ERR_NGROK_15013: Your account is requesting a dev domain that does not exist

What does ERR_NGROK_15013 mean?

ngrok returns ERR_NGROK_15013 with this message:

Your account is requesting a dev domain that does not exist. Visit https://dashboard.ngrok.com/domains to request a dev domain.

Troubleshoot ERR_NGROK_15013 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.