English Français العربية

io.github.gregario/lego-oracle

Official registry Other

LEGO sets, parts, minifigs, and inventories as an MCP server

Source code Documentation

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 lego-oracle
Claude Code 
claude mcp add lego-oracle -- npx -y lego-oracle@0.1.1
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "lego-oracle": {
            "command": "npx",
            "args": [
                "-y",
                "lego-oracle@0.1.1"
            ]
        }
    }
}

Documentation

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

Contents
  1. LEGO Oracle
  2. Install
  3. Tools
  4. Data
  5. Development
  6. Attribution
  7. License

LEGO Oracle

LEGO sets, parts, minifigs, and inventories. An MCP server.

Ask your AI assistant about LEGO sets, find specific bricks, look up minifigures, browse themes, and compare sets. All backed by Rebrickable's catalog (26k sets, 62k parts, 17k minifigs), not hallucinations.

10 tools. Zero config. Works with every MCP-compatible IDE.

Install

npx -y lego-oracle
Add to your IDE

Claude Code

claude mcp add lego-oracle -- npx -y lego-oracle

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%/Claude/claude_desktop_config.json (Windows):

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

Cursor

Add to .cursor/mcp.json:

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

VS Code (Copilot)

Add to .vscode/mcp.json:

{
  "servers": {
    "lego-oracle": {
      "command": "npx",
      "args": ["-y", "lego-oracle"]
    }
  }
}

Windsurf

Add to ~/.codeium/windsurf/mcp_config.json:

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

Zed

Add to settings.json:

{
  "context_servers": {
    "lego-oracle": {
      "command": {
        "path": "npx",
        "args": ["-y", "lego-oracle"]
      }
    }
  }
}

Tools

Set Tools
ToolDescription
search_setsSearch for sets by name, theme, year, or piece count. Full-text search with filters.
get_setGet complete set details: inventory (grouped by part category), minifigures, theme hierarchy.
compare_setsCompare 2-4 sets side by side: piece count, year, theme, minifigs, shared parts.
Part Tools
ToolDescription
search_partsSearch parts by name, category, colour, or material.
get_partGet part details including available colours and mold/print variants.
find_part_in_setsFind which sets contain a specific part (optionally in a specific colour), sorted by quantity.
Minifig Tools
ToolDescription
search_minifigsSearch minifigures by name.
get_minifigGet minifig details and every set it appears in.
Discovery Tools
ToolDescription
browse_themesBrowse the LEGO theme hierarchy. Top-level themes or drill into sub-themes with set counts.
find_mocsFind community alternate builds (MOCs) for a set's parts.

Data

All data is embedded at build time from Rebrickable. No network calls at runtime.

CategoryCount
Sets26,339
Parts61,702
Colours275
Minifigures16,646
Inventory entries1,483,652
Part relationships35,757
Themes490

Data is updated daily via GitHub Actions. New npm versions are published automatically when Rebrickable data changes.

Development

npm install
npm run build
npm test             # 141 tests

To refresh data from Rebrickable:

npm run fetch-data
npm run build

Attribution

Data from Rebrickable. LEGO is a trademark of the LEGO Group. This project is not produced by or endorsed by the LEGO Group.

License

MIT

Frequently asked questions

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

LEGO sets, parts, minifigs, and inventories as an MCP server

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

It runs on your machine. In Claude Code: claude mcp add lego-oracle -- npx -y lego-oracle@0.1.1. For other clients, paste the JSON configuration from this page into their MCP settings.

Does io.github.gregario/lego-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/lego-oracle open source?

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

Who maintains io.github.gregario/lego-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.