UPDATE
We just released an option to make server-side requests when using the REST API plugin.
By default, being a frontend builder, WeWeb will make client-side API calls. But because many REST APIs only accept server-side calls, we built a feature that allows our users to make server-side calls if they need to.
When a user enables that option, WeWeb will make the request via a dedicated server, without saving or looking at the data going through this server.
Another solution is for users to contact the API admin to allow the “weweb.io”, “weweb-preview.io”, and the domain of their published project to make client-side requests so that client-side requests from the WeWeb Editor, Preview, and Published project go through.