mtg-oracle

npm version npm downloads License: MIT Node.js MCP gregario/mtg-oracle MCP server

Magic: The Gathering MCP server. Card search, rules lookup, deck analysis, and Commander intelligence.

Provides 14 tools for AI assistants to answer questions about Magic cards, game rules, combos, synergies, and format meta via the Model Context Protocol.

Not just another Scryfall wrapper. mtg-oracle downloads card data, comprehensive rules, and combo databases locally into SQLite for fast offline queries, and ships with curated MTG knowledge (archetypes, format primers, commander strategies, mana base guidelines) that makes LLMs genuinely competent at Magic.

Installation

npm install -g mtg-oracle

Or run directly with npx:

npx mtg-oracle

Claude Desktop Configuration

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json on macOS):

{
  "mcpServers": {
    "mtg-oracle": {
      "command": "npx",
      "args": ["-y", "mtg-oracle"]
    }
  }
}

Or if installed globally:

{
  "mcpServers": {
    "mtg-oracle": {
      "command": "mtg-oracle"
    }
  }
}

Claude Code Configuration

claude mcp add mtg-oracle -- npx -y mtg-oracle

Data

On first run, mtg-oracle downloads card data from Scryfall and rules data from Academy Ruins. Data is stored in ~/.mtg-oracle/ and updated automatically on subsequent runs. No card data is bundled in the npm package.

Tools

Card Tools

Tool	Description
search_cards	Search cards by name, type, color, mana cost, rarity, set, format, or keyword. Full-text search across names, type lines, and oracle text.
get_card	Get complete details for a specific card: oracle text, mana cost, type, P/T, rulings, and legality. Fuzzy name matching.
get_rulings	Get official Wizards of the Coast rulings for a card (interactions, edge cases, clarifications).
check_legality	Check format legality for one or more cards (up to 50). Covers Commander, Modern, Standard, Legacy, Vintage, and more.
search_by_mechanic	Find cards with a specific keyword or mechanic (Flying, Trample, Cascade, etc.). Optionally includes the keyword's rules definition.
get_prices	Look up current market prices for one or more cards (up to 50). Returns USD, USD Foil, EUR, and MTGO tix prices from Scryfall.

Deck Tools

Tool	Description
analyze_deck	Analyze a deck list (plain text or MTGO XML). Returns mana curve, color distribution, type breakdown, mana base analysis, and format legality check.

Rules Tools

Tool	Description
lookup_rule	Look up Comprehensive Rules by section number (e.g., "702.1") or search by text. Returns rule text with subsections and parent context.
get_glossary	Look up game terminology in the official glossary ("permanent", "spell", "stack", "priority", etc.).
get_keyword	Get the official rules definition for keyword abilities (Flying, Deathtouch, Equip, etc.).

Commander Tools

Tool	Description
analyze_commander	Analyze a legendary creature as a Commander: strategies, archetypes, recommended card categories for deckbuilding.
find_combos	Find known infinite combos from Commander Spellbook. Search by card name(s) or color identity. Returns steps, prerequisites, and results.
find_synergies	Find synergy categories (tokens, sacrifice, counters, etc.) and sample cards that work well with a specific card.
get_format_staples	Get staple cards and popular archetypes for any format. Optionally filter by archetype.

Development

# Install dependencies
npm install

# Run tests
npm test

# Build
npm run build

# Run locally
npm start

Attribution

• Card data provided by Scryfall. This project is not produced by or endorsed by Scryfall.
• Combo data from Commander Spellbook.
• Rules data from Academy Ruins.

Legal

This is unofficial Fan Content permitted under the Fan Content Policy. Not approved/endorsed by Wizards of the Coast. Portions of the materials used are property of Wizards of the Coast. All rights reserved.

License

MIT