I may have misunderstood what you're saying, but binding your endpoints to your entities isn't a bad idea at all. For example, even when you're not making an SP

I may have misunderstood what you're saying, but binding your endpoints to your entities isn't a bad idea at all. For example, even when you're not making an SPA and are using good ol' server-side generated Rails, you would still have a 1:1 mapping of pages to resources, and your "app" would move you from page to page as you did stuff. This works out pretty well because your resources are what people want to interact with! Try out Basecamp sometime - watch the routes, they're all well bound to resources, yet it feels very much like an app. The progenitors of Rails are still doing things the old way and they're pretty good at it.