> ## Documentation Index
> Fetch the complete documentation index at: https://ngrok.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Error 3809

## ERR\_NGROK\_3809

AI Gateway action can only be used on HTTP endpoints. This endpoint is using `PROTO`. See [https://ngrok.com/docs/ai-gateway/guides/creating-endpoints](https://ngrok.com/docs/ai-gateway/guides/creating-endpoints) for help creating an endpoint.

## Further help

If you're having trouble resolving this error, please reach out to [support@ngrok.com](mailto:support@ngrok.com?subject=Help%20with%20ERR_NGROK_3809)