Google Antigravity Browser Agent: Web Testing & Automation with Gemini 3

Google Antigravity's Browser Agent is a game-changer for web automation. It combines Gemini 3's understanding with actual browser control, enabling intelligent testing, scraping, and interaction without writing complex scripts.

What is the Browser Agent?

The Browser Agent allows Gemini 3 to:

• Navigate websites - Browse like a human user
• Interact with elements - Click, type, scroll, hover
• Extract data - Scrape content intelligently
• Take screenshots - Capture visual evidence
• Run tests - Verify functionality automatically

Setting Up Browser Agent

Enable Browser Agent

In your Antigravity settings:

{
  "antigravity.browserAgent.enabled": true,
  "antigravity.browserAgent.headless": false,
  "antigravity.browserAgent.defaultTimeout": 30000
}

Using with Playwright MCP

For advanced automation, connect Playwright MCP:

{
  "mcpServers": {
    "playwright": {
      "command": "npx",
      "args": ["@anthropic/mcp-server-playwright"],
      "env": {
        "PLAYWRIGHT_BROWSERS_PATH": "0"
      }
    }
  }
}

Basic Browser Operations

Navigation

You: "Go to github.com and search for 'react native' repositories"

Browser Agent:

1. Opens https://github.com
2. Locates search input
3. Types "react native"
4. Submits search
5. Reports results

Data Extraction

You: "Extract all product names and prices from this e-commerce page"

// Generated extraction script
const products = await page.$$eval('.product-card', (cards) => {
  return cards.map((card) => ({
    name: card.querySelector('.product-name')?.textContent?.trim(),
    price: card.querySelector('.product-price')?.textContent?.trim(),
    url: card.querySelector('a')?.href,
  }));
});

console.log(`Found ${products.length} products`);
return products;