is API call in page code secure?

Hi
Xano noob here.
I'm doing a GET request in Webflow to my Xano DB as per one of Prakash's great video tutes.
I'm not using any Xano Auth as users can only access the page in question if they login via my Memberstack integration with Webflow.

Do I need any other security on the API calls/endpoints that are in my page source code with the above setup?
Cheers
~James