Customer Management System (CMS) API provides the ability to manage customer data like contact information, logins, and accounts. CMS API also allows you to work with orders (inspect, fill, cancel, etc.).
The user interface is based on Google's protocol buffers (proto2). For general information on how Google protocol buffers work, visit https://developers.google.com/protocol-buffers/.
CMS API uses secure WebSockets technology.
More information can be found here:
CMS API can be accessed by applications written in any language that has corresponding libraries (Python, C#, Java, C++, etc.).