OfficialTesting
Webapp Testing skill
Tests local web apps with Playwright, including screenshots and browser logs.
Webapp Testing is Anthropic’s Playwright skill for driving a locally running web app.
The Webapp Testing skill tests local web apps with Playwright. With it the agent can check front-end behavior, debug UI issues, capture screenshots and read browser console output, which closes the loop after it writes front-end code. Anthropic publishes it under Apache-2.0 in the example-skills plugin for Claude Code; it is pre-installed in the Claude apps on paid plans and available through the Skills API.
Install
From the skill’s source repository:
/plugin marketplace add anthropics/skills
/plugin install example-skills@anthropic-agent-skills
- Skill
- Webapp Testing
Questions
Which browser tool does Webapp Testing use?
Playwright.
What can the agent check with Webapp Testing?
Front-end behavior and UI issues, with screenshots and browser console output.
What kind of app does Webapp Testing drive?
A locally running web app.
How do I install Webapp Testing in Claude Code?
Add the anthropics/skills marketplace, then install the example-skills plugin with the two commands above.
Sources
- Webapp Testing source
- License: Apache-2.0
Checked October 2, 2026.