MCP Server

MCP server for your MCP app.

Quick Start

npm install
npm run dev

Server runs at http://localhost:3001/mcp by default.

To change the port:

PORT=3003 npm run dev

If the port is already in use, the server will fall back to the next available port and print the actual URL.

Test with MCP Inspector

npm run inspect

npm run inspect will use PORT if set, otherwise it will try to read .mcp-port (written by the dev server).

Deploy

Vercel

vercel deploy

Manual

1. Build: npm run build
2. Start: npm start

Tools

• example_tool: An example tool for your MCP app

Adding New Tools

1. Create a new handler in src/tools/
2. Register it in src/index.ts
3. Update your widget to call the tool

Security

CORS Configuration

By default, this server allows requests from any origin (Access-Control-Allow-Origin: *).

For production, restrict CORS to your widget's domain by setting the CORS_ORIGIN environment variable:

CORS_ORIGIN=https://your-widget-domain.com