This! So many native/web apps have APIs which are only consumed by that app and are over architected chasing "REST". Just make an endpoint for the data you're fetching and move on!

There are so many apps that go from function to rest to function.

App.Something(5) > /api/something/5 > API.Something(5)

It's OK to just need an RPC web API! Especially really verby ones where you waste time trying to turn everything into a "resource".