WeChat Developer Tools MCP Server

中文

This is a Model Context Protocol (MCP) server that connects to WeChat Developer Tools via miniprogram-automator. It allows you to control the IDE and the mini-program from an MCP client (like Claude Desktop or an AI agent).

Prerequisites

1. Node.js: Version 18+ is recommended (though it may work on older versions with some polyfills, this project is set up for modern Node).
2. WeChat Developer Tools: Must be installed and running.
3. Enable Automation: In WeChat Developer Tools, go to Settings -> Security Settings and enable Service Port (CLI/HTTP invocation).

Quick Start

Using with Claude Desktop (Recommended)

Add the following to your claude_desktop_config.json (e.g., ~/Library/Application Support/Claude/claude_desktop_config.json on macOS):

{
  "mcpServers": {
    "wechat-devtools": {
      "command": "npx",
      "args": [
        "-y",
        "wechat-dev-mcp"
      ]
    }
  }
}

Manual Installation

To install globally:

npm install -g wechat-dev-mcp

Then configure:

{
  "mcpServers": {
    "wechat-devtools": {
      "command": "wechat-dev-mcp",
      "args": []
    }
  }
}

Local Development

1. Clone the repository
2. Install dependencies:

   npm install

3. Build and run locally:

   node index.js

4. Configure Claude Desktop to point to your local file:

   {
     "mcpServers": {
       "wechat-devtools": {
         "command": "node",
         "args": ["/absolute/path/to/wechat-dev-mcp/index.js"]
       }
     }
   }

Available Tools

• launch: Launch and connect to a mini-program project.
  • projectPath: Absolute path to the project.
  • cliPath: (Optional) Path to the DevTools CLI.
• connect: Connect to an already running DevTools instance.
  • wsEndpoint: WebSocket endpoint (e.g., ws://localhost:9420).
• navigate_to: Navigate to a page (e.g., /pages/index/index).
• get_page_data: Get data from the current page.
• set_page_data: Set data on the current page.
• get_element: Get text, attributes, wxml of an element or tap it.
• call_method: Call a method on the current page instance.
• disconnect: Disconnect automation.

Troubleshooting

• Connection Refused: Ensure WeChat Developer Tools is running and the Service Port is enabled in Settings.
• Path Issues: Use absolute paths for projectPath.