Workflow Automation - Login, navigate, fill forms - Process invoices in old web app - QA testing Monitoring - Site change detection - Price alerts - Stock notifications Scraping - Dynamic content - JS-heavy sites - Authentication required Testing - E2E test generation - Visual regression - A11y audits

Playwright + AI Pattern

python from playwright.syncapi import syncplaywright import anthropic client = anthropic.Anthropic() with syncplaywright() as p: browser = p.chromium.launch(headless=False) page = browser.newpage() page.goto("https://example.com") prompt = "HTML: " + page.content()[:30000] + ". Give me a Playwright selector for the submit button. Output just the selector string." response = client.messages.create( model="claude-sonnet-4-6", messages=[{"role": "user", "content": prompt}] ) selector = response.content[0].text.strip() page.click(selector)

python response = client.beta.messages.create( model="claude-sonnet-4-6", tools=[{ "type": "computer20250124", "name": "computer", "displaywidthpx": 1920, "displayheightpx": 1080, }], messages=[{"role": "user", "content": "Login to my-app.com with email X and password Y, then download my latest invoice."}] ) Claude takes screenshots, decides clicks.

Retry with backoff: pages glitch - Timeout: don't hang forever - Screenshot on failure: debug aid - Selector resilience: prefer text class

For sites blocking automation: - Residential proxies (Bright Data, Oxylabs) - Random delays between actions - Real user agent - Cookie persistence

For 1K automations/month: - Playwright self-hosted: $5 compute - Browserbase: $25-100 - Computer Use: $50-200 (per action cost)

Production Architecture

Queue jobs (SQS, BullMQ) - Worker pool (Lambda, EC2) - Browser pool (Browserless, custom) - Result storage (S3, Postgres) - Monitoring (Sentry, Datadog)

No retry logic - Static selectors that break - No screenshots on failure - Trusting AI selector blindly (test on multiple pages) - Ignoring rate limits

AI Browser Automation 2026 — Guide

AI Browser Automation 2026

Browser automation augmented with AI in 2026. Why AI + Browser? - Traditional: brittle selectors break - AI: describe what you want - Computer Use: AI controls browser directly Tools Traditional + AI - Playwright + Claude: code + reasoning - Puppeteer + Claude: similar AI-First - Browserbase: managed browser - Skyvern: workflow automation - Anthropic Computer Use: AI as user Anti-Detection - Play…

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