Exposes a JSON-RPC endpoint for retrieving simplified weather data from OpenWeatherMap.
This tool serves as a minimal demo for an MCP-style JSON-RPC endpoint, specifically designed to provide weather information. It connects to the OpenWeatherMap API, retrieves raw weather data, and then returns a simplified result via its `getWeather(city)` capability. Ideal for educational purposes, it showcases basic server-side TypeScript development and external API integration, while also providing a clear example of implementing a JSON-RPC service.