Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add LambdaTest/agent-skills --skill puppeteer-skillgit clone --depth 1 https://github.com/LambdaTest/agent-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/lambdatest/agent-skills/puppeteer-skill)<a href="https://agentmods.dev/skills/lambdatest/agent-skills/puppeteer-skill"><img src="https://agentmods.dev/badge/skills/lambdatest/agent-skills/puppeteer-skill/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/lambdatest/agent-skills/puppeteer-skill"><img src="https://agentmods.dev/badge/skills/lambdatest/agent-skills/puppeteer-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00047 | $0.01022 |
| Opus 5 | $0.00023 | $0.00511 |
| Sonnet 5 | $0.00009 | $0.00204 |
| Haiku 4.5 | $0.00005 | $0.00102 |
Grade A, and why
puppeteer-skill scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Puppeteer Automation Skill
Core Patterns
Basic Script
const puppeteer = require('puppeteer');
(async () => {
const browser = await puppeteer.launch({ headless: 'new' });
const page = await browser.newPage();
await page.setViewport({ width: 1280, height: 720 });
await page.goto('https://example.com', { waitUntil: 'networkidle0' });
await page.type('#username', '[email protected]');
await page.type('#password', 'password123');
await page.click('button[type="submit"]');
await page.waitForNavigation({ waitUntil: 'networkidle0' });
const title = await page.title();
console.log('Title:', title);
await browser.close();
})();
Wait Strategies
// Wait for selector
await page.waitForSelector('.result', { visible: true, timeout: 10000 });
// Wait for navigation
await Promise.all([
page.waitForNavigation({ waitUntil: 'networkidle0' }),
page.click('a.nav-link'),
]);
// Wait for function
await page.waitForFunction('document.querySelector(".count").innerText === "5"');
// Wait for network request
const response = await page.waitForResponse(resp =>
resp.url().includes('/api/data') && resp.status() === 200
);
Screenshot & PDF
await page.screenshot({ path: 'screenshot.png', fullPage: true });
await page.pdf({ path: 'page.pdf', format: 'A4', printBackground: true });
Network Interception
await page.setRequestInterception(true);
page.on('request', request => {
if (request.resourceType() === 'image') request.abort();
else request.continue();
});
// Mock API
page.on('request', request => {
if (request.url().includes('/api/data')) {
request.respond({
status: 200,
contentType: 'application/json',
body: JSON.stringify({ items: [] }),
});
} else request.continue();
});
TestMu AI Cloud
For full setup, capabilities, and shared capability reference, see reference/cloud-integration.md.
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 137 lines · 47 tokens per session scan A a0d642f6384f
puppeteer-skill is a skill published in the GitHub repository LambdaTest/agent-skills (366 stars, last pushed 1mo ago), licensed MIT. It adds 47 tokens to every session and 1,022 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
browse
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playwright-cli
A command-line tool for controlling Chromium, Firefox, and WebKit browsers, including navigation, page interaction, screenshots, PDFs, and recorded actions.
webapp-testing
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.
create-verification-skill
Create a repo-local verification skill and exhaustive feature map for driving a real app through its UI, CLI, or API. Use for "create a verification skill", "make a verify skill for this repo", or "document how agents can verify this app".
browser-qa
A browser-based quality check for deployed web pages and user flows. It uses browser automation to test rendering, navigation, forms, interactions, responsive behaviour, and accessibility-related issues.
test-electron-app
Drive the real running PostHog Electron app (live tRPC, workspace-server, real data) over CDP with agent-browser. Connect to the running app on port 9222, test desktop changes against a local Django stack, snapshot the accessibility tree, inspect network requests, and screenshot only when explicitly asked. Use when…