Python: fix(core): filter out internal args when passing kwargs to MCP tools

python/packages/core/agent_framework/_mcp.py

@@ -727,8 +727,11 @@ async def call_tool(self, tool_name: str, **kwargs: Any) -> list[Contents] | Any
         # Filter out framework kwargs that cannot be serialized by the MCP SDK.
         # These are internal objects passed through the function invocation pipeline
         # that should not be forwarded to external MCP servers.
+        # conversation_id is an internal tracking ID used by services like Azure AI.
         filtered_kwargs = {
-            k: v for k, v in kwargs.items() if k not in {"chat_options", "tools", "tool_choice", "thread"}
+            k: v
+            for k, v in kwargs.items()
+            if k not in {"chat_options", "tools", "tool_choice", "thread", "conversation_id"}
         }
 
         # Try the operation, reconnecting once if the connection is closed

python/packages/core/agent_framework/_tools.py

@@ -1555,10 +1555,11 @@ 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.
+    # conversation_id is an internal tracking ID that should not be forwarded to tools.
     runtime_kwargs: dict[str, Any] = {
         key: value
         for key, value in (custom_args or {}).items()
-        if key not in {"_function_middleware_pipeline", "middleware"}
+        if key not in {"_function_middleware_pipeline", "middleware", "conversation_id"}
     }
     try:
         args = tool.input_model.model_validate(parsed_args)