydantic_schema_utils import generate_model_description
 from crewai.utilities.string_utils import sanitize_tool_name
 
 
@@ -78,8 +77,7 @@ def extract_tool_info(tool: dict[str, Any]) -> tuple[str, str, dict[str, Any]]:
         # Also check for args_schema (Pydantic format)
         if not parameters and "args_schema" in tool:
             if hasattr(tool["args_schema"], "model_json_schema"):
-                schema_output = generate_model_description(tool["args_schema"])
-                parameters = schema_output.get("json_schema", {}).get("schema", {})
+                parameters = tool["args_schema"].model_json_schema()
 
     return name, description, parameters
 

lib/crewai/src/crewai/telemetry/telemetry.py

@@ -173,6 +173,13 @@ class Telemetry:
 
         self._original_handlers: dict[int, Any] = {}
 
+        if threading.current_thread() is not threading.main_thread():
+            logger.debug(
+                "CrewAI telemetry: Skipping signal handler registration "
+                "(not running in main thread)."
+            )
+            return
+
         self._register_signal_handler(signal.SIGTERM, SigTermEvent, shutdown=True)
         self._register_signal_handler(signal.SIGINT, SigIntEvent, shutdown=True)
         if hasattr(signal, "SIGHUP"):

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

@@ -28,7 +28,6 @@ from crewai.utilities.exceptions.context_window_exceeding_exception import (
 )
 from crewai.utilities.i18n import I18N
 from crewai.utilities.printer import ColoredText, Printer
-from crewai.utilities.pydantic_schema_utils import generate_model_description
 from crewai.utilities.string_utils import sanitize_tool_name
 from crewai.utilities.token_counter_callback import TokenCalcHandler
 from crewai.utilities.types import LLMMessage
@@ -37,7 +36,6 @@ from crewai.utilities.types import LLMMessage
 if TYPE_CHECKING:
     from crewai.agent import Agent
     from crewai.agents.crew_agent_executor import CrewAgentExecutor
-    from crewai.experimental.agent_executor import AgentExecutor
     from crewai.lite_agent import LiteAgent
     from crewai.llm import LLM
     from crewai.task import Task
@@ -160,8 +158,7 @@ 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)
-                parameters = schema_output.get("json_schema", {}).get("schema", {})
+                parameters = tool.args_schema.model_json_schema()
                 # Remove title and description from schema root as they're redundant
                 parameters.pop("title", None)
                 parameters.pop("description", None)
@@ -321,7 +318,7 @@ def get_llm_response(
     from_task: Task | None = None,
     from_agent: Agent | LiteAgent | None = None,
     response_model: type[BaseModel] | None = None,
-    executor_context: CrewAgentExecutor | AgentExecutor | LiteAgent | None = None,
+    executor_context: CrewAgentExecutor | LiteAgent | None = None,
 ) -> str | Any:
     """Call the LLM and return the response, handling any invalid responses.
 
@@ -383,7 +380,7 @@ async def aget_llm_response(
     from_task: Task | None = None,
     from_agent: Agent | LiteAgent | None = None,
     response_model: type[BaseModel] | None = None,
-    executor_context: CrewAgentExecutor | AgentExecutor | None = None,
+    executor_context: CrewAgentExecutor | None = None,
 ) -> str | Any:
     """Call the LLM asynchronously and return the response.
 
@@ -903,8 +900,7 @@ def extract_tool_call_info(
 
 
 def _setup_before_llm_call_hooks(
-    executor_context: CrewAgentExecutor | AgentExecutor | LiteAgent | None,
-    printer: Printer,
+    executor_context: CrewAgentExecutor | LiteAgent | None, printer: Printer
 ) -> bool:
     """Setup and invoke before_llm_call hooks for the executor context.
 
@@ -954,7 +950,7 @@ def _setup_before_llm_call_hooks(
 
 
 def _setup_after_llm_call_hooks(
-    executor_context: CrewAgentExecutor | AgentExecutor | LiteAgent | None,
+    executor_context: CrewAgentExecutor | LiteAgent | None,
     answer: str,
     printer: Printer,
 ) -> str:

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

@@ -1,72 +1,14 @@
-"""Dynamic Pydantic model creation from JSON schemas.
-
-This module provides utilities for converting JSON schemas to Pydantic models at runtime.
-The main function is `create_model_from_schema`, which takes a JSON schema and returns
-a dynamically created Pydantic model class.
-
-This is used by the A2A server to honor response schemas sent by clients, allowing
-structured output from agent tasks.
-
-Based on dydantic (https://github.com/zenbase-ai/dydantic).
+"""Utilities for generating JSON schemas from Pydantic models.
 
 This module provides functions for converting Pydantic models to JSON schemas
 suitable for use with LLMs and tool definitions.
 """
 
-from __future__ import annotations
-
 from collections.abc import Callable
 from copy import deepcopy
-import datetime
-import logging
-from typing import TYPE_CHECKING, Annotated, Any, Literal, Union
-import uuid
+from typing import Any
 
-from pydantic import (
-    UUID1,
-    UUID3,
-    UUID4,
-    UUID5,
-    AnyUrl,
-    BaseModel,
-    ConfigDict,
-    DirectoryPath,
-    Field,
-    FilePath,
-    FileUrl,
-    HttpUrl,
-    Json,
-    MongoDsn,
-    NewPath,
-    PostgresDsn,
-    SecretBytes,
-    SecretStr,
-    StrictBytes,
-    create_model as create_model_base,
-)
-from pydantic.networks import (  # type: ignore[attr-defined]
-    IPv4Address,
-    IPv6Address,
-    IPvAnyAddress,
-    IPvAnyInterface,
-    IPvAnyNetwork,
-)
-
-
-logger = logging.getLogger(__name__)
-
-if TYPE_CHECKING:
-    from pydantic import EmailStr
-    from pydantic.main import AnyClassMethod
-else:
-    try:
-        from pydantic import EmailStr
-    except ImportError:
-        logger.warning(
-            "EmailStr unavailable, using str fallback",
-            extra={"missing_package": "email_validator"},
-        )
-        EmailStr = str
+from pydantic import BaseModel
 
 
 def resolve_refs(schema: dict[str, Any]) -> dict[str, Any]:
@@ -301,319 +243,3 @@ def generate_model_description(model: type[BaseModel]) -> dict[str, Any]:
             "schema": json_schema,
         },
     }
-
-
-FORMAT_TYPE_MAP: dict[str, type[Any]] = {
-    "base64": Annotated[bytes, Field(json_schema_extra={"format": "base64"})],  # type: ignore[dict-item]
-    "binary": StrictBytes,
-    "date": datetime.date,
-    "time": datetime.time,
-    "date-time": datetime.datetime,
-    "duration": datetime.timedelta,
-    "directory-path": DirectoryPath,
-    "email": EmailStr,
-    "file-path": FilePath,
-    "ipv4": IPv4Address,
-    "ipv6": IPv6Address,
-    "ipvanyaddress": IPvAnyAddress,  # type: ignore[dict-item]
-    "ipvanyinterface": IPvAnyInterface,  # type: ignore[dict-item]
-    "ipvanynetwork": IPvAnyNetwork,  # type: ignore[dict-item]
-    "json-string": Json,
-    "multi-host-uri": PostgresDsn | MongoDsn,  # type: ignore[dict-item]
-    "password": SecretStr,
-    "path": NewPath,
-    "uri": AnyUrl,
-    "uuid": uuid.UUID,
-    "uuid1": UUID1,
-    "uuid3": UUID3,
-    "uuid4": UUID4,
-    "uuid5": UUID5,
-}
-
-
-def create_model_from_schema(  # type: ignore[no-any-unimported]
-    json_schema: dict[str, Any],
-    *,
-    root_schema: dict[str, Any] | None = None,
-    __config__: ConfigDict | None = None,
-    __base__: type[BaseModel] | None = None,
-    __module__: str = __name__,
-    __validators__: dict[str, AnyClassMethod] | None = None,
-    __cls_kwargs__: dict[str, Any] | None = None,
-) -> type[BaseModel]:
-    """Create a Pydantic model from a JSON schema.
-
-    This function takes a JSON schema as input and dynamically creates a Pydantic
-    model class based on the schema. It supports various JSON schema features such
-    as nested objects, referenced definitions ($ref), arrays with typed items,
-    union types (anyOf/oneOf), and string formats.
-
-    Args:
-        json_schema: A dictionary representing the JSON schema.
-        root_schema: The root schema containing $defs. If not provided, the
-            current schema is treated as the root schema.
-        __config__: Pydantic configuration for the generated model.
-        __base__: Base class for the generated model. Defaults to BaseModel.
-        __module__: Module name for the generated model class.
-        __validators__: A dictionary of custom validators for the generated model.
-        __cls_kwargs__: Additional keyword arguments for the generated model class.
-
-    Returns:
-        A dynamically created Pydantic model class based on the provided JSON schema.
-
-    Example:
-        >>> schema = {
-        ...     "title": "Person",
-        ...     "type": "object",
-        ...     "properties": {
-        ...         "name": {"type": "string"},
-        ...         "age": {"type": "integer"},
-        ...     },
-        ...     "required": ["name"],
-        ... }
-        >>> Person = create_model_from_schema(schema)
-        >>> person = Person(name="John", age=30)
-        >>> person.name
-        'John'
-    """
-    effective_root = root_schema or json_schema
-
-    if "allOf" in json_schema:
-        json_schema = _merge_all_of_schemas(json_schema["allOf"], effective_root)
-        if "title" not in json_schema and "title" in (root_schema or {}):
-            json_schema["title"] = (root_schema or {}).get("title")
-
-    model_name = json_schema.get("title", "DynamicModel")
-    field_definitions = {
-        name: _json_schema_to_pydantic_field(
-            name, prop, json_schema.get("required", []), effective_root
-        )
-        for name, prop in (json_schema.get("properties", {}) or {}).items()
-    }
-
-    return create_model_base(
-        model_name,
-        __config__=__config__,
-        __base__=__base__,
-        __module__=__module__,
-        __validators__=__validators__,
-        __cls_kwargs__=__cls_kwargs__,
-        **field_definitions,
-    )
-
-
-def _json_schema_to_pydantic_field(
-    name: str,
-    json_schema: dict[str, Any],
-    required: list[str],
-    root_schema: dict[str, Any],
-) -> Any:
-    """Convert a JSON schema property to a Pydantic field definition.
-
-    Args:
-        name: The field name.
-        json_schema: The JSON schema for this field.
-        required: List of required field names.
-        root_schema: The root schema for resolving $ref.
-
-    Returns:
-        A tuple of (type, Field) for use with create_model.
-    """
-    type_ = _json_schema_to_pydantic_type(json_schema, root_schema, name_=name.title())
-    description = json_schema.get("description")
-    examples = json_schema.get("examples")
-    is_required = name in required
-
-    field_params: dict[str, Any] = {}
-    schema_extra: dict[str, Any] = {}
-
-    if description:
-        field_params["description"] = description
-    if examples:
-        schema_extra["examples"] = examples
-
-    default = ... if is_required else None
-
-    if isinstance(type_, type) and issubclass(type_, (int, float)):
-        if "minimum" in json_schema:
-            field_params["ge"] = json_schema["minimum"]
-        if "exclusiveMinimum" in json_schema:
-            field_params["gt"] = json_schema["exclusiveMinimum"]
-        if "maximum" in json_schema:
-            field_params["le"] = json_schema["maximum"]
-        if "exclusiveMaximum" in json_schema:
-            field_params["lt"] = json_schema["exclusiveMaximum"]
-        if "multipleOf" in json_schema:
-            field_params["multiple_of"] = json_schema["multipleOf"]
-
-    format_ = json_schema.get("format")
-    if format_ in FORMAT_TYPE_MAP:
-        pydantic_type = FORMAT_TYPE_MAP[format_]
-
-        if format_ == "password":
-            if json_schema.get("writeOnly"):
-                pydantic_type = SecretBytes
-        elif format_ == "uri":
-            allowed_schemes = json_schema.get("scheme")
-            if allowed_schemes:
-                if len(allowed_schemes) == 1 and allowed_schemes[0] == "http":
-                    pydantic_type = HttpUrl
-                elif len(allowed_schemes) == 1 and allowed_schemes[0] == "file":
-                    pydantic_type = FileUrl
-
-        type_ = pydantic_type
-
-    if isinstance(type_, type) and issubclass(type_, str):
-        if "minLength" in json_schema:
-            field_params["min_length"] = json_schema["minLength"]
-        if "maxLength" in json_schema:
-            field_params["max_length"] = json_schema["maxLength"]
-        if "pattern" in json_schema:
-            field_params["pattern"] = json_schema["pattern"]
-
-    if not is_required:
-        type_ = type_ | None
-
-    if schema_extra:
-        field_params["json_schema_extra"] = schema_extra
-
-    return type_, Field(default, **field_params)
-
-
-def _resolve_ref(ref: str, root_schema: dict[str, Any]) -> dict[str, Any]:
-    """Resolve a $ref to its actual schema.
-
-    Args:
-        ref: The $ref string (e.g., "#/$defs/MyType").
-        root_schema: The root schema containing $defs.
-
-    Returns:
-        The resolved schema dict.
-    """
-    from typing import cast
-
-    ref_path = ref.split("/")
-    if ref.startswith("#/$defs/"):
-        ref_schema: dict[str, Any] = root_schema["$defs"]
-        start_idx = 2
-    else:
-        ref_schema = root_schema
-        start_idx = 1
-    for path in ref_path[start_idx:]:
-        ref_schema = cast(dict[str, Any], ref_schema[path])
-    return ref_schema
-
-
-def _merge_all_of_schemas(
-    schemas: list[dict[str, Any]],
-    root_schema: dict[str, Any],
-) -> dict[str, Any]:
-    """Merge multiple allOf schemas into a single schema.
-
-    Combines properties and required fields from all schemas.
-
-    Args:
-        schemas: List of schemas to merge.
-        root_schema: The root schema for resolving $ref.
-
-    Returns:
-        Merged schema with combined properties and required fields.
-    """
-    merged: dict[str, Any] = {"type": "object", "properties": {}, "required": []}
-
-    for schema in schemas:
-        if "$ref" in schema:
-            schema = _resolve_ref(schema["$ref"], root_schema)
-
-        if "properties" in schema:
-            merged["properties"].update(schema["properties"])
-
-        if "required" in schema:
-            for field in schema["required"]:
-                if field not in merged["required"]:
-                    merged["required"].append(field)
-
-        if "title" in schema and "title" not in merged:
-            merged["title"] = schema["title"]
-
-    return merged
-
-
-def _json_schema_to_pydantic_type(
-    json_schema: dict[str, Any],
-    root_schema: dict[str, Any],
-    *,
-    name_: str | None = None,
-) -> Any:
-    """Convert a JSON schema to a Python/Pydantic type.
-
-    Args:
-        json_schema: The JSON schema to convert.
-        root_schema: The root schema for resolving $ref.
-        name_: Optional name for nested models.
-
-    Returns:
-        A Python type corresponding to the JSON schema.
-    """
-    ref = json_schema.get("$ref")
-    if ref:
-        ref_schema = _resolve_ref(ref, root_schema)
-        return _json_schema_to_pydantic_type(ref_schema, root_schema, name_=name_)
-
-    enum_values = json_schema.get("enum")
-    if enum_values:
-        return Literal[tuple(enum_values)]
-
-    if "const" in json_schema:
-        return Literal[json_schema["const"]]
-
-    any_of_schemas = []
-    if "anyOf" in json_schema or "oneOf" in json_schema:
-        any_of_schemas = json_schema.get("anyOf", []) + json_schema.get("oneOf", [])
-    if any_of_schemas:
-        any_of_types = [
-            _json_schema_to_pydantic_type(schema, root_schema)
-            for schema in any_of_schemas
-        ]
-        return Union[tuple(any_of_types)]  # noqa: UP007
-
-    all_of_schemas = json_schema.get("allOf")
-    if all_of_schemas:
-        if len(all_of_schemas) == 1:
-            return _json_schema_to_pydantic_type(
-                all_of_schemas[0], root_schema, name_=name_
-            )
-        merged = _merge_all_of_schemas(all_of_schemas, root_schema)
-        return _json_schema_to_pydantic_type(merged, root_schema, name_=name_)
-
-    type_ = json_schema.get("type")
-
-    if type_ == "string":
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-        return int
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-        return float
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-        return bool
-    if type_ == "array":
-        items_schema = json_schema.get("items")
-        if items_schema:
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-            return list[item_type]  # type: ignore[valid-type]
-        return list
-    if type_ == "object":
-        properties = json_schema.get("properties")
-        if properties:
-            json_schema_ = json_schema.copy()
-            if json_schema_.get("title") is None:
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-    if type_ == "null":
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-    if type_ is None:
-        return Any
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lib/crewai/src/crewai/utilities/types.py

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     tool_calls: NotRequired[list[dict[str, Any]]]
-    raw_tool_call_parts: NotRequired[list[Any]]
     files: NotRequired[dict[str, FileInput]]

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lib/crewai/tests/hooks/test_tool_hooks.py

@@ -590,233 +590,3 @@ class TestToolHooksIntegration:
             # Clean up hooks
             unregister_before_tool_call_hook(before_tool_call_hook)
             unregister_after_tool_call_hook(after_tool_call_hook)
-
-
-class TestNativeToolCallingHooksIntegration:
-    """Integration tests for hooks with native function calling (Agent and Crew)."""
-
-    @pytest.mark.vcr()
-    def test_agent_native_tool_hooks_before_and_after(self):
-        """Test that Agent with native tool calling executes before/after hooks."""
-        import os
-        from crewai import Agent
-        from crewai.tools import tool
-
-        hook_calls = {"before": [], "after": []}
-
-        @tool("multiply_numbers")
-        def multiply_numbers(a: int, b: int) -> int:
-            """Multiply two numbers together."""
-            return a * b
-
-        def before_hook(context: ToolCallHookContext) -> bool | None:
-            hook_calls["before"].append({
-                "tool_name": context.tool_name,
-                "tool_input": dict(context.tool_input),
-                "has_agent": context.agent is not None,
-            })
-            return None
-
-        def after_hook(context: ToolCallHookContext) -> str | None:
-            hook_calls["after"].append({
-                "tool_name": context.tool_name,
-                "tool_result": context.tool_result,
-                "has_agent": context.agent is not None,
-            })
-            return None
-
-        register_before_tool_call_hook(before_hook)
-        register_after_tool_call_hook(after_hook)
-
-        try:
-            agent = Agent(
-                role="Calculator",
-                goal="Perform calculations",
-                backstory="You are a calculator assistant",
-                tools=[multiply_numbers],
-                verbose=True,
-            )
-
-            agent.kickoff(
-                messages="What is 7 times 6? Use the multiply_numbers tool."
-            )
-
-            # Verify before hook was called
-            assert len(hook_calls["before"]) > 0, "Before hook was never called"
-            before_call = hook_calls["before"][0]
-            assert before_call["tool_name"] == "multiply_numbers"
-            assert "a" in before_call["tool_input"]
-            assert "b" in before_call["tool_input"]
-            assert before_call["has_agent"] is True
-
-            # Verify after hook was called
-            assert len(hook_calls["after"]) > 0, "After hook was never called"
-            after_call = hook_calls["after"][0]
-            assert after_call["tool_name"] == "multiply_numbers"
-            assert "42" in str(after_call["tool_result"])
-            assert after_call["has_agent"] is True
-
-        finally:
-            unregister_before_tool_call_hook(before_hook)
-            unregister_after_tool_call_hook(after_hook)
-
-    @pytest.mark.vcr()
-    def test_crew_native_tool_hooks_before_and_after(self):
-        """Test that Crew with Agent executes before/after hooks with full context."""
-        import os
-        from crewai import Agent, Crew, Task
-        from crewai.tools import tool
-
-
-        hook_calls = {"before": [], "after": []}
-
-        @tool("divide_numbers")
-        def divide_numbers(a: int, b: int) -> float:
-            """Divide first number by second number."""
-            return a / b
-
-        def before_hook(context: ToolCallHookContext) -> bool | None:
-            hook_calls["before"].append({
-                "tool_name": context.tool_name,
-                "tool_input": dict(context.tool_input),
-                "has_agent": context.agent is not None,
-                "has_task": context.task is not None,
-                "has_crew": context.crew is not None,
-                "agent_role": context.agent.role if context.agent else None,
-            })
-            return None
-
-        def after_hook(context: ToolCallHookContext) -> str | None:
-            hook_calls["after"].append({
-                "tool_name": context.tool_name,
-                "tool_result": context.tool_result,
-                "has_agent": context.agent is not None,
-                "has_task": context.task is not None,
-                "has_crew": context.crew is not None,
-            })
-            return None
-
-        register_before_tool_call_hook(before_hook)
-        register_after_tool_call_hook(after_hook)
-
-        try:
-            agent = Agent(
-                role="Math Assistant",
-                goal="Perform division calculations accurately",
-                backstory="You are a math assistant that helps with division",
-                tools=[divide_numbers],
-                verbose=True,
-            )
-
-            task = Task(
-                description="Calculate 100 divided by 4 using the divide_numbers tool.",
-                expected_output="The result of the division",
-                agent=agent,
-            )
-
-            crew = Crew(
-                agents=[agent],
-                tasks=[task],
-                verbose=True,
-            )
-
-            crew.kickoff()
-
-            # Verify before hook was called with full context
-            assert len(hook_calls["before"]) > 0, "Before hook was never called"
-            before_call = hook_calls["before"][0]
-            assert before_call["tool_name"] == "divide_numbers"
-            assert "a" in before_call["tool_input"]
-            assert "b" in before_call["tool_input"]
-            assert before_call["has_agent"] is True
-            assert before_call["has_task"] is True
-            assert before_call["has_crew"] is True
-            assert before_call["agent_role"] == "Math Assistant"
-
-            # Verify after hook was called with full context
-            assert len(hook_calls["after"]) > 0, "After hook was never called"
-            after_call = hook_calls["after"][0]
-            assert after_call["tool_name"] == "divide_numbers"
-            assert "25" in str(after_call["tool_result"])
-            assert after_call["has_agent"] is True
-            assert after_call["has_task"] is True
-            assert after_call["has_crew"] is True
-
-        finally:
-            unregister_before_tool_call_hook(before_hook)
-            unregister_after_tool_call_hook(after_hook)
-
-    @pytest.mark.vcr()
-    def test_before_hook_blocks_tool_execution_in_crew(self):
-        """Test that returning False from before hook blocks tool execution."""
-        import os
-        from crewai import Agent, Crew, Task
-        from crewai.tools import tool
-
-        hook_calls = {"before": [], "after": [], "tool_executed": False}
-
-        @tool("dangerous_operation")
-        def dangerous_operation(action: str) -> str:
-            """Perform a dangerous operation that should be blocked."""
-            hook_calls["tool_executed"] = True
-            return f"Executed: {action}"
-
-        def blocking_before_hook(context: ToolCallHookContext) -> bool | None:
-            hook_calls["before"].append({
-                "tool_name": context.tool_name,
-                "tool_input": dict(context.tool_input),
-            })
-            # Block all calls to dangerous_operation
-            if context.tool_name == "dangerous_operation":
-                return False
-            return None
-
-        def after_hook(context: ToolCallHookContext) -> str | None:
-            hook_calls["after"].append({
-                "tool_name": context.tool_name,
-                "tool_result": context.tool_result,
-            })
-            return None
-
-        register_before_tool_call_hook(blocking_before_hook)
-        register_after_tool_call_hook(after_hook)
-
-        try:
-            agent = Agent(
-                role="Test Agent",
-                goal="Try to use the dangerous operation tool",
-                backstory="You are a test agent",
-                tools=[dangerous_operation],
-                verbose=True,
-            )
-
-            task = Task(
-                description="Use the dangerous_operation tool with action 'delete_all'.",
-                expected_output="The result of the operation",
-                agent=agent,
-            )
-
-            crew = Crew(
-                agents=[agent],
-                tasks=[task],
-                verbose=True,
-            )
-
-            crew.kickoff()
-
-            # Verify before hook was called
-            assert len(hook_calls["before"]) > 0, "Before hook was never called"
-            before_call = hook_calls["before"][0]
-            assert before_call["tool_name"] == "dangerous_operation"
-
-            # Verify the actual tool function was NOT executed
-            assert hook_calls["tool_executed"] is False, "Tool should have been blocked"
-
-            # Verify after hook was still called (with blocked message)
-            assert len(hook_calls["after"]) > 0, "After hook was never called"
-            after_call = hook_calls["after"][0]
-            assert "blocked" in after_call["tool_result"].lower()
-
-        finally:
-            unregister_before_tool_call_hook(blocking_before_hook)
-            unregister_after_tool_call_hook(after_hook)

lib/crewai/tests/telemetry/test_telemetry.py

@@ -1,6 +1,6 @@
 import os
 import threading
-from unittest.mock import patch
+from unittest.mock import MagicMock, patch
 
 import pytest
 from crewai import Agent, Crew, Task
@@ -121,3 +121,90 @@ def test_telemetry_singleton_pattern():
         thread.join()
 
     assert all(instance is telemetry1 for instance in instances)
+
+
+def test_signal_handler_registration_skipped_in_non_main_thread():
+    """Test that signal handler registration is skipped when running from a non-main thread.
+
+    This test verifies that when Telemetry is initialized from a non-main thread,
+    the signal handler registration is skipped without raising noisy ValueError tracebacks.
+    See: https://github.com/crewAIInc/crewAI/issues/4289
+    """
+    Telemetry._instance = None
+
+    result = {"register_signal_handler_called": False, "error": None}
+
+    def init_telemetry_in_thread():
+        try:
+            with patch("crewai.telemetry.telemetry.TracerProvider"):
+                with patch.object(
+                    Telemetry,
+                    "_register_signal_handler",
+                    wraps=lambda *args, **kwargs: None,
+                ) as mock_register:
+                    telemetry = Telemetry()
+                    result["register_signal_handler_called"] = mock_register.called
+                    result["telemetry"] = telemetry
+        except Exception as e:
+            result["error"] = e
+
+    thread = threading.Thread(target=init_telemetry_in_thread)
+    thread.start()
+    thread.join()
+
+    assert result["error"] is None, f"Unexpected error: {result['error']}"
+    assert (
+        result["register_signal_handler_called"] is False
+    ), "Signal handler should not be registered in non-main thread"
+
+
+def test_signal_handler_registration_skipped_logs_debug_message():
+    """Test that a debug message is logged when signal handler registration is skipped.
+
+    This test verifies that when Telemetry is initialized from a non-main thread,
+    a debug message is logged indicating that signal handler registration was skipped.
+    """
+    Telemetry._instance = None
+
+    result = {"telemetry": None, "error": None, "debug_calls": []}
+
+    mock_logger_debug = MagicMock()
+
+    def init_telemetry_in_thread():
+        try:
+            with patch("crewai.telemetry.telemetry.TracerProvider"):
+                with patch(
+                    "crewai.telemetry.telemetry.logger.debug", mock_logger_debug
+                ):
+                    result["telemetry"] = Telemetry()
+                    result["debug_calls"] = [
+                        str(call) for call in mock_logger_debug.call_args_list
+                    ]
+        except Exception as e:
+            result["error"] = e
+
+    thread = threading.Thread(target=init_telemetry_in_thread)
+    thread.start()
+    thread.join()
+
+    assert result["error"] is None, f"Unexpected error: {result['error']}"
+    assert result["telemetry"] is not None
+
+    debug_calls = result["debug_calls"]
+    assert any(
+        "Skipping signal handler registration" in call for call in debug_calls
+    ), f"Expected debug message about skipping signal handler registration, got: {debug_calls}"
+
+
+def test_signal_handlers_registered_in_main_thread():
+    """Test that signal handlers are registered when running from the main thread."""
+    Telemetry._instance = None
+
+    with patch("crewai.telemetry.telemetry.TracerProvider"):
+        with patch(
+            "crewai.telemetry.telemetry.Telemetry._register_signal_handler"
+        ) as mock_register:
+            telemetry = Telemetry()
+
+            assert telemetry.ready is True
+            assert mock_register.call_count >= 2

lib/devtools/src/crewai_devtools/__init__.py

@@ -1,3 +1,3 @@
 """CrewAI development tools."""
 
-__version__ = "1.9.1"
+__version__ = "1.9.0"