mcp-pin: mcp-echo-server https://mcp-pin.gautamkhosla.com/servers/2a4f26fd41677a6d.htmlTool definition changesmcp-echo-server tools changed https://mcp-pin.gautamkhosla.com/servers/2a4f26fd41677a6d.html27ec545312e4269afc284c8a2cec09d298bbf4074a8fbeacc40c784b94a83b13 Thu, 03 Sep 2026 06:53:28 GMT echo