Antigravity CLI configuration example

This example uses Claude Sonnet 4.6 for code and Gemini 3.1 Pro (High) for review through Antigravity CLI (agy).

AGY Manager
    ├── Claude Sonnet 4.6     — code
    └── Gemini 3.1 Pro (High) — review

Before you start

Install and sign in to Antigravity CLI. In ithyno, open Settings → Prerequisites, confirm that AGY is available, and use Manage skills to install its OpenSpec and ithyno skills.

AGY models change frequently

The model list provided by AGY may change as the CLI is updated. The names below are a current example. Use agy models when you need to replace them with models available in your installed version.

Configure the Agents screen

Open Agents and configure the following three entries. Leave Prompt blank.

Name	Role	Command	Args
manager	manager	agy	leave empty
agy-sonnet-code	code	agy	--model claude-sonnet-4-6
agy-gemini-review	review	agy	--model gemini-3.1-pro-high

agents.yaml example

You can also use the following agents.yaml at the project root:

agents:
  - name: manager
    mode: live-shell
    roles: [manager]
    command: agy
    args: []

  - name: agy-sonnet-code
    mode: single-prompt
    roles: [code]
    command: agy
    args:
      - --model
      - claude-sonnet-4-6

  - name: agy-gemini-review
    mode: single-prompt
    roles: [review]
    command: agy
    args:
      - --model
      - gemini-3.1-pro-high

parallelExecution: true

Start a Change

1. After saving the configuration, refresh the Manager terminal.
2. Create a Change or open an existing proposed Change.
3. Select Start.
4. Follow the code and review progress from the Change card or Agents.

This example covers code and review. Add a Worker with the verify role when you also want a separate verification step.

For configurations that mix different CLIs, see Set Up Multiple Agents and Dispatch a Change.