Stagehand

AI browser automation with natural language for interaction/extraction. Extends Playwright's Page object — key concepts: page.goto(url) navigates, page.locator() finds elements, expect(locator).toBeVisible() asserts. Stagehand adds page.act() (natural language actions) and page.extract() (structured data extraction) on top.

When to Use

• Automating browser flows where selectors are fragile or unknown
• Extracting structured data from web pages
• Discovering page elements before writing precise selectors
• Don't use for: deterministic tests (playwright), static scraping, non-browser

Critical Patterns

✅ REQUIRED: page.act() for AI-Driven Actions

Natural language instructions, Stagehand finds element and acts.