Savecraft MCP Server Provides Claude with Accurate Magic: The Gathering Data

Savecraft is an open-source MCP server that solves Claude's tendency to hallucinate Magic: The Gathering card names and rules by providing structured access to real game data. The tool parses your MTG Arena Player.log locally, syncs your game state, and gives Claude access to 12 expert reference modules built on actual Magic data.

What Savecraft Provides

The server gives Claude access to:

• Your actual Arena data: collection, decks, match history, draft logs, play-by-play replays, rank
• Draft advisor: 8-axis pick evaluation calibrated across 31 color archetypes from 17Lands data (millions of games)
• Play advisor: post-game review from per-turn replay data covering card timing, mana efficiency, and attack analysis
• Match stats: personal win rates by deck, format, and opponent archetype, plus sideboard effectiveness
• Card search: full Scryfall database, preventing Claude from inventing cards
• Rules engine: complete MTG Comprehensive Rules plus per-card rulings
• Mana base calculator: Frank Karsten's hypergeometric source math
• Collection diff: wildcard cost to complete any decklist from what you actually own
• Deckbuilding: composition analysis, format legality, curve visualization for limited and constructed formats

Practical Implementation

In practice, Claude can pull live draft pick recommendations scored across 8 axes from 17Lands data and provide full draft reviews grading every pick against what the data says was optimal. The screenshots show Claude analyzing draft picks with data-backed recommendations.

Savecraft also supports Diablo II: Resurrected (.d2s binary parsing), Stardew Valley, Clair Obscur, and RimWorld, with more games planned. The project is free and open source under Apache 2.0 license.

The GitHub repository is available at: https://github.com/joshsymonds/savecraft.gg