diff --git a/backend/python/app/agents/tools/wrapper.py b/backend/python/app/agents/tools/wrapper.py
index 3f7ba0fcf9..742934c8a8 100644
--- a/backend/python/app/agents/tools/wrapper.py
+++ b/backend/python/app/agents/tools/wrapper.py
@@ -272,7 +272,9 @@ def _is_class_method(func: Callable) -> bool:
         Returns:
             True if function is a class method
         """
-        return hasattr(func, '__qualname__') and '.' in func.__qualname__
+        # This optimization avoids computing __qualname__ twice for each call.
+        qualname = getattr(func, '__qualname__', None)
+        return qualname is not None and '.' in qualname
 
     def _execute_class_method(
         self,