Wechat Devtools MCP

Wechat Devtools MCP

Enables AI assistants to control WeChat mini-programs running in WeChat Developer Tools through MCP tools. Provides automation capabilities for launching, navigating, querying, and interacting with pages and elements.

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README

@purea/wechat-devtools-mcp

基于微信官方 miniprogram-automator SDK 封装的 MCP 服务器, 将微信小程序自动化能力暴露为 MCP 工具,供 AI 助手通过 stdio 调用,控制微信开发者工具中运行的小程序。

使用前提

  1. 微信开发者工具开启「设置 -> 安全设置 -> 服务端口」(CLI/HTTP 调用)
  2. 小程序已编译(uni-app 项目请先执行 uni buildprojectPath 指向 unpackage/dist/build/mp-weixin;原生小程序指向含 project.config.json 的目录)

MCP 客户端配置示例

已发布至 npmjs,直接通过 npx 拉起:

{
  "mcpServers": {
    "Wechat Devtools Mcp": {
      "command": "npx",
      "args": ["-y", "@purea/wechat-devtools-mcp@latest"],
      "env": {},
      "disabled": false
    }
  }
}

可通过 args 追加默认参数,作为 launch / connect 工具参数的默认值(工具参数传入时优先):

参数 说明
--projectPath= 小程序项目路径(缺省自动探测当前工作区)
--cliPath= 微信开发者工具 CLI 路径(缺省自动探测默认安装位置)
--timeout= 启动最长等待时间(ms),默认 30000
--port= 自动化 WebSocket 端口
--account= 用户 openid(多账号调试)
--ticket= 开发者工具登录票据
--trust-project 自动信任项目
{
  "mcpServers": {
    "Wechat Devtools Mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@purea/wechat-devtools-mcp@latest",
        "--projectPath=E:/MyProgram/demo/unpackage/dist/build/mp-weixin",
        "--cliPath=C:/Program Files (x86)/Tencent/微信web开发者工具/cli.bat",
        "--trust-project"
      ],
      "env": {},
      "disabled": false
    }
  }
}

提供的能力

  • 连接 / 生命周期:launch / connect / status / disconnect / close / release_handles
  • 小程序级操作:page_stack / navigate_to / redirect_to / navigate_back / re_launch / switch_tab / current_page / system_info / evaluate / page_scroll_to / screenshot / 票据(get_ticket / set_ticket / refresh_ticket)/ wx 方法(call_wx_method / mock_wx_method / restore_wx_method
  • 页面级操作:page_query / page_query_all / page_query_xpath / page_query_xpath_all / page_call_method / page_wait_for / page_data / page_set_data / page_size / page_scroll_top
  • 元素级操作:element_query / element_tap / element_input / element_text / element_trigger 等 25 个
  • 运行日志:console_messages / exception_messages / clear_event_logs

说明

  • 句柄数量有上限(页面 500 / 元素 1000),超出后按 FIFO 淘汰最旧句柄;也可随时用 release_handles 手动清理。
  • status 在连接失效时返回 connected: false 并附带原因,而不是直接报错。

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