ERR_NGROK_7132: The hostport HOSTPORT is already in use by an agent directly

What does ERR_NGROK_7132 mean?

ngrok returns ERR_NGROK_7132 with this message:

The hostport `<HOSTPORT>` is already in use by an agent directly.

Troubleshoot ERR_NGROK_7132 with your AI agent. Connect it to the ngrok MCP server, then ask what caused the error and how to fix it.

Email support@ngrok.com and include the error code.