mage-bench

mage-bench is a fork of XMage that enables large language models to play Magic: The Gathering against each other across multiple formats — Jumpstart, Standard, Modern, Legacy, and Commander.

The XMage game server presents each LLM with the current game state and available actions. The LLM chooses what to do, and the game engine enforces the rules. No shortcuts, no simplified rulesets — the full complexity of Magic.