How to Connect Claude to Your LEGO Collection Data

Claude is a powerful AI assistant that can access comprehensive LEGO data through Model Context Protocol (MCP). This guide shows you how to connect Claude to Brick Directory for instant access to 70,000+ sets, parts information, marketplace pricing, and your personal collection.

What You’ll Be Able to Do

Once connected, Claude can answer questions like:

Claude accesses real-time data from Rebrickable, BrickLink, Brickset, BrickEconomy, and BrickOwl once you connect these services.

See It In Action

Watch how Brick Directory works with Claude:

Setup Guide

All you need is Claude - no additional software required!

Step 1: Open Claude Settings

  1. Go to claude.ai and sign in
  2. Click Settings (gear icon in bottom left)
  3. Navigate to Connectors

Claude Connectors Settings

Step 2: Add Custom Connector

Click “Add custom connector” and enter:

Add Custom Connector

Step 3: Authenticate

The first time you use Brick Directory, you’ll be prompted to authenticate:

  1. Browser window opens automatically
  2. Sign in with Google or Facebook
  3. Authorization completes and you’re connected!

Connector Success

Step 4: Start Using Brick Directory

Ask Claude about LEGO data:

“What minifigures come with LEGO set 75192?”

Claude will use Brick Directory to provide detailed information!

Using Claude Desktop? The setup is similar - just add the connector through your config file:

Click to show Claude Desktop configuration **Configuration file location:** - macOS/Linux: `~/.config/claude/claude_desktop_config.json` - Windows: `%APPDATA%\Claude\claude_desktop_config.json` **Add this configuration:** ```json { "mcpServers": { "brick-directory": { "command": "npx", "args": ["-y", "@modelcontextprotocol/server-fetch", "https://api.brick.directory/connect"] } } } ``` Restart Claude Desktop. Authentication works the same way (browser opens automatically).

Connecting Your Personal Collection

Want Claude to access your personal LEGO collection? Configure your service credentials through the Brick Directory settings:

Step 1: Get Your API Keys

Get free API keys from these services:

Step 2: Configure in Brick Directory

  1. Go to chat.brick.directory
  2. Sign in with Google or Facebook
  3. Click Settings (gear icon)
  4. Add your API keys for the services you want to use
  5. Credentials are encrypted with AES-256 and stored securely

Step 3: Use in Claude

Now when you ask Claude questions through MCP, it can access your collection:

“Add set 75192 to my Rebrickable collection”

“Show me all sets in my Rebrickable collection”

“What parts am I missing for set 10030?”

Example Conversations

Here are realistic examples of what you can ask Claude:

Set Information

You: “What minifigures come with the UCS Millennium Falcon?”

Claude: Provides complete minifigure list with images and descriptions from Rebrickable

Collection Management

You: “Add set 10030 to my Rebrickable collection”

Claude: Adds the set to your collection and confirms

You: “Show me all Star Wars sets in my Rebrickable collection”

Claude: Lists your Star Wars sets with details

Parts Research

You: “What colors is part 3001 (2x4 brick) available in?”

Claude: Shows all available colors with images

Pricing

You: “What’s the current BrickLink price for set 10030?”

Claude: Provides current market pricing data from BrickLink

Alternative Builds

You: “Show me alternative builds for set 75192”

Claude: Lists MOCs and alternate builds available on Rebrickable

Troubleshooting

Authentication Issues

Problem: Browser doesn’t open for authentication

Solution: Manually visit chat.brick.directory and sign in, then try the MCP connection again

Connection Not Working

Problem: Claude doesn’t seem to use Brick Directory

Solution:

API Key Errors

Problem: “API key invalid” or “Not configured” errors

Solution:

  1. Go to chat.brick.directory
  2. Open Settings and verify your API keys are entered correctly
  3. Test the keys directly on the service website (Rebrickable, BrickLink, etc.)

Slow Responses

Note: First queries may take a few seconds while data loads. Subsequent queries are much faster due to caching.

Privacy and Security

Brick Directory protects your data:

Read our complete Privacy Policy →

What You Can Do Now

With Claude connected to Brick Directory, you can:

  1. Query LEGO Data - Get instant information about any set, part, or minifigure
  2. Manage Your Collection - Add/remove sets from Rebrickable and Brickset
  3. Check Prices - Get current marketplace prices from BrickLink and BrickOwl
  4. Find Parts - Search for specific parts and colors
  5. Discover Alternatives - Find MOCs and alternate builds

Watch it in action: See our YouTube demo for examples.

Powerful Multi-MCP Workflows

One of the most powerful features of using Brick Directory through Claude’s MCP is the ability to combine multiple MCP connectors in a single conversation. Claude can use Brick Directory alongside other tools to create sophisticated workflows.

Example: Gmail + Brick Directory

In the video above, you can see Claude using two MCP connectors simultaneously:

  1. Gmail connector - To read LEGO.com purchase confirmation emails
  2. Brick Directory - To automatically add those purchased sets to your Rebrickable collection

This creates a powerful automation: Claude reads your LEGO order confirmations and syncs your collection automatically!

Example: Google Sheets + Brick Directory

Similarly, you could combine:

Ask Claude: “Read my LEGO collection from Google Sheet and add all sets to my Rebrickable collection”

Why This Matters

This multi-MCP capability is only available when using Claude (Web or Desktop). The standalone Brick Directory chat app at chat.brick.directory doesn’t support combining with other tools.

Choose based on your needs:

Alternative: No Setup Required

Don’t want to configure MCP? Use our standalone web chat interface:

chat.brick.directory

Same features, zero setup:

Community and Support

Stay connected with Brick Directory:

Conclusion

Connecting Claude to Brick Directory unlocks comprehensive LEGO data access through natural conversation. Whether you’re using Claude Web or Claude Desktop, you can now ask questions about sets, manage your collection, and get marketplace pricing—all through simple conversation.

Get started today: Add the Brick Directory connector to Claude!

Have questions? Visit our contact page or check the FAQ.