MCP Weather Server

MCP Weather Demo - README ========================= Overview -------- This demo implements a minimal MCP-style JSON-RPC endpoint exposing a `getWeather(city)` capability. The server calls OpenWeatherMap (OWM) API and returns a simplified result. Setup ----- 1. Install Node.js (>=16). 2. Copy this folder to your machine. 3. Create a free OpenWeatherMap API key: https://openweathermap.org/api 4. Set environment variable: - Unix/macOS: export OWM_KEY=your_key_here - Windows (PowerShell): $env:OWM_KEY='your_key_here' Install & Run ------------- npm install # development (no build) npx ts-node src/server.ts # or build & run npm run build npm start Test ---- Use the provided client: npx ts-node src/client.ts Or use curl: curl -X POST http://localhost:3000/json-rpc -H 'Content-Type: application/json' -d '{ "jsonrpc":"2.0", "method":"getWeather", "params": {"city":"London"}, "id":1 }' Notes ----- - This is a minimal example for demo/educational purposes. - Add caching, rate-limiting, better error handling, and authentication for production.