Amazon Ads, Seller Central & Vendor Central in Google Gemini

How do I connect Amazon Ads to Google Gemini?

Google Gemini connects to Amazon Ads, Seller Central, and Vendor Central through the Marketplace Ad Pros MCP server. In the Gemini app, open Settings, then Connected Apps, add a custom app with the server URL https://app.marketplaceadpros.com/mcp, and sign in. Developers can add the same URL to Gemini CLI or Google Antigravity, where an API key in the config is the reliable route today.

Last updated: September 23, 2026. Setup steps follow Google's documentation for Gemini custom apps, Gemini CLI, and Antigravity.

Gemini app (gemini.google.com)

1. On a computer, go to gemini.google.com. Custom apps are added on the web and then sync to the mobile app.
2. Open Settings and select Connected Apps.
3. Under Custom apps, select Add a custom app.
4. Enter the server URL https://app.marketplaceadpros.com/mcp. Leave Advanced features alone; no client ID or secret is needed.
5. Select Next, sign in with your Marketplace Ad Pros login, and choose which permissions to grant.
6. Start a new chat and ask about your Amazon data.

Gemini CLI

Add the server, then sign in from inside Gemini CLI:

gemini mcp add --transport http marketplace-ad-pros https://app.marketplaceadpros.com/mcp

/mcp auth marketplace-ad-pros

Or add it to ~/.gemini/settings.json yourself. OAuth is discovered automatically:

{
  "mcpServers": {
    "marketplace-ad-pros": {
      "httpUrl": "https://app.marketplaceadpros.com/mcp"
    }
  }
}

Google Antigravity — use an API key

Antigravity's browser sign-in for third-party MCP servers is unreliable at the moment: it asks you to paste an authorization code back into the editor, and the sign-in often has to be repeated. Google has open issues about it, and recommends an API key in the meantime. Connect with a key instead of signing in.

1. Create an MCP key on the Marketplace Ad Pros Integrations page.
2. In the agent side panel, open the … menu, select MCP Servers, then Manage MCP Servers and View raw config.
3. Add the server to mcp_config.json with your key, and save:

{
  "mcpServers": {
    "marketplace-ad-pros": {
      "serverUrl": "https://app.marketplaceadpros.com/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_MCP_KEY"
      }
    }
  }
}

Use serverUrl — Antigravity doesn't read url or httpUrl. If you'd rather sign in, the Authenticate button under Customizations runs the browser flow; expect to repeat it.

API key in Gemini CLI

The same key works in Gemini CLI, using httpUrl rather than serverUrl:

{
  "mcpServers": {
    "marketplace-ad-pros": {
      "httpUrl": "https://app.marketplaceadpros.com/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_MCP_KEY"
      }
    }
  }
}

Example Prompts for Gemini

• "Which Sponsored Products search terms spent over $50 in the last 30 days with no orders?"
• "What was my TACoS last month for each marketplace?"
• "Which ASINs have less than 30 days of FBA inventory but rising ad spend?"
• "Compare Vendor Central ordered revenue with ad spend week over week for the last 8 weeks."
• "Write a script that emails me a weekly ACOS summary by campaign." (Gemini CLI or Antigravity)

Want more? Browse 50 Amazon Ads prompts for AI.