Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.
Security grade of this SKILL.md: SAFE · how we grade
How to install webapp-testing
npx skills add anthropics/skills --skill webapp-testing -a claude-code
The skills CLI copies this one skill into Claude Code (use -a for another agent). Or read its SKILL.md on GitHub.
What the SKILL.md says
To test local web applications, write native Python Playwright scripts. Helper Scripts Available: scripts/with_server.py - Manages server lifecycle (supports multiple servers). Always run scripts with --help first to see usage. DO NOT read the source until you try running the script first and find that a customized solution is abslutely necessary. These scripts can be very large and thus pollute your context window. They exist to be called directly as black-box scripts rather than ingested into your context window. To start a server, run --help first, then use the helper: Single server: Multiple servers (e.g., backend + frontend): To create an automation script, include only Playwright logic (servers are managed automatically): Inspect rendered DOM: Identify selectors from inspection results. Execute actions using discovered selectors.
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