diff --git a/wwwroot/api/rl_callback.dspy b/wwwroot/api/rl_callback.dspy
index 3cd7134..ca66202 100644
--- a/wwwroot/api/rl_callback.dspy
+++ b/wwwroot/api/rl_callback.dspy
@@ -1,8 +1,7 @@
-import json
-
 # Vendor callback POSTs JSON body with BytedToken.
 # The callback URL is configured when calling CreateVisualValidateSession.
 # Typical payload: {"BytedToken": "...", "ReqUUID": "...", "Status": "..."}
+# Return format depends on vendor requirements.
 
 body_str = http_request.get("body", "") or ""
 byted_token = ""
@@ -21,12 +20,8 @@ if not byted_token:
     byted_token = params_kw.get("BytedToken", params_kw.get("byted_token", ""))
 
 if not byted_token:
-    return json.dumps({"status": "error", "data": {"message": "缺少 BytedToken 参数"}}, ensure_ascii=False)
+    return {"success": False, "message": "缺少 BytedToken 参数"}
 
 # vendor is determined by looking up the session record
 result = await rl_handle_callback(byted_token, project_name="default")
-
-if result.get('success'):
-    return json.dumps({"status": "ok", "data": {"vendor_group_id": result.get('vendor_group_id', '')}}, ensure_ascii=False)
-else:
-    return json.dumps({"status": "error", "data": {"message": result.get('message', '回调处理失败')}}, ensure_ascii=False)
+return result