Are all tables accessible via the REST API?

Are all tables accessible via the REST API?

No, the REST API is still being built out, and we are adding capabilities to it weekly. It already does some things that the existing XML-RPC API does not support (such as resthooks), but there are some object types that we do not currently have available yet.

Perfect, thanks! Does the existing XML API give access to all tables?

To most of them, via the DataService methods.