Comment by emilos

It's a restful api that doesn't hold any state, we use jwt (jsonwebtoken) for auth. It's essentially a collection of routers for different actions. Mostly crud, with few exceptions like webhooks, auth flow. We often use middlewares e.g. for things like validation. Everything is written in ts/tsx so the client/server do share types. We serialize data to use it in a standarized/known format in the UI.