A simple demonstration server that counts how many times the letter 'r' appears in a text string. It's minimal by design, offering a single counting tool that processes your input and returns the count. You'd reach for this as a learning example when building your first MCP server or testing client implementations, not for production use. The straightforward implementation makes it useful for understanding the MCP protocol's request and response flow without the complexity of real integrations. Install via pip and add it to your MCP client config to start experimenting with the counting functionality.