MetaWeblog API

What is the MetaWeblog API?

The MetaWeblog API (MWA) is a programming interface that allows external programs to get and set the text and attributes of weblog posts. It builds on the popular XML-RPC communication protocol, with implementations available in many popular programming environments.

Source: XML-RPC.Com

The methods YikeSite supports are documented with parameters, return values, errors, and examples in the links on the sidebar.