What it does
The MCP reference test server: one server that exercises the whole protocol surface — tools, prompts, resources, resource links, structured content, progress notifications, logging, sampling, elicitation, and roots. Built for developers implementing or debugging an MCP client rather than for end-user work; if a client handles this server correctly it handles the protocol. Runs locally over stdio.
Example prompts
- Call the echo tool and show me exactly what comes back.
- Run the long-running operation tool so I can watch progress notifications arrive.
