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io.github.gregario/hearthstone-oracle

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Hearthstone card search, deck analysis, strategy coaching, and archetype classification

Source code Documentation

What can you do with io.github.gregario/hearthstone-oracle?

  • Complete card database from HearthstoneJSON — every collectible card, auto-updated
  • Deck decoding and analysis — paste a deck code, get full card list, mana curve, and archetype breakdown
  • Strategy knowledge — archetypes, class identities, matchup dynamics, and game concepts
  • 9 MCP tools — search, lookup, decode, analyze, coach

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).

NPM package hearthstone-oracle
Claude Code 
claude mcp add hearthstone-oracle -- npx -y hearthstone-oracle@0.1.0
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "hearthstone-oracle": {
            "command": "npx",
            "args": [
                "-y",
                "hearthstone-oracle@0.1.0"
            ]
        }
    }
}

Documentation

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

Contents
  1. hearthstone-oracle
  2. Features
  3. Quick Start
  4. Tools
  5. How It Works
  6. Data Source
  7. License

hearthstone-oracle

Hearthstone MCP server with card search, deck analysis, and strategy coaching. Gives LLMs access to every Hearthstone card plus built-in strategy knowledge for deck building and gameplay advice.

Features

  • Complete card database from HearthstoneJSON — every collectible card, auto-updated
  • Deck decoding and analysis — paste a deck code, get full card list, mana curve, and archetype breakdown
  • Strategy knowledge — archetypes, class identities, matchup dynamics, and game concepts
  • 9 MCP tools — search, lookup, decode, analyze, coach

Quick Start

claude mcp add hearthstone-oracle -- npx -y hearthstone-oracle

Card data is downloaded automatically from HearthstoneJSON on first run and stored locally in ~/.hearthstone-oracle/. No API key required.

Claude Desktop

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

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

Tools

ToolDescription
search_cardsSearch cards by name, text, class, cost, type, rarity, set, or keyword
get_cardGet complete details for a specific card with fuzzy matching
get_keywordLook up keyword/mechanic definitions with related cards
decode_deckDecode a deck code into full card list with mana curve
analyze_deckAnalyze a deck's archetype, gameplan, strengths, and matchup profile
get_archetypeLearn about deck archetypes (aggro, control, combo, midrange, tempo, value)
get_class_identityStrategic identity of each Hearthstone class
get_matchupTheoretical matchup dynamics between archetypes
explain_conceptFundamental game concepts explained for Hearthstone

How It Works

Two-layer architecture:

  1. Card data layer — Full card database from HearthstoneJSON, stored in a local SQLite database with FTS5 full-text search. Cards are fetched on first run and updated when newer game builds are available.
  2. Strategy layer — Built-in strategy knowledge covering archetypes, class identities, matchup theory, and core game concepts. Enables the server to provide coaching and analysis, not just raw card data.

Data Source

Card data provided by HearthstoneJSON by HearthSim. Auto-extracted from game files. Unrestricted use.

License

MIT

Frequently asked questions

What is io.github.gregario/hearthstone-oracle?

Hearthstone card search, deck analysis, strategy coaching, and archetype classification

How do I install io.github.gregario/hearthstone-oracle?

It runs on your machine. In Claude Code: claude mcp add hearthstone-oracle -- npx -y hearthstone-oracle@0.1.0. For other clients, paste the JSON configuration from this page into their MCP settings.

Does io.github.gregario/hearthstone-oracle need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is io.github.gregario/hearthstone-oracle open source?

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

Who maintains io.github.gregario/hearthstone-oracle?

It is published by gregario. 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.