diff --git a/src/agents/common/toolkits/registry.py b/src/agents/common/toolkits/registry.py
index ee0eee6f..9cfe8a5b 100644
--- a/src/agents/common/toolkits/registry.py
+++ b/src/agents/common/toolkits/registry.py
@@ -43,7 +43,7 @@ def tool(
     name_or_callable: str | Callable | None = None,
     description: str | None = None,
     args_schema: type | None = None,
-    return_direct: bool = True,
+    return_direct: bool = False,
 ):
     """基于 langchain.tool 的拓展装饰器，同时注册元数据