ERR_NGROK_6706: The agent ingress domain "DOMAIN" already exists, choose another domain - ngrok documentation

What does ERR_NGROK_6706 mean?

ngrok returns ERR_NGROK_6706 with this message:

The agent ingress domain "<DOMAIN>" already exists, choose another domain.

Troubleshoot ERR_NGROK_6706 with your AI agent. Connect it to the ngrok MCP server, then ask what caused the error and how to fix it.

Where can I get more help with ERR_NGROK_6706?

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