ERR_NGROK_9014: Your legacy account is not authorized to run the agent with proxy proto - ngrok documentation

What does ERR_NGROK_9014 mean?

ngrok returns ERR_NGROK_9014 with this message:

Your legacy account is not authorized to run the agent with proxy proto.

Upgrade to a new Pay-as-you-go plan at: https://dashboard.ngrok.com/billing/choose-a-plan?plan=paygo

Troubleshoot ERR_NGROK_9014 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_9014?

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