From c780d4be149a65e68e7ae0d3b662fdd89bf4079a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=B0=A2=E4=BF=8A=E7=94=B7?= <xiejunnan@redbearai.com>
Date: Tue, 13 Jan 2026 17:41:03 +0800
Subject: [PATCH] feat(workflow tool node): add a string type output variable

---
 api/app/core/workflow/nodes/tool/node.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/api/app/core/workflow/nodes/tool/node.py b/api/app/core/workflow/nodes/tool/node.py
index 6084dbe3..883df01a 100644
--- a/api/app/core/workflow/nodes/tool/node.py
+++ b/api/app/core/workflow/nodes/tool/node.py
@@ -1,3 +1,4 @@
+import json
 import logging
 import re
 import uuid
@@ -70,14 +71,15 @@ class ToolNode(BaseNode):
         if result.success:
             logger.info(f"节点 {self.node_id} 工具执行成功")
             return {
-                "success": True,
+                "text": json.dumps(result.data, ensure_ascii=False),
                 "data": result.data,
+                "error_code": "",
                 "execution_time": result.execution_time
             }
         else:
             logger.error(f"节点 {self.node_id} 工具执行失败: {result.error}")
             return {
-                "success": False,
+                "text": json.dumps(result.error, ensure_ascii=False),
                 "data": result.error,
                 "error_code": result.error_code,
                 "execution_time": result.execution_time