Summary
Connects Claude to the complete Hearthstone card database via HearthstoneJSON with nine tools for search, deck analysis, and strategy coaching. You can search cards by any attribute (class, cost, keywords, card text), decode deck codes into full lists with mana curves, and get archetype analysis with matchup theory. The server maintains a local SQLite database with FTS5 search and includes built-in strategy knowledge covering class identities, archetypes like aggro and control, and core game concepts. Reach for this when you need Claude to build decks, evaluate card synergies, or provide gameplay advice without manually copying card databases or explaining Hearthstone mechanics yourself. No API key required since it pulls directly from HearthstoneJSON and caches locally.
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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
Featured
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Categories
Registryactive
Packagehearthstone-oracle
TransportSTDIO
UpdatedMar 17, 2026
