ERR_NGROK_18013: The metadata field cannot be longer than 4096 characters

What does ERR_NGROK_18013 mean?

ngrok returns ERR_NGROK_18013 with this message:

The metadata field cannot be longer than 4096 characters.

Troubleshoot ERR_NGROK_18013 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.