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Test a web app through the browser

Inspect the rendered page before exercising a user journey. Anthropic includes Playwright examples and a helper for starting local servers.

176,380 · GitHubanthropics/skillsEditorial selection · source reviewedAuthor: Anthropic Apache-2.0 Revision 41bbe19
USE CASES

When to use it

  1. Check form submission and success states

  2. Reproduce a dynamic interface bug

  3. Capture screenshots and console messages

What you’ll get

A reproducible browser scenario with observed results and supporting artifacts.

For example

Test the local signup form with test data: field errors, successful submission and repeated clicks. Inspect the DOM first and save result screenshots.
Original, requirements and limits

Original skill: Anthropic. Editorial description: kossolapov.com.

Agent
  • An agent that can read Agent Skills instructions; tool access depends on the host
Tools
  • Python, Playwright and its installed browser
  • An authorized local development server and test data
Access
  • Test account only if the scenario requires authentication
Limits
  • The server helper executes supplied shell commands; use only reviewed project commands.
  • Its generic networkidle wait may need replacement with a specific readiness condition.
  • Inspect helper process cleanup for long-running or noisy servers; this is not a sandbox.
  • Editorial selection based on source inspection, not a comparative performance certification.