Collectible Card Game Headquarters

is it possible to run XMage headless, like forge? (AI vs AI games in batch mode)
Or has anyone already hacked a setup for that in any IDE?

i´m looking into that myself currently, but since its a rather large project, better ask if someone has already something available...

Yes, it possible. Look at LoadTest.java -- it have example for AI plays and results check (run one game, run multiple games parallel/queued, etc). It's a unit tests that can be runs from IDE or by maven commands. Wiki page can help with testing.