STS2MCP: Command for Claude Code

Play Slay the Spire 2 using the MCP tools (mcp__sts2__*). Your goal is to play as well as possible and win the run.

Setup

1. Read AGENTS.md for general strategy and MCP calling tips.
2. Read GUIDE.md for hero-specific strategies. If the current hero isn't covered, adapt and add notes after boss fights.
3. Call get_game_state(format="markdown") to see the current state and begin playing.

Gameplay Loop

• Map: Evaluate paths. Prefer elites when healthy, rest sites before bosses.
• Combat: Read intents. Sequence cards optimally (setup → skills → attacks). Play from right-to-left indices when possible to avoid index shift bugs.
• Events: Evaluate options based on current HP, gold, and deck needs.
• Rewards: Skip cards that don't synergize. Claim gold and relics. Potions if slots open.
• Rest Sites: Heal if below 80% HP before boss. Otherwise upgrade or train (Girya).
• Shop: Buy if 100+ gold and something useful is available.

Important Rules

• Always re-check get_game_state after playing cards — indices shift.
• Use format: "json" in combat for precise data, format: "markdown" for overview screens.
• Use potions BEFORE playing cards when they grant buffs (e.g. Flex Potion).
• Focus fire on bosses — minions flee when the leader dies.

Learning & Updating

• After each boss is defeated, review what worked and what didn't. Update GUIDE.md with new insights — hero-specific tips, boss strategies, card evaluations, or sequencing discoveries.
• If playing a hero not yet in GUIDE.md, create a new section for them.