I've been hunting the web lately to find some docs of the nepomuk kioslaves. So far, I found nothing useful. I even dug through the KDE SVN repo but couldn't find what I was looking for.
So far I know of
nepomuksearch: hasTag foo (or something similar). But that's about it.
On the other hand: Is there a way to list all files that are known (not necessarily indexed) by nepomuk?