hearthstone-oracle
The hearthstone-oracle server provides a complete Hearthstone card database with built-in strategy knowledge for deck building, analysis, and gameplay coaching.
Search cards — Find cards by name, text, class, mana cost, type, rarity, set, tribe, or keyword with flexible filtering
Get card details — Retrieve complete stats, text, and keywords for a specific card using exact or fuzzy matching
Look up keywords/mechanics — Get definitions for mechanics like Battlecry or Deathrattle, plus all cards with that mechanic
Decode deck codes — Convert a deck code into a full card list with mana curve and type breakdown
Analyze decks — Classify a deck's archetype, explain its gameplan, and identify strengths, weaknesses, and matchup predictions
Explore archetypes — Learn about aggro, control, combo, midrange, tempo, and value archetypes including win conditions and example decks
Understand class identities — Get the strategic identity of any Hearthstone class, including hero power implications and historical archetypes
Get matchup dynamics — Understand the theoretical matchup between two archetypes and key strategic tensions
Explain game concepts — Get clear explanations of concepts like tempo, card advantage, board control, and mana curve
Card data is stored locally in SQLite (sourced from HearthstoneJSON) with full-text search — no external API required.
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-oracleCard 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
Tool | Description |
| Search cards by name, text, class, cost, type, rarity, set, or keyword |
| Get complete details for a specific card with fuzzy matching |
| Look up keyword/mechanic definitions with related cards |
| Decode a deck code into full card list with mana curve |
| Analyze a deck's archetype, gameplan, strengths, and matchup profile |
| Learn about deck archetypes (aggro, control, combo, midrange, tempo, value) |
| Strategic identity of each Hearthstone class |
| Theoretical matchup dynamics between archetypes |
| Fundamental game concepts explained for Hearthstone |
How It Works
Two-layer architecture:
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.
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
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