Connect Antigravity

Use Terno from the agent in the Google Antigravity IDE.

Server URL: https://mcp.terno.ai/mcp

Preview server URL: https://mcp.terno.ai/mcp/preview (adds app connectors such as Google Ads and GA4)

Before you start

• Google Antigravity installed.
• A Terno AI account. You don’t need to sign up first: when you connect, Terno takes you to sign up if you don’t have an account, or to sign in if you’re signed out, and then shows the consent screen.
• No data source is needed to connect. Ask your assistant to connect one and Terno gives it a link where you add the connection details in Terno. You can also add one in the app; see Connectors.

Connect Terno

1. In the agent side panel, click ⋯, then MCP Servers.

2. Click Manage MCP Servers, then View raw config. This opens ~/.gemini/config/mcp_config.json.

3. Add Terno:

   {
     "mcpServers": {
       "terno": { "serverUrl": "https://mcp.terno.ai/mcp" }
     }
   }

   For the preview server (app connectors such as Google Ads and GA4), use this instead:

   {
     "mcpServers": {
       "terno-preview": { "serverUrl": "https://mcp.terno.ai/mcp/preview" }
     }
   }

4. Save the file.

5. Open Agent settings (Cmd + , on macOS, Ctrl + , on Windows and Linux), go to Customizations, and click Authenticate next to terno.

6. Sign in to Terno in your browser and paste the code back into Antigravity.

Antigravity needs the serverUrl key. url and httpUrl don’t work. In the Antigravity CLI, type /mcp to open the MCP Manager.

Check it works

Ask your assistant something like:

• “Which data sources do I have in Terno?”
• “Using Terno, show the top 10 customers by revenue this year.”

It should call Terno’s tools and answer from your data.

App connectors (preview)

The main server works with your databases and warehouses. To also use app connectors such as Google Ads and GA4, add the preview server in the same way, using https://mcp.terno.ai/mcp/preview. It will come to the main server soon.

Troubleshooting

The sign-in window doesn’t open, or sign-in fails

Complete the sign-in in the browser window or tab your assistant opens, using your Terno account. If it times out, start the connection again.

Terno’s tools don’t show up

Check the server URL is exactly https://mcp.terno.ai/mcp (or https://mcp.terno.ai/mcp/preview for the preview server), and that the Terno server is switched on in your assistant.

”No data sources” or empty answers

Connect a data source in Terno first. The assistant only sees what’s connected in your Terno workspace, within your access rules.

Disconnect

Remove the Terno connector or server in your assistant.