This connects Claude to the actual Slay the Spire 2 game through a bridge mod and local HTTP API. You get a full CLI for reading normalized game state and sending commands for combat, map navigation, card rewards, shops, and events. The setup requires installing both a Python CLI and compiling a .NET 9 mod that runs inside the game process, then keeping the game running while Claude plays. It's genuinely stateful, reading live game data rather than simulating anything. If you want to build an AI agent that learns roguelike deckbuilding by playing thousands of real runs, this is the infrastructure. The decision state system is clean and the command coverage looks comprehensive.
npx skills add https://github.com/hkuds/cli-anything --skill cli-anything-slay-the-spire-ii