Description
Playwright stealth verify is an agent skill for checking whether a browser driven by Playwright, Puppeteer, Selenium or a CDP connection presents a coherent fingerprint. It uses liarjs as a library against a page the harness already has, so the browser under test keeps its real launch flags, plugins and proxy. The skill answers one question about the harness: does its JavaScript story agree with itself and with what the network layer saw? The check measures the browser and does not modify it, and the project states that it ships no evasions or profiles. The skill shows how to call checkPage with any object that exposes an evaluate method, which Playwright and Puppeteer page objects do. liarjs needs Node 22 or newer and adds no dependencies to an existing Playwright or Puppeteer install. It is aimed at test teams whose automated browsers look wrong or get challenged, and who want to find the source of the inconsistency before it affects their test suite.…
Highlights
- Checks a page the harness already has with checkPage
- Measures without modifying the browser
- Works with Playwright and Puppeteer page objects
- Needs Node 22 or newer
- Adds no dependencies to an existing install
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playwright-stealth-verify FAQ
What does the skill verify?
Whether a Playwright, Puppeteer, Selenium or CDP-driven browser gives a coherent fingerprint, measured from inside the page and against the network view.
How is it used?
Import checkPage from liarjs and pass it the page object from your harness. It runs against the browser exactly as your harness launched it.
Does it change the browser?
No. The project says it only measures and ships no evasions or profiles.
Which frameworks does it support?
Any object that exposes evaluate(expression: string) works. The skill names Playwright, Puppeteer, Selenium and CDP-driven browsers.
What does it require?
Node 22 or newer. Zero runtime dependencies, so it adds nothing to an existing Playwright or Puppeteer install.
What security audits has it passed?
skills.sh lists three audits: Gen Agent Trust Hub Pass, Socket Pass and Snyk Pass.
What are the best playwright-stealth-verify alternatives?
Popular alternatives to playwright-stealth-verify include browser-automation, microsoft/playwright-mcp and playwright-expert. See all playwright-stealth-verify alternatives