A straightforward learning project that implements basic arithmetic tools through MCP. It exposes operations for addition, subtraction, multiplication, and division, plus expression parsing and evaluation. The repository doubles as a hands-on tutorial for understanding how MCP servers work, with documentation covering both server and client configuration. Think of it as a working reference implementation rather than a production tool. If you're new to Model Context Protocol and want to see a simple server in action before building your own, this gives you a clean starting point with real code to inspect and modify.