What is webapp-testing?
webapp-testing is a Claude skill by anthropics that test local web applications using Playwright. It is listed under Engineering practice and has 181,821 GitHub stars.
| Type | Claude skill |
|---|---|
| Author | anthropics |
| Repository | anthropics/skills |
| Popularity | 181,821 GitHub stars |
| Category | Engineering practice |
| Security | Low risk (92/100) |
| Rank | #141 of 1,262 Claude skills; #29 in Engineering practice |
| SKILL.md length | 95 lines |
| Last commit | 2026-10-09 |
| Stars this week | +1,326 |
Is webapp-testing safe to install?
webapp-testing scores 92/100 on the MCPMods security check: Low risk. No checks raised a concern. It passed 7 of 9 checks.
Skill results come from a static scan of its SKILL.md for instruction overrides, hidden actions, risky commands and credential access.
| Check | Result |
|---|---|
| No instruction-override phrases | Pass |
| No hidden actions | Pass |
| No pipe-to-shell installers | Pass |
| No obfuscated code | Pass |
| No destructive commands | Pass |
| Doesn't ask for keys or credentials | Pass |
| Makes network requests | Note |
| Runs shell commands | Note |
| Installs no packages | Pass |
What the scan matched
- network:
http:// - shell:
```bash - scripts:
scripts/with_server.py
How do I install webapp-testing?
- Install with the skills CLI. Works for Claude Code and other agents that read skills.
npx skills add https://github.com/anthropics/skills --skill webapp-testing
- Or copy it by hand. Claude Code loads any folder with a SKILL.md from ~/.claude/skills.
git clone https://github.com/anthropics/skills cp -r skills/skills/webapp-testing ~/.claude/skills/webapp-testing
- Use it. Claude loads the skill when a task matches its description. You can also name it in your prompt.
Use the webapp-testing skill to …
Or ask Claude to set it up
Paste this into Claude Code and it installs webapp-testing for you:
Install the "webapp-testing" skill from https://github.com/anthropics/skills/tree/main/skills/webapp-testing into ~/.claude/skills, then tell me in one line what it does.
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