warhammer-oracle

Warhammer 40K rules, unit stats, and game flow — as an MCP server.

Ask your AI assistant about datasheets, keywords, phase sequences, and more. Covers Warhammer 40,000, Combat Patrol, and Kill Team.

Installation

npx warhammer-oracle

Or install globally:

npm install -g warhammer-oracle

Configuration

Claude Desktop

Add to your claude_desktop_config.json:

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

Claude Code

claude mcp add warhammer-oracle -- npx -y warhammer-oracle

Tools

lookup_unit

Look up a unit datasheet by name. Returns stat profiles, ranged and melee weapons, abilities, and keywords.

"Look up the Intercessor Squad datasheet"
"What are the stats for a Leman Russ Battle Tank?"

Parameters: unit_name (required), faction (optional), game_mode (optional: 40k, combat_patrol, kill_team)

lookup_keyword

Look up a keyword or rule. Returns the official definition, a plain English explanation, examples, and which game modes it applies to.

"What does Devastating Wounds do?"
"Explain the Feel No Pain keyword"

Parameters: keyword (required), game_mode (optional)

lookup_phase

Look up a game phase by name. Returns step-by-step instructions and tips.

"Walk me through the Shooting phase"
"How does the Firefight phase work in Kill Team?"

Parameters: phase_name (required), game_mode (optional, default: 40k)

search_units

Search units by name, faction, or keywords. Returns a compact list (max 10 results) with faction, points, and keywords.

"Find all Necron units under 100 points"
"Search for units with the Fly keyword"

Parameters: query (required), faction (optional), max_points (optional), game_mode (optional)

compare_units

Compare 2-4 units side by side. Shows full datasheets for each unit in a single response.

"Compare Intercessors vs Tactical Marines"
"Compare the Leman Russ, Predator, and Hammerhead side by side"

Parameters: units (required, array of 2-4 unit names)

game_flow

Show the full turn sequence for a game mode, or highlight where you are in the turn and what comes next.

"Show me the 40K turn sequence"
"I'm in the Shooting phase — what's next?"
"Show the Kill Team turn sequence"

Parameters: current_phase (optional), game_mode (optional, default: 40k)

Data

All data is embedded at build time — no network calls at runtime.

| Category | Count | Source | |---|---|---| | 40K unit datasheets | 2,642 | BSData/wh40k-10e | | Kill Team operatives | 506 | BSData/wh40k-killteam | | Shared rules | 33 (40K) + 22 (KT) | BSData | | Curated keywords | 25 | Hand-written, plain English | | Game mode sequences | 3 | Hand-curated (40K, Combat Patrol, Kill Team) |

Game modes

• Warhammer 40,000 (40k) — full-scale battles
• Combat Patrol (combat_patrol) — smaller, starter-friendly format
• Kill Team (kill_team) — squad-level skirmish game

Development

npm install
npm run build
npm test

To refresh unit data from BSData:

npm run fetch-data
npm run build

License

MIT (for the MCP server code).

Unit data sourced from the BSData community project. Game rules and army rules are the intellectual property of Games Workshop. This tool provides reference data for personal use during gameplay.