MVC architecture in RESTFUL API

It’s hard to answer your question because you mix different concept names that aren’t necessarily related. MVC stands for Model-View-Controller which is a way to structure code of an app, for instance in a mobile app. In that context, Model classes are classes related to the “real-life” objects related to the very subject of your app.

However, it doesn’t necessarily relate to REST APIs apart perhaps if your model classes are the expected “resources” to be queried in a RESTful manner…