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Mythic Index

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MTG card prices, deck analysis, and investment intelligence — 19 tools over the Mythic Index API.

Source code Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

PYPI package mythic-index-mcp
Claude Code 
claude mcp add mythic-index -e 'MYTHIC_INDEX_API_KEY=<your mythic_index_api_key>' -e 'MYTHIC_INDEX_API_URL=<MYTHIC_INDEX_API_URL>' -- uvx mythic-index-mcp==0.1.2
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "mythic-index": {
            "command": "uvx",
            "args": [
                "mythic-index-mcp==0.1.2"
            ],
            "env": {
                "MYTHIC_INDEX_API_KEY": "<your mythic_index_api_key>",
                "MYTHIC_INDEX_API_URL": "<MYTHIC_INDEX_API_URL>"
            }
        }
    }
}

Environment variables

  • MYTHIC_INDEX_API_KEY secret API key for the Mythic Index API. Defaults to the bundled public read-only key.
  • MYTHIC_INDEX_API_URL Base URL of the Mythic Index API. Defaults to https://api.mythic-index.com.

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Mythic Index MCP Server
  2. What You Can Do
  3. Quick Start
  4. Available Tools (21)
  5. Data Coverage
  6. Using as a Claude Project
  7. Self-Hosting
  8. API
  9. License
  10. Links

Mythic Index MCP Server

Magic: The Gathering card prices, deck analysis, and investment intelligence — powered by live data from 5 vendors covering 99K+ cards.

Connect this MCP server to Claude Desktop, Claude Code, or any MCP-compatible AI assistant to get real-time MTG card pricing, deck cost analysis, sealed product EV calculations, and investment insights.

What You Can Do

Ask about prices:

"What's the current price of Sheoldred, the Apocalypse?"

Build decks on a budget:

"Find me black creatures with deathtouch under $5 legal in Modern"

Price a full decklist:

"Price this deck: 4 Lightning Bolt, 4 Goblin Guide, 20 Mountain — check Modern legality"

Evaluate sealed products:

"Is the Modern Horizons 3 Collector Booster Box worth buying at $280?"

Track investments:

"What cards spiked this week? Show me Reserved List cards under $50"

Understand strategy:

"What role does Counterspell play? Find me blue counter spells for Commander under $3"

Quick Start

Prerequisites
  • Python 3.10+ (the MCP SDK requires 3.10 or newer)
  • Claude Desktop, Claude Code, or any MCP-compatible client
Install

The published package runs with no manual install via uv:

uvx mythic-index-mcp

Or install from source:

git clone https://github.com/wizkid17/mythic-index-mcp.git
cd mythic-index-mcp
pip install -r requirements.txt
Configure Claude Desktop

Edit your Claude Desktop config file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "mythic-index": {
      "command": "uvx",
      "args": ["mythic-index-mcp"]
    }
  }
}

Restart Claude Desktop. The Mythic Index tools will appear in the tools menu (hammer icon).

Configure Claude Code
claude mcp add mythic-index uvx mythic-index-mcp
Use Your Own API Key (optional)

The server includes a public read-only key with rate limiting. For higher rate limits, get your own key and set it as an environment variable:

{
  "mcpServers": {
    "mythic-index": {
      "command": "uvx",
      "args": ["mythic-index-mcp"],
      "env": {
        "MYTHIC_INDEX_API_KEY": "mi_your_key_here"
      }
    }
  }
}

Available Tools (21)

Search & Discovery
ToolDescription
search_cardsFuzzy name search — handles typos and partial names
find_cardsAdvanced filters: oracle text, color, type, CMC, price, format, Reserved List
browse_cardsBrowse by price, name, or newest sets
list_setsList and search all 971 MTG sets
Pricing
ToolDescription
get_card_priceCurrent prices across TCGPlayer, Card Kingdom, CardMarket, CardSphere, CardHoarder
get_price_historyPrice trends over 7/30/90/365 days
Sets & Sealed Products
ToolDescription
get_set_statsRarity distribution, avg price, total value, chase card, top 10
search_sealedFind booster boxes, packs, bundles, commander decks
get_sealed_evFull EV breakdown with tier analysis (bulk → jackpot)
Investment
ToolDescription
top_moversBiggest price gains and drops over any period
find_arbitrageCross-vendor profit opportunities (buy retail, sell buylist)
reserved_list_trackerBrowse Reserved List cards — never reprinted
Deck Analysis
ToolDescription
price_deckFull decklist pricing: total cost, vendor comparison, mana curve, legality, budget swaps
suggest_budget_alternativesFind cheaper cards with similar type and CMC
analyze_mana_curveCurve visualization, land count evaluation, color source requirements
Strategy
ToolDescription
check_legalityFormat legality: Standard, Modern, Pioneer, Commander, Legacy, Vintage, Pauper
evaluate_cardStrategic roles, keyword abilities, archetype fit
find_cards_by_roleSearch by role: removal, ramp, card draw, burn, counter, tutor, and 7 more
Rules
ToolDescription
search_rulesFull-text search the official Comprehensive Rules + glossary
get_ruleGet a rule by number with its sub-rules (e.g. 509.1)
System
ToolDescription
get_api_statusPlatform health and sync status

Data Coverage

MetricValue
Cards99,000+
Sets971
Price sourcesTCGPlayer, Card Kingdom, CardMarket, CardSphere, CardHoarder
Price listings534,000+
Sealed products3,900+ with EV calculations
Cards with format legality99,287
Reserved List cards1,096
Update frequencyDaily at 3 AM Lima (UTC-5)

Using as a Claude Project

For the best experience, create a Claude Project and add the contents of skill/system_prompt.md as the Project Instructions. This gives Claude deep MTG domain knowledge on top of the live data tools.

Self-Hosting

If you run your own Mythic Index API instance:

export MYTHIC_INDEX_API_URL=http://localhost:8000
export MYTHIC_INDEX_API_KEY=your-key
python3 mcp_server.py

For remote SSE hosting:

python3 mcp_server.py --sse --port 8080

API

This MCP server connects to the Mythic Index API. Documentation: api.mythic-index.com/mtg-api/docs

License

MIT — see LICENSE

Frequently asked questions

What is Mythic Index?

MTG card prices, deck analysis, and investment intelligence — 19 tools over the Mythic Index API.

How do I install Mythic Index?

It runs on your machine. In Claude Code: claude mcp add mythic-index -e 'MYTHIC_INDEX_API_KEY=<your mythic_index_api_key>' -e 'MYTHIC_INDEX_API_URL=<MYTHIC_INDEX_API_URL>' -- uvx mythic-index-mcp==0.1.2. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Mythic Index need an API key?

Yes. It expects MYTHIC_INDEX_API_KEY, which you set in its configuration.

Is Mythic Index open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Mythic Index?

It is published by wizkid17. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.