This. As long as you keep the API relatively simple, something like basic CRUD "restful", it is really low cost to transform your domain model modules (regularl

This. As long as you keep the API relatively simple, something like basic CRUD "restful", it is really low cost to transform your domain model modules (regularly called "Context" in the community) into whatever JSON you need. It is just two different presentation of the same data, so you do the work on the data model and the way to access it in elixir, then you just thinly wrap it in the API for it.