A reference implementation showing how to build MCP servers in .NET using the ModelContextProtocol SDK. Ships with working examples including weather lookups via wttr.in (get_weather_by_zip_code, get_weather_forecast), random number generation, and simple greeting tools. Demonstrates the full lifecycle from implementing tools in C# to packaging as a NuGet package that can run via dnx. Useful if you're building MCP servers in .NET and want to see how tool registration, stdio transport configuration, and NuGet publishing work in practice. The weather tools make good starting points for API integration patterns.