Google Antigravity

Prerequisites

https://mintcdn.com/controlplanecorporation/rFQpIcXts1y-5L7u/icons/antigravity.png?fit=max&auto=format&n=rFQpIcXts1y-5L7u&q=85&s=48d54825666f9af129853a040db724a6

Download Antigravity

Control Plane account

For the latest MCP configuration options in Antigravity, see the official Google Antigravity documentation.

Add the MCP server

Edit the MCP config file

Open mcp_config.json in your editor:

OS	Path
macOS / Linux	`~/.gemini/config/mcp_config.json`
Windows	`%USERPROFILE%\.gemini\config\mcp_config.json`

Create the .gemini/config directory and mcp_config.json file if they don’t exist.

Add the Control Plane server

{
  "mcpServers": {
    "cpln": {
      "serverUrl": "https://mcp.cpln.io/mcp"
    }
  }
}

Save the file.

Authenticate

Open Antigravity. The agent reports an MCP Error for the new server — click it, then View MCP Settings, then Authenticate.

If you don’t see an Authenticate button there, open Settings → Customizations and click Authenticate next to the cpln MCP.

Your browser opens:

Sign in to Control Plane (Google, GitHub, Microsoft, or SAML).
Select the orgs you want Antigravity to access.
Click Authorize.

The browser redirects to an Antigravity page with a code — copy it.

Paste the code

Back in Antigravity, paste the code into the prompt. The cpln server is now connected.

Use it

In the agent, ask “list GVCs in org <your-org>” (using one of the orgs you authorized) to confirm.

Example conversation

Set Context

Use org "my-org" and gvc "my-gvc" for context.

Deploy a Workload

Create a publicly accessible workload called "my-api" using nginx:latest on port 80.

Get the Endpoint

Monitor the readiness of my-api and give me the public endpoint once it's ready.

Troubleshooting

Need to change which orgs are authorized

Open Settings → Customizations, click Sign Out next to the cpln MCP, then click Authenticate to start the OAuth flow again. Sign in again and adjust your org selections on the consent screen.

Google Antigravity

Prerequisites