The operations of the WSO2 Governance Registry can now be accessed through Web Service calls using the Web Service API (WS-API).
The WS-API supports almost all operations exposed through the main Registry API. A WS client is provided for the WS-API which allows you to access the Registry just as you would through the main Registry API.
See also:
See more information about the Web Services API in the article written by the Tharindu Mathew.
See WS-API Sample as an example.