[jdauriemma]

I could be mistaken, but I believe more recent versions of Rails have out-of-the-box tools for creating and maintaining JSON APIs. Many of the bootcamp grads I work with seem to have had experience building JSON APIs using a vanilla rails app.

[bdcravens]

It has included jbuilder for a long time, which has a DSL for rendering JSON responses.

https://github.com/rails/jbuilder

For a few years now, it has included the ability to focus strictly on APIs, leaving out the pieces you'd need for a full-blown browser-rendered app.

https://guides.rubyonrails.org/api_app.html