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Connect Google Antigravity to Brickmaster

Add Brickmaster as a remote MCP server in Antigravity 2.0, IDE, or CLI, then authenticate through its built-in public OAuth flow.

Set up Antigravity

Brickmaster remote MCP server

https://api.brickmaster.app/mcp
  1. Open Antigravity Settings → Customizations. In the IDE, use MCP Servers → Manage MCP Servers → View raw config; in Antigravity CLI, use `/mcp` to open the MCP manager.
  2. Add the configuration below to the global `~/.gemini/config/mcp_config.json` file or your workspace's `.agents/mcp_config.json`, then refresh or enable Brickmaster.
  3. Choose Authenticate. Complete Brickmaster sign-in in the browser, copy the authorization code if prompted, and return it to Antigravity.
  4. Select at least one collection and a default, then confirm the nine Brickmaster tools appear before asking a collection question.

mcp_config.json

{
  "mcpServers": {
    "brickmaster": {
      "serverUrl": "https://api.brickmaster.app/mcp"
    }
  }
}

Do not add a static Authorization header, client ID, or client secret. Brickmaster uses Antigravity's DCR path. Antigravity requires `serverUrl`; legacy `url` and `httpUrl` keys are not supported.

Read the official Google Antigravity MCP documentationRead the official Gemini CLI migration documentation

What happens during authorization

The AI app opens Brickmaster in your browser. Brickmaster shows the requesting application and its exact return address, then asks you to sign in and choose which collections it may read. The AI app receives a Brickmaster-only MCP credential—never your Brickmaster sign-in token or Supabase session.

Never paste an API key, Supabase token, Brickmaster session, client secret, or custom Authorization header into the AI app. A compatible host discovers Brickmaster's public OAuth flow from the server URL.

What Antigravity can ask

  • List only the collections you selected when connecting
  • Summarize sets, minifigures, ownership, build states, brands, and locations
  • Search your collection and inspect one item's safe catalog and build context
  • Find duplicate copies and collectible-minifigure series gaps
  • Compare LEGO theme progress and review bounded build history
  • Search Brickmaster's global LEGO and alt-brick set catalog

Prompts to try

  • “Do I own Rivendell, and how many copies do I have?”
  • “Which sealed sets under 1,000 pieces could I build this weekend?”
  • “Show my duplicate sets and loose minifigures.”
  • “Which LEGO themes am I closest to completing?”
  • “Summarize what I built this year and how long it took.”

Change access or disconnect

In Brickmaster, open Settings → AI connections. You can change this app's selected collections, disconnect it, or disconnect every AI app. Brickmaster revocation takes effect immediately even if Antigravity still displays the old connection.

The AI app processes tool inputs and results under its own terms, retention, and training policies. Brickmaster excludes email addresses, household members, prices paid, sellers, acquisition sources, private notes, OAuth details, and internal database fields. The connector cannot add, edit, or delete anything. Read Brickmaster's privacy policy for details.

Browse other AI appsOpen Brickmaster settings