diff --git a/src/composio_client/resources/tools.py b/src/composio_client/resources/tools.py
index 71c688aa..1b0d3844 100644
--- a/src/composio_client/resources/tools.py
+++ b/src/composio_client/resources/tools.py
@@ -383,8 +383,10 @@ def proxy(
 
           body: The request body (for POST, PUT, and PATCH requests)
 
-          connected_account_id: The ID of the connected account to use for authentication (if not provided, will
-              use the default account for the project)
+          connected_account_id: The ID of the connected account to use for authentication. Required
+              unless ``custom_connection_data`` is provided. The proxy endpoint
+              returns 400 ``ExternalProxy_MissingAuthContext`` when both are
+              omitted.
 
           parameters: Additional HTTP headers or query parameters to include in the request
 
@@ -788,8 +790,10 @@ async def proxy(
 
           body: The request body (for POST, PUT, and PATCH requests)
 
-          connected_account_id: The ID of the connected account to use for authentication (if not provided, will
-              use the default account for the project)
+          connected_account_id: The ID of the connected account to use for authentication. Required
+              unless ``custom_connection_data`` is provided. The proxy endpoint
+              returns 400 ``ExternalProxy_MissingAuthContext`` when both are
+              omitted.
 
           parameters: Additional HTTP headers or query parameters to include in the request