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MCP with Express

Run a Model Context Protocol (MCP) server on Vercel with Express.

MCP

Express MCP Server on Vercel

Model Context Protocol (MCP) server built with Express.js that provides weather data tools.

Clone and run locally

git clone https://github.com/vercel-labs/express-mcp
pnpm i
pnpm dev

Features

This MCP server provides weather-related tools:

  • get-alerts: Get weather alerts for a US state (requires 2-letter state code)
  • get-forecast: Get weather forecast for a location (requires latitude/longitude)

Testing

You can connect to the server using MCP Inspector or any other MCP client. Be sure to include the /mcp path in the connection URL (e.g., https://your-deployment.vercel.app/mcp).

API Endpoints

  • POST /mcp: Handles incoming messages for the MCP protocol
Use Cases
Stack