Thanks for the quick replies.
I'm not too familiar with where all the documentation is located. The is_user_bot doesn't show up in the scripting reference.
EDIT: hm when I'm trying to compile it says is_user_bot is an undefined symbol. I'm trying to distinguished TF2 bots from real players btw.
EDIT2: Oh wait wth am I doing in the AMX forum, this is a Sourcemod issue x.x. Sorry guys!