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 agentmods add skills/aidotnet/moyucode/playwrightnpx skills add AIDotNet/MoYuCode --skill playwrightgit clone --depth 1 https://github.com/AIDotNet/MoYuCodeWhat 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 | $0.00037 | $0.00910 |
| Opus 5 | $0.00018 | $0.00455 |
| Sonnet 5 | $0.00007 | $0.00182 |
| Haiku 4.5 | $0.00004 | $0.00091 |
Grade A, and why
playwright 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 2d 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 — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Playwright Tool
Description
Cross-browser automation for testing, scraping, and web automation supporting Chromium, Firefox, and WebKit.
Source
- Repository: microsoft/playwright
- License: Apache-2.0
- Maintainer: Microsoft
Installation
npm install playwright
npx playwright install # Install browsers
Usage Examples
Browser Automation
import { chromium, firefox, webkit } from 'playwright';
async function automateTask() {
// Launch any browser
const browser = await chromium.launch({ headless: true });
const context = await browser.newContext({
viewport: { width: 1920, height: 1080 },
userAgent: 'Custom User Agent',
});
const page = await context.newPage();
await page.goto('https://example.com');
// Click, type, interact
await page.click('button.login');
await page.fill('input[name="email"]', '[email protected]');
await page.fill('input[name="password"]', 'password123');
await page.click('button[type="submit"]');
// Wait for navigation
await page.waitForURL('**/dashboard');
await browser.close();
}
Screenshot & PDF
async function captureContent(url: string) {
const browser = await chromium.launch();
const page = await browser.newPage();
await page.goto(url);
// Screenshot
await page.screenshot({
path: 'screenshot.png',
fullPage: true,
});
// PDF (Chromium only)
await page.pdf({
path: 'document.pdf',
format: 'A4',
margin: { top: '1cm', bottom: '1cm' },
});
await browser.close();
}
Web Scraping with Locators
async function scrapeProducts(url: string) {
const browser = await chromium.launch();
const page = await browser.newPage();
await page.goto(url);
// Use locators for reliable element selection
const products = await page.locator('.product-card').all();
const data = await Promise.all(products.map(async (product) => ({
name: await product.locator('.name').textContent(),
price: await product.locator('.price').textContent(),
rating: await product.locator('.rating').getAttribute('data-value'),
})));
await browser.close();
return data;
}
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.
- 2d ago First seen · 158 lines · 37 tokens per session scan A fa36f31fa7c3
playwright is a skill published in the GitHub repository AIDotNet/MoYuCode (84 stars, last pushed 7mo ago), licensed MIT. It adds 37 tokens to every session and 910 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.
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