Accessing RTC wich is backed by DevOPS
One answer
If you ask about Dev Ops Services/JazzHub then you can get a URI for your project and you can access it with the Eclipse client. This means you can also use the API against it. You have limited permissions however.
Comments
Is there the place to find out about what is possible using this API and documentation to it itself?
Start here: https://rsjazz.wordpress.com/2015/09/30/learning-to-fly-getting-started-with-the-rtc-java-apis/
More hints here: https://rsjazz.wordpress.com/interesting-links/
The Plain Java Client libraries have a JavaDoc as mentioned in the links in the first post