README.md
Hearthstone MCP server with card search, deck analysis, and strategy coaching.
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
| Tool | Description |
|---|---|
search_cards |
Search cards by name, text, class, cost, type, rarity, set, or keyword |
get_card |
Get complete details for a specific card with fuzzy matching |
get_keyword |
Look up keyword/mechanic definitions with related cards |
decode_deck |
Decode a deck code into full card list with mana curve |
analyze_deck |
Analyze a deck's archetype, gameplan, strengths, and matchup profile |
get_archetype |
Learn about deck archetypes (aggro, control, combo, midrange, tempo, value) |
get_class_identity |
Strategic identity of each Hearthstone class |
get_matchup |
Theoretical matchup dynamics between archetypes |
explain_concept |
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
Tools (9)
search_cardsSearch cards by name, text, class, cost, type, rarity, set, or keywordget_cardGet complete details for a specific card with fuzzy matchingget_keywordLook up keyword/mechanic definitions with related cardsdecode_deckDecode a deck code into full card list with mana curveanalyze_deckAnalyze a deck's archetype, gameplan, strengths, and matchup profileget_archetypeLearn about deck archetypes (aggro, control, combo, midrange, tempo, value)get_class_identityStrategic identity of each Hearthstone classget_matchupTheoretical matchup dynamics between archetypesexplain_conceptFundamental game concepts explained for HearthstoneConfiguration
claude_desktop_config.json
{"mcpServers": {"hearthstone-oracle": {"command": "npx", "args": ["-y", "hearthstone-oracle"]}}}Try it
→Decode this deck code and tell me the mana curve and archetype: [insert deck code]
→What is the strategic identity of the Mage class in the current meta?
→Explain the difference between a tempo deck and a value deck in Hearthstone.
→Search for all cards with the 'Battlecry' keyword that cost 3 mana or less.
→Analyze the matchup dynamics between a Control Warrior and a Combo Druid.