Weather MCP Server

A Model Context Protocol (MCP) server that provides weather data from the National Weather Service API. Built following the MCP TypeScript server guide.

Tools

get_alerts

Get active weather alerts for a US state.

Parameter	Type	Description
state	string	Two-letter state code (e.g. CA, NY)

get_forecast

Get the weather forecast for a location by coordinates.

Parameter	Type	Description
latitude	number	Latitude (-90 to 90)
longitude	number	Longitude (-180 to 180)

Note: Only US locations are supported by the NWS API.

Setup

npm install
npm run build

Usage with Claude Desktop

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json):

{
  "mcpServers": {
    "weather": {
      "command": "node",
      "args": ["/absolute/path/to/weather/build/index.js"]
    }
  }
}

Usage with Claude Code

Add to your Claude Code settings:

claude mcp add weather node /absolute/path/to/weather/build/index.js

Development

npm install
npm run build
npm start

License

MIT