Connect Antigravity to Terminal49

Connect Google Antigravity to the Terminal49 MCP server so its Gemini agent can answer questions with live container and shipment tracking data. Antigravity works with both personal and work Google accounts; for the Gemini app, see Gemini.

No API key required for Antigravity. The Terminal49 MCP server supports OAuth 2.1 with Dynamic Client Registration. Antigravity registers itself automatically, and you sign in with your Terminal49 credentials in the browser.

Prerequisites

Google Antigravity installed and signed in with your Google account.
A Terminal49 account.

Add the server to Antigravity

Add the server to your MCP config

Open ~/.gemini/config/mcp_config.json (create it if it doesn’t exist) and add Terminal49 to the mcpServers object:

{
  "mcpServers": {
    "terminal49": {
      "serverUrl": "https://mcp.terminal49.com",
      "oauth": {}
    }
  }
}

You can also open this file from Antigravity: go to Customizations → Installed, and under MCP Servers select Copy Config File Path.

Authenticate

In Antigravity, go to Customizations → Installed. terminal49 appears under MCP Servers with an Unauthorized error until you sign in. Select Authenticate.

A browser window opens the Terminal49 sign-in page. Log in, choose your organization under Organization access, and select Allow access.

Paste the authorization code

The browser shows an authorization code. Select Copy to Clipboard, paste the code into the field under terminal49 in Antigravity, and select Submit.

Confirm the connection

terminal49 shows a green status with Sign out and the number of tools enabled.

Test your connection

Start a new conversation in Antigravity and ask:

“Using Terminal49, list 3 of my containers and their current status.”

Antigravity asks for permission the first time it calls each Terminal49 tool, for example terminal49/list_containers. See the tools reference for the full list, and Test Numbers for containers you can use during development.

Troubleshooting

Symptom	How to fix
`terminal49` doesn’t appear under MCP Servers	Check that `~/.gemini/config/mcp_config.json` is valid JSON and uses `serverUrl` (not `url`), then reopen Customizations → Installed
`Unauthorized` error on `terminal49`	Select Authenticate and complete the sign-in. If it persists, select Sign out and authenticate again
Authorization code is rejected	Codes are single-use. Select Authenticate again and paste the new code
Tool calls return no data	Check that you chose the right organization when you allowed access. Sign out and authenticate again to pick another one

Gemini – Gemini app custom apps (personal Google accounts)
Claude Code – claude mcp add for Claude Code
VS Code – GitHub Copilot agent mode
MCP Overview – Tools, prompts, and resources reference
MCP Server Quickstart – Full setup, including API-key and local stdio options
Other MCP clients – Generic configuration for any client

​Prerequisites

​Add the server to Antigravity

​Test your connection

​Troubleshooting

​Related guides

Prerequisites

Add the server to Antigravity

Test your connection

Troubleshooting

Related guides