# Playwright Stealth Verify (agent skill)

> Playwright Stealth Verify is an agent skill (a SKILL.md file) from liarjsdev/liarjs-skills. Check whether a Playwright, Puppeteer, Selenium or CDP-driven browser presents a coherent fingerprint, using liarjs as a library against a Page… It works with Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode and has 518 GitHub stars across a repository of 4 listed skills.

Check whether a Playwright, Puppeteer, Selenium or CDP-driven browser presents a coherent fingerprint, using liarjs as a library against a Page you already have - navigator.webdriver, HeadlessChrome tokens, worker versus main-thread identity, patched-API integrity, WebGL versus WebGPU GPU identity.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/liarjsdev/liarjs-skills |
| Skill path | skills/playwright-stealth-verify/SKILL.md |
| Skill name | playwright-stealth-verify |
| GitHub stars | 518 |
| Installs on skills.sh | 79,640 |
| License | MIT |
| Skills in repo | 4 |
| Plugin marketplace | no |
| Official | no |
| Works with | Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode |
| Category | Testing & QA |
| Last commit | Aug 6, 2026 |

## When it triggers

- Use when asked whether an automated browser looks like a normal one, when a headless setup or a stealth plugin's effect needs measuring rather than assuming, or when an assertion on fingerprint quality belongs in a test suite.

## Add this skill

### Claude Code

```sh
git clone --depth 1 https://github.com/liarjsdev/liarjs-skills.git
cp -r liarjs-skills/skills/playwright-stealth-verify ~/.claude/skills/playwright-stealth-verify   # personal, or .claude/skills in a project
```

In the Claude apps, zip the skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
git clone --depth 1 https://github.com/liarjsdev/liarjs-skills.git
cp -r liarjs-skills/skills/playwright-stealth-verify .agents/skills/playwright-stealth-verify   # repo; ~/.agents/skills for all projects
```

### Cursor

```sh
git clone --depth 1 https://github.com/liarjsdev/liarjs-skills.git
cp -r liarjs-skills/skills/playwright-stealth-verify .cursor/skills/playwright-stealth-verify   # project; ~/.cursor/skills for all projects
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

skills.sh listing: https://www.skills.sh/liarjsdev/liarjs-skills/playwright-stealth-verify

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Canonical page: https://appsgit.com/skills/liarjsdev-playwright-stealth-verify
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