Weather MCP server for Claude

A minimal remote MCP server using the official TypeScript/JavaScript MCP SDK and Open-Meteo (no API key required). It exposes:

• get_weather: current conditions and a 1–7 day forecast by place name

• POST /mcp: the Streamable HTTP MCP endpoint

• GET /health: a Render health check

Run locally

Requires Node.js 20 or newer.

corepack enable
pnpm install
pnpm start

The MCP endpoint is http://localhost:3000/mcp.

Related MCP server: Weather MCP Server

Deploy on Render

1. Put this directory in a GitHub or GitLab repository.

2. In Render, choose New > Blueprint and connect the repository.

3. Render reads render.yaml and creates the web service.

4. When deployment finishes, use https://YOUR-SERVICE.onrender.com/mcp as the MCP URL.

No weather API key is needed. The free Render plan may sleep when idle, so the first request after inactivity can take longer.

Connect Claude

For Claude clients that support remote custom connectors, add a custom connector whose URL is:

https://YOUR-SERVICE.onrender.com/mcp

The server is intentionally unauthenticated for simplicity. Anyone who knows the URL can call it; add authentication before using private or paid data sources.

Example prompt

Use get_weather to tell me the three-day forecast for Richmond, Virginia in imperial units.

Data source

Weather and geocoding data are supplied by Open-Meteo. Review its attribution and commercial-use terms before using this server in a production product.