diff --git a/src/crewai_tools/tools/ai_mind_tool/ai_mind_tool.py b/src/crewai_tools/tools/ai_mind_tool/ai_mind_tool.py
index 1a96f62ff..ea6b19281 100644
--- a/src/crewai_tools/tools/ai_mind_tool/ai_mind_tool.py
+++ b/src/crewai_tools/tools/ai_mind_tool/ai_mind_tool.py
@@ -2,7 +2,7 @@ import os
 import secrets
 from typing import Any, Dict, List, Optional, Type
 
-from crewai.tools import BaseTool
+from crewai.tools import BaseTool, EnvVar
 from openai import OpenAI
 from pydantic import BaseModel, Field
 
@@ -33,6 +33,9 @@ class AIMindTool(BaseTool):
     datasources: Optional[List[Dict[str, Any]]] = None
     mind_name: Optional[str] = None
     package_dependencies: List[str] = ["minds-sdk"]
+    env_vars: List[EnvVar] = [
+        EnvVar(name="MINDS_API_KEY", description="API key for AI-Minds", required=True),
+    ]
 
     def __init__(self, api_key: Optional[str] = None, **kwargs):
         super().__init__(**kwargs)
@@ -85,4 +88,4 @@ class AIMindTool(BaseTool):
             stream=False,
         )
 
-        return completion.choices[0].message.content
\ No newline at end of file
+        return completion.choices[0].message.content
diff --git a/src/crewai_tools/tools/linkup/linkup_search_tool.py b/src/crewai_tools/tools/linkup/linkup_search_tool.py
index c35c7fac3..634ba2863 100644
--- a/src/crewai_tools/tools/linkup/linkup_search_tool.py
+++ b/src/crewai_tools/tools/linkup/linkup_search_tool.py
@@ -1,6 +1,7 @@
+import os
 from typing import Any, List
 
-from crewai.tools import BaseTool
+from crewai.tools import BaseTool, EnvVar
 
 try:
     from linkup import LinkupClient
@@ -24,8 +25,11 @@ class LinkupSearchTool(BaseTool):
     )
     _client: LinkupClient = PrivateAttr()  # type: ignore
     package_dependencies: List[str] = ["linkup-sdk"]
+    env_vars: List[EnvVar] = [
+        EnvVar(name="LINKUP_API_KEY", description="API key for Linkup", required=True),
+    ]
 
-    def __init__(self, api_key: str):
+    def __init__(self, api_key: str | None = None):
         """
         Initialize the tool with an API key.
         """
@@ -48,7 +52,7 @@ class LinkupSearchTool(BaseTool):
                     "The 'linkup-sdk' package is required to use the LinkupSearchTool. "
                     "Please install it with: uv add linkup-sdk"
                 )
-        self._client = LinkupClient(api_key=api_key)
+        self._client = LinkupClient(api_key=api_key or os.getenv("LINKUP_API_KEY"))
 
     def _run(
         self, query: str, depth: str = "standard", output_type: str = "searchResults"
diff --git a/src/crewai_tools/tools/multion_tool/multion_tool.py b/src/crewai_tools/tools/multion_tool/multion_tool.py
index 3c8d17819..cf652c324 100644
--- a/src/crewai_tools/tools/multion_tool/multion_tool.py
+++ b/src/crewai_tools/tools/multion_tool/multion_tool.py
@@ -1,8 +1,9 @@
 """Multion tool spec."""
 
+import os
 from typing import Any, Optional, List
 
-from crewai.tools import BaseTool
+from crewai.tools import BaseTool, EnvVar
 
 
 class MultiOnTool(BaseTool):
@@ -17,6 +18,9 @@ class MultiOnTool(BaseTool):
     local: bool = False
     max_steps: int = 3
     package_dependencies: List[str] = ["multion"]
+    env_vars: List[EnvVar] = [
+        EnvVar(name="MULTION_API_KEY", description="API key for Multion", required=True),
+    ]
 
     def __init__(
         self,
@@ -44,7 +48,7 @@ class MultiOnTool(BaseTool):
                 )
         self.session_id = None
         self.local = local
-        self.multion = MultiOn(api_key=api_key)
+        self.multion = MultiOn(api_key=api_key or os.getenv("MULTION_API_KEY"))
         self.max_steps = max_steps
 
     def _run(
diff --git a/src/crewai_tools/tools/oxylabs_amazon_product_scraper_tool/oxylabs_amazon_product_scraper_tool.py b/src/crewai_tools/tools/oxylabs_amazon_product_scraper_tool/oxylabs_amazon_product_scraper_tool.py
index d763fa86f..1d4146fcb 100644
--- a/src/crewai_tools/tools/oxylabs_amazon_product_scraper_tool/oxylabs_amazon_product_scraper_tool.py
+++ b/src/crewai_tools/tools/oxylabs_amazon_product_scraper_tool/oxylabs_amazon_product_scraper_tool.py
@@ -4,7 +4,7 @@ from importlib.metadata import version
 from platform import architecture, python_version
 from typing import Any, List, Type
 
-from crewai.tools import BaseTool
+from crewai.tools import BaseTool, EnvVar
 from pydantic import BaseModel, ConfigDict, Field
 
 try:
@@ -73,6 +73,10 @@ class OxylabsAmazonProductScraperTool(BaseTool):
     oxylabs_api: RealtimeClient
     config: OxylabsAmazonProductScraperConfig
     package_dependencies: List[str] = ["oxylabs"]
+    env_vars: List[EnvVar] = [
+        EnvVar(name="OXYLABS_USERNAME", description="Username for Oxylabs", required=True),
+        EnvVar(name="OXYLABS_PASSWORD", description="Password for Oxylabs", required=True),
+    ]
 
     def __init__(
         self,
diff --git a/src/crewai_tools/tools/oxylabs_amazon_search_scraper_tool/oxylabs_amazon_search_scraper_tool.py b/src/crewai_tools/tools/oxylabs_amazon_search_scraper_tool/oxylabs_amazon_search_scraper_tool.py
index 9a113e93a..e659d244f 100644
--- a/src/crewai_tools/tools/oxylabs_amazon_search_scraper_tool/oxylabs_amazon_search_scraper_tool.py
+++ b/src/crewai_tools/tools/oxylabs_amazon_search_scraper_tool/oxylabs_amazon_search_scraper_tool.py
@@ -4,7 +4,7 @@ from importlib.metadata import version
 from platform import architecture, python_version
 from typing import Any, List, Type
 
-from crewai.tools import BaseTool
+from crewai.tools import BaseTool, EnvVar
 from pydantic import BaseModel, ConfigDict, Field
 
 try:
@@ -75,6 +75,10 @@ class OxylabsAmazonSearchScraperTool(BaseTool):
     oxylabs_api: RealtimeClient
     config: OxylabsAmazonSearchScraperConfig
     package_dependencies: List[str] = ["oxylabs"]
+    env_vars: List[EnvVar] = [
+        EnvVar(name="OXYLABS_USERNAME", description="Username for Oxylabs", required=True),
+        EnvVar(name="OXYLABS_PASSWORD", description="Password for Oxylabs", required=True),
+    ]
 
     def __init__(
         self,
diff --git a/src/crewai_tools/tools/oxylabs_google_search_scraper_tool/oxylabs_google_search_scraper_tool.py b/src/crewai_tools/tools/oxylabs_google_search_scraper_tool/oxylabs_google_search_scraper_tool.py
index 7de1aaa2d..1096df098 100644
--- a/src/crewai_tools/tools/oxylabs_google_search_scraper_tool/oxylabs_google_search_scraper_tool.py
+++ b/src/crewai_tools/tools/oxylabs_google_search_scraper_tool/oxylabs_google_search_scraper_tool.py
@@ -4,7 +4,7 @@ from importlib.metadata import version
 from platform import architecture, python_version
 from typing import Any, List, Type
 
-from crewai.tools import BaseTool
+from crewai.tools import BaseTool, EnvVar
 from pydantic import BaseModel, ConfigDict, Field
 
 try:
@@ -78,6 +78,10 @@ class OxylabsGoogleSearchScraperTool(BaseTool):
     oxylabs_api: RealtimeClient
     config: OxylabsGoogleSearchScraperConfig
     package_dependencies: List[str] = ["oxylabs"]
+    env_vars: List[EnvVar] = [
+        EnvVar(name="OXYLABS_USERNAME", description="Username for Oxylabs", required=True),
+        EnvVar(name="OXYLABS_PASSWORD", description="Password for Oxylabs", required=True),
+    ]
 
     def __init__(
         self,
diff --git a/src/crewai_tools/tools/oxylabs_universal_scraper_tool/oxylabs_universal_scraper_tool.py b/src/crewai_tools/tools/oxylabs_universal_scraper_tool/oxylabs_universal_scraper_tool.py
index 22d02f91f..05b174500 100644
--- a/src/crewai_tools/tools/oxylabs_universal_scraper_tool/oxylabs_universal_scraper_tool.py
+++ b/src/crewai_tools/tools/oxylabs_universal_scraper_tool/oxylabs_universal_scraper_tool.py
@@ -4,7 +4,7 @@ from importlib.metadata import version
 from platform import architecture, python_version
 from typing import Any, List, Type
 
-from crewai.tools import BaseTool
+from crewai.tools import BaseTool, EnvVar
 from pydantic import BaseModel, ConfigDict, Field
 
 try:
@@ -69,6 +69,10 @@ class OxylabsUniversalScraperTool(BaseTool):
     oxylabs_api: RealtimeClient
     config: OxylabsUniversalScraperConfig
     package_dependencies: List[str] = ["oxylabs"]
+    env_vars: List[EnvVar] = [
+        EnvVar(name="OXYLABS_USERNAME", description="Username for Oxylabs", required=True),
+        EnvVar(name="OXYLABS_PASSWORD", description="Password for Oxylabs", required=True),
+    ]
 
     def __init__(
         self,
diff --git a/src/crewai_tools/tools/scrapfly_scrape_website_tool/scrapfly_scrape_website_tool.py b/src/crewai_tools/tools/scrapfly_scrape_website_tool/scrapfly_scrape_website_tool.py
index 60fc75e16..38bdab2a0 100644
--- a/src/crewai_tools/tools/scrapfly_scrape_website_tool/scrapfly_scrape_website_tool.py
+++ b/src/crewai_tools/tools/scrapfly_scrape_website_tool/scrapfly_scrape_website_tool.py
@@ -1,7 +1,8 @@
+import os
 import logging
 from typing import Any, Dict, Literal, Optional, Type, List
 
-from crewai.tools import BaseTool
+from crewai.tools import BaseTool, EnvVar
 from pydantic import BaseModel, Field
 
 logger = logging.getLogger(__file__)
@@ -29,6 +30,9 @@ class ScrapflyScrapeWebsiteTool(BaseTool):
     api_key: str = None
     scrapfly: Optional[Any] = None
     package_dependencies: List[str] = ["scrapfly-sdk"]
+    env_vars: List[EnvVar] = [
+        EnvVar(name="SCRAPFLY_API_KEY", description="API key for Scrapfly", required=True),
+    ]
 
     def __init__(self, api_key: str):
         super().__init__()
@@ -47,7 +51,7 @@ class ScrapflyScrapeWebsiteTool(BaseTool):
                 raise ImportError(
                     "`scrapfly-sdk` package not found, please run `uv add scrapfly-sdk`"
                 )
-        self.scrapfly = ScrapflyClient(key=api_key)
+        self.scrapfly = ScrapflyClient(key=api_key or os.getenv("SCRAPFLY_API_KEY"))
 
     def _run(
         self,
diff --git a/src/crewai_tools/tools/spider_tool/spider_tool.py b/src/crewai_tools/tools/spider_tool/spider_tool.py
index 853833261..3aee6ef88 100644
--- a/src/crewai_tools/tools/spider_tool/spider_tool.py
+++ b/src/crewai_tools/tools/spider_tool/spider_tool.py
@@ -2,7 +2,7 @@ import logging
 from typing import Any, Dict, Literal, Optional, Type, List
 from urllib.parse import unquote, urlparse
 
-from crewai.tools import BaseTool
+from crewai.tools import BaseTool, EnvVar
 from pydantic import BaseModel, Field
 
 logger = logging.getLogger(__file__)
@@ -54,6 +54,9 @@ class SpiderTool(BaseTool):
     log_failures: bool = True
     config: SpiderToolConfig = SpiderToolConfig()
     package_dependencies: List[str] = ["spider-client"]
+    env_vars: List[EnvVar] = [
+        EnvVar(name="SPIDER_API_KEY", description="API key for Spider.cloud", required=True),
+    ]
 
     def __init__(
         self,