open‑rpc/mock‑server is a command‑line tool (and importable JS/TS library) that automatically creates a mock JSON‑RPC server from any OpenRPC document. It can run in a simple “basic” mode that returns example results or schema‑generated data and validates inputs, or in “service” mode where a single server can host multiple mocked APIs via a `mock` method, making it useful for developers who need quick, standards‑compliant mock endpoints for testing and integration of JSON‑RPC services.