Mythic Index

io.github.wizkid17Published by GitHub account wizkid17v0.1.2Updated Oct 24, 2026

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

VerifiedSTDIODesktop onlyFinance Data & Analytics

Server details

Identifier: io.github.wizkid17/mythic-index-mcp
Transport: STDIO
Runtime: Desktop only
Trust: Verified
Published: Sep 16, 2026

Security note

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Overview

AI-generated overview

Lets an assistant look up Magic: The Gathering card prices, deck costs, sealed product EV, and investment trends through the Mythic Index API.

What you can do: Exposes around 19-21 tools over the Mythic Index API for MTG data. It searches and filters cards, retrieves current prices across five vendors and price history, prices full decklists with legality and mana curve analysis, evaluates sealed products, tracks top movers and Reserved List cards, and searches the official Comprehensive Rules. Data covers 99,000+ cards, 971 sets, and 3,900+ sealed products, updated daily.
When to use it: Useful when someone wants an assistant to answer MTG pricing questions, budget deck building, decklist costing, sealed product evaluation, or card investment tracking without leaving the chat. Also handy for rules lookups and format legality checks.
Requirements: Runs locally as a Python package via uvx (Python 3.10+), configured in an MCP client such as Claude Desktop or Claude Code. It works with a bundled public read-only API key; a personal key can be supplied through the MYTHIC_INDEX_API_KEY environment variable, and a self-hosted endpoint through MYTHIC_INDEX_API_URL. Network access to the Mythic Index API is required.

Before you install

The bundled public key is rate limited, so heavy use may need your own MYTHIC_INDEX_API_KEY. Card and price data is sent to the Mythic Index API, a third-party service. The tools are read-only lookups; no purchases or account changes are performed.

Installation

In SourceWeft

Open Mythic Index in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

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:

Or install from source:

bash

git clone https://github.com/wizkid17/mythic-index-mcp.gitcd mythic-index-mcppip install -r requirements.txt

git clone https://github.com/wizkid17/mythic-index-mcp.gitcd mythic-index-mcppip 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

json

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

{  "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

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:

json

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

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

Available Tools (21)

Search & Discovery

Tool	Description
`search_cards`	Fuzzy name search — handles typos and partial names
`find_cards`	Advanced filters: oracle text, color, type, CMC, price, format, Reserved List
`browse_cards`	Browse by price, name, or newest sets
`list_sets`	List and search all 971 MTG sets

Pricing

Sets & Sealed Products

Tool	Description
`get_set_stats`	Rarity distribution, avg price, total value, chase card, top 10
`search_sealed`	Find booster boxes, packs, bundles, commander decks
`get_sealed_ev`	Full EV breakdown with tier analysis (bulk → jackpot)

Investment

Tool	Description
`top_movers`	Biggest price gains and drops over any period
`find_arbitrage`	Cross-vendor profit opportunities (buy retail, sell buylist)
`reserved_list_tracker`	Browse Reserved List cards — never reprinted

Deck Analysis

Tool	Description
`price_deck`	Full decklist pricing: total cost, vendor comparison, mana curve, legality, budget swaps
`suggest_budget_alternatives`	Find cheaper cards with similar type and CMC
`analyze_mana_curve`	Curve visualization, land count evaluation, color source requirements

Strategy

Tool	Description
`check_legality`	Format legality: Standard, Modern, Pioneer, Commander, Legacy, Vintage, Pauper
`evaluate_card`	Strategic roles, keyword abilities, archetype fit
`find_cards_by_role`	Search by role: removal, ramp, card draw, burn, counter, tutor, and 7 more

Rules

System

Data Coverage

Metric	Value
Cards	99,000+
Sets	971
Price sources	TCGPlayer, Card Kingdom, CardMarket, CardSphere, CardHoarder
Price listings	534,000+
Sealed products	3,900+ with EV calculations
Cards with format legality	99,287
Reserved List cards	1,096
Update frequency	Daily 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: