User blog comment:Darkman 4/Lean, mod tools and developers console confirmed for the PC version of Black Ops!/@comment-789991-20100819183451

Guthix, the things made in mod tools can only be used by a server owner. If you log in with, say, an AK with a 999 round mag and 100 damage per bullet, the game will, at best, ignore it, or at worst, kick you for altering key files.