Is there a command line or scripting interface for KDE Baloo's file tagging?

KDE's Baloo allows to tag files by adding an extended file system attribute on the file system level (where supported), while keeping a separate index of all the tagged files. Searching within Dolphin is possible with "tags:/MyTag".

Is there a similar way to search for tagged files on the command line or in scripts, maybe with the baloosearch command line utility or via a DBUS interface?