Multi-Context Browser Control

Custom tools can now spawn isolated browser pages within a shared session context.

New properties on ToolExecutionContext:

• browserContext — direct access to Playwright BrowserContext
• createPage() — creates pages with anti-detection scripts applied

Pages inherit session state (cookies, localStorage, proxy config) and are tracked for automatic cleanup on errors.

async call(params, ctx?: ToolExecutionContext) {
  const page = await ctx.createPage();
  try {
    await page.goto(url);
    // ... operations without affecting main page
    return { output: 'Success' };
  } finally {
    await page.close();
  }
}

This enables:

• Email activation links without losing form state
• Cross-domain data lookups mid-workflow
• Parallel page operations
• Sub-agent delegation to isolated pages