MCP Server fails to start

[britannio]

Logs from Claude Desktop

2025-03-08T11:55:48.290Z [convex] [info] Initializing server...
2025-03-08T11:55:48.300Z [convex] [info] Server started and connected successfully
2025-03-08T11:55:48.300Z [convex] [info] Message from client: {"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"claude-ai","version":"0.1.0"}},"jsonrpc":"2.0","id":0}
sh: convex: command not found
2025-03-08T11:55:49.052Z [convex] [info] Server transport closed
2025-03-08T11:55:49.052Z [convex] [info] Client transport closed
2025-03-08T11:55:49.052Z [convex] [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('...')` in JavaScript, `print('...', file=sys.stderr)` in python) and it will appear in this log.
2025-03-08T11:55:49.052Z [convex] [error] Server disconnected. For troubleshooting guidance, please visit our [debugging documentation](https://modelcontextprotocol.io/docs/tools/debugging) {"context":"connection"}
2025-03-08T11:55:49.053Z [convex] [info] Client transport closed

I fixed it by running npm install -g convex but this wasn't obvious until I found the logs.

[wzlee]

same error...

[thomasballinger]

Hm thanks, how do you have the MCP server configured? I think you want npx convex mcp start instead of convex mcp start