The Integrated Browser: Your AI's Testing Ground

In VS Code, the “Simple Browser” is a joke. It's a glorified iframe that barely renders modern web apps.
In Google Antigravity, the Integrated Browser is a first-class citizen—and a powerful tool for your AI agents.

It's not just for you to see your app; it's for your agents to test your app.

How Agents “See” the Browser

When you open the Integrated Browser in Antigravity, the AI agents gain access to it. They don't just see pixels; they see the DOM (Document Object Model) and the Accessibility Tree.

This means an agent can:
1. Read: “What is the text on the submit button?”
2. Interact: “Click the button with ID `#login-btn`.”
3. Verify: “Check if the error message ‘Invalid Password' appeared.”

Workflow: Auto-Testing with Agents

Forget writing Selenium scripts. Just tell the agent what to test.

Scenario: Testing a Login Flow

1. Open the Browser: Click the “Globe” icon and navigate to `http://localhost:3000`.
2. Spawn a Tester Agent:
> “Go to the login page. Try to log in with the username ‘[email protected]' and the password ‘wrongpass'. Verify that a red error message appears. Then, try with the correct password ‘password123' and verify redirection to the dashboard.”

The agent will take control of the browser. You'll see the mouse move, the keys type, and the pages load—all autonomously.

Headless vs. Headed Mode

* Headed Mode (Default): You watch the agent work in the side panel. Great for debugging the tester.
* Headless Mode: The agent runs the browser in the background. Great for running a full regression suite while you code something else.

Recording Sessions

Antigravity allows you to record your own interactions and convert them into a test script (Playwright or Cypress).

1. Click “Record Interaction”.
2. Click through your app manually.
3. Click “Stop”.
4. Ask the AI: “Turn that recording into a Playwright test file.”

Visual Regression Testing

Because the agents have vision capabilities (multimodal), they can spot visual bugs that code tests miss.
> “Check if the navigation bar overlaps with the hero image on mobile view.”

The agent resizes the browser to mobile width, takes a screenshot, analyzes it, and reports back.

Conclusion

The Integrated Browser transforms Antigravity from a code editor into a Quality Assurance Lab. By giving agents eyes and hands, you can catch bugs before they ever leave your local machine.

At BYS Marketing, we use this feature to ensure every pixel is perfect before we ship.

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