diff --git a/backend/utils/tools.py b/backend/utils/tools.py
index 5846ed4bd..c1c41ed37 100644
--- a/backend/utils/tools.py
+++ b/backend/utils/tools.py
@@ -67,6 +67,7 @@ def get_tools_specs(tools) -> List[dict]:
                             function
                         ).parameters.items()
                         if param.default is param.empty
+                        and not (name.startswith("__") and name.endswith("__"))
                     ],
                 },
             }