Python: Filter framework kwargs from MCP tool invocations

python/packages/core/agent_framework/_tools.py

@@ -1409,10 +1409,18 @@ async def _auto_invoke_function(
     parsed_args: dict[str, Any] = dict(function_call_content.parse_arguments() or {})
 
     # Filter out internal framework kwargs before passing to tools.
+    # This includes middleware infrastructure, chat options, tool configuration, and other
+    # framework-specific parameters that should not be forwarded to external tools.
+    framework_kwargs_to_filter = {
+        "_function_middleware_pipeline",
+        "middleware",
+        "chat_options",
+        "tools",
+        "tool_choice",
+        "thread",
+    }
     runtime_kwargs: dict[str, Any] = {
-        key: value
-        for key, value in (custom_args or {}).items()
-        if key not in {"_function_middleware_pipeline", "middleware"}
+        key: value for key, value in (custom_args or {}).items() if key not in framework_kwargs_to_filter
     }
     try:
         args = tool.input_model.model_validate(parsed_args)

python/samples/getting_started/agents/openai/openai_chat_client_with_local_mcp.py

@@ -16,6 +16,10 @@
 metadata through the _meta field of CallToolResult objects.
 """
 
+import logging
+
+logging.basicConfig(level=logging.DEBUG)
+
 
 async def mcp_tools_on_run_level() -> None:
     """Example showing MCP tools defined when running the agent."""