Building a new API on Teradata REST Services

Hi,  I've read with interest the Teradata REST Services guide, and the Driverless Connectivity article at Teradata Magazine : http://www.teradatamagazine.com/v15n01/Tech2Tech/Driverless-Connectivity/
The Guide talks about Teradata REST Services as a "container", and REST API for Teradata Database as the first service deployed in this container.    So how does one go about creating their own REST API ?  The Guide doesn't mention the creation of new services.  So I'm wondering if this is a mechanism for Teradata to deploy additional Teradata supplied APIs, or is the intention for customers to add their own to the "container" ? If the latter is true, are there any guidelines ?
Thanks