Google Antigravity

Antigravity CLI

Add the server:


agy mcp add korala https://api.korala.ai/mcp

Start agy, run /mcp and sign in next to korala. Antigravity opens a browser.
Approve the connection on Korala’s consent page. See Permissions and safety.

The sign-in needs an interactive session. Run it once; Antigravity keeps the token and refreshes it.

Antigravity app and IDE

Antigravity reads MCP servers from ~/.gemini/config/mcp_config.json, which the app, the IDE and the CLI share. agy mcp add above adds Korala to all three. To edit the file yourself:

Antigravity app: open Settings at the bottom left, then Customizations. Installed MCP servers are listed there.
Antigravity IDE: open the … menu at the top of the agent panel, choose MCP Servers, then Manage MCP Servers and View raw config.

Add Korala to mcpServers. Antigravity names the key serverUrl:


{
  "mcpServers": {
    "korala": {
      "serverUrl": "https://api.korala.ai/mcp"
    }
  }
}

To sign in:

Open Customizations in Agent Settings and choose Authenticate next to korala.
Sign in to Korala in the browser and approve the connection on the consent page.
Copy the authorization code the browser shows, paste it into the settings panel and choose Submit.

For one project only, put the same block in .agents/mcp_config.json in the workspace.

The Korala plugin

The Korala plugin for Antigravity bundles the same server with a skill and rules that tell the agent how to draft, prepare, send and track documents. Antigravity installs plugins from a folder:


agy plugin install ./korala

Then sign in with /mcp as above.

If you installed the Gemini CLI extension, agy plugin import gemini brings its server across. It does not bring the skill.

API key alternative

For machines where nobody can open a browser:


agy mcp add \
  -e KORALA_API_KEY_ID=your-key-id \
  -e KORALA_API_SECRET=your-secret \
  korala-local npx -y @korala/mcp

Put the flags before the server name. See API key (CI and headless).