Shark cheats in Minecraft using a reality-breaking command to alter the game. The manipulation reveals the limits of control ...

Do !duel [username] [pumpkins] I designed this insane gold farm, and now we are going to build it in my Hardcore world!

As stated in the mod's description, the agents "aren't following predefined scripts" either. Instead, they're "operating off natural language instructions", which allows you to basically talk to them ...