Metamod
From CKRAS Wiki
Metamod:Source is a C++ plugin environment for Half-Life 2. It acts as a "metamod" which sits in between the Game and the Engine, and allows plugins to intercept calls that flow between. It provides a mechanism called SourceHook, a very powerful library for intercepting, overridding, and superseding virtual function calls.
METAMOD for CS2 can be conveniently installed in the webinterface'
Metamod is required for our COACH mode, see -> CKRAS BOT
more about MM you can find on the official page