ERR_NGROK_200: The ngrok API requires that you set the Authorization header for authentication - ngrok documentation

What does ERR_NGROK_200 mean?

ngrok returns ERR_NGROK_200 with this message:

The ngrok API requires that you set the Authorization header for authentication. Your API keys and instructions are available on your dashboard: https://dashboard.ngrok.com/api-keys

Troubleshoot ERR_NGROK_200 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_200?

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