We’re just interacting with the SSRS Web Service. I’m using PowerShell, but you could also write a little .NET app to do something similar.
I’m not using any magical SSRS-specific cmdlets. I’m using PowerShell to interact with a web service….that web service just happens to be SSRS.
If you’re still trying to get along with RSScripter (if you can even find a copy any longer), Andy’s code might help you out.