MCP server could not connect
Trying to get the Signalk MCP server connected in between SignalK instance and Claude desktop.
Used the following set-up in ;claude_desktop_config.json
"signalk": {
"command": "npx",
"args": ["-y", "signalk-mcp-server"],
"env": {
"SIGNALK_HOST": "http://192.168.xx.xx",
"SIGNALK_PORT": "3000",
"SIGNALK_TLS": "false"
}
}
Getting the following error log info:
2026-01-06T20:33:00.600Z [signalk] [info] Server started and connected successfully { metadata: undefined }
2026-01-06T20:33:01.024Z [signalk] [info] Message from client: {"method":"initialize","params":{"protocolVersion":"2025-06-18","capabilities":{},"clientInfo":{"name":"claude-ai","version":"0.1.0"}},"jsonrpc":"2.0","id":0} { metadata: undefined }
2026-01-06T20:33:09.093Z [signalk] [info] Server transport closed { metadata: undefined }
2026-01-06T20:33:09.094Z [signalk] [info] Client transport closed { metadata: undefined }
2026-01-06T20:33:09.095Z [signalk] [info] Server transport closed unexpectedly, this is likely due to the process exiting early. If you are developing this MCP server you can add output to stderr (i.e.
2026-01-06T20:33:09.095Z [signalk] [error] Server disconnected. For troubleshooting guidance, please visit our debugging documentation { metadata: { context: 'connection', stack: undefined } }
2026-01-06T20:33:09.095Z [signalk] [info] Client transport closed { metadata: undefined }
2026-01-06T20:33:20.940Z [signalk] [info] Client transport closed { metadata: undefined }
2026-01-06T20:33:20.940Z [signalk] [info] Shutting down server... { metadata: undefined }
2026-01-06T20:33:20.941Z [signalk] [info] Initializing server... { metadata: undefined }
'm i doing something wrong ? Thx G.
Used the following set-up in ;claude_desktop_config.json
"signalk": {
"command": "npx",
"args": ["-y", "signalk-mcp-server"],
"env": {
"SIGNALK_HOST": "http://192.168.xx.xx",
"SIGNALK_PORT": "3000",
"SIGNALK_TLS": "false"
}
}
Getting the following error log info:
2026-01-06T20:33:00.600Z [signalk] [info] Server started and connected successfully { metadata: undefined }
2026-01-06T20:33:01.024Z [signalk] [info] Message from client: {"method":"initialize","params":{"protocolVersion":"2025-06-18","capabilities":{},"clientInfo":{"name":"claude-ai","version":"0.1.0"}},"jsonrpc":"2.0","id":0} { metadata: undefined }
2026-01-06T20:33:09.093Z [signalk] [info] Server transport closed { metadata: undefined }
2026-01-06T20:33:09.094Z [signalk] [info] Client transport closed { metadata: undefined }
2026-01-06T20:33:09.095Z [signalk] [info] Server transport closed unexpectedly, this is likely due to the process exiting early. If you are developing this MCP server you can add output to stderr (i.e.
console.error('...')print('...', file=sys.stderr)2026-01-06T20:33:09.095Z [signalk] [error] Server disconnected. For troubleshooting guidance, please visit our debugging documentation { metadata: { context: 'connection', stack: undefined } }
2026-01-06T20:33:09.095Z [signalk] [info] Client transport closed { metadata: undefined }
2026-01-06T20:33:20.940Z [signalk] [info] Client transport closed { metadata: undefined }
2026-01-06T20:33:20.940Z [signalk] [info] Shutting down server... { metadata: undefined }
2026-01-06T20:33:20.941Z [signalk] [info] Initializing server... { metadata: undefined }
'm i doing something wrong ? Thx G.
