diff --git a/apps/chat.js b/apps/chat.js
index 89adb0d..e8f5015 100644
--- a/apps/chat.js
+++ b/apps/chat.js
@@ -1964,8 +1964,6 @@ export class chatgpt extends plugin {
           new KickOutTool(),
           new WeatherTool(),
           new SendPictureTool(),
-
-          new ImageCaptionTool(),
           serpTool
         ]
         let img = []
@@ -1989,7 +1987,8 @@ export class chatgpt extends plugin {
         if (e.img) {
           img.push(...e.img)
         }
-        if (img.length > 0) {
+        if (img.length > 0 && Config.extraUrl) {
+          tools.push(new ImageCaptionTool())
           prompt += `\nthe url of the picture(s) above: ${img.join(', ')}`
         } else {
           tools.push(new SerpImageTool())
diff --git a/guoba.support.js b/guoba.support.js
index 719e914..9a76c7e 100644
--- a/guoba.support.js
+++ b/guoba.support.js
@@ -813,6 +813,12 @@ export function supportGuoba () {
             ]
           }
         },
+        {
+          field: 'extraUrl',
+          label: '额外工具url',
+          bottomHelpMessage: '（测试期间提供一个公益接口，一段时间后撤掉）参考搭建：https://github.com/ikechan8370/chatgpt-plugin-extras',
+          component: 'Input'
+        }
       ],
       // 获取配置数据方法（用于前端填充显示数据）
       getConfigData () {
diff --git a/utils/config.js b/utils/config.js
index 92044fa..d50e42e 100644
--- a/utils/config.js
+++ b/utils/config.js
@@ -128,7 +128,7 @@ const defaultConfig = {
   amapKey: '',
   azSerpKey: '',
   serpSource: 'ikechan8370',
-  extraUrl: '',
+  extraUrl: 'https://cpe.ikechan8370.com',
   version: 'v2.7.0'
 }
 const _path = process.cwd()