Notifications from Marketpress about creation of users, products, orders, etc.

We are setting up a site that uses marketpress
to manage a etsy-like network.

We have a backend database that is used to store products, orders, users, etc. The backend database is exposed using REST API.

Is there any documentation that describes marketpress code, so that I can invoke REST API (from marketpress) and populate our database? Things of interest include:

- Creation and deletion of users
- Creation and deletion of products
- Order creation

and others..