sickn33/antigravity-awesome-skills/playwright-skill

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Write and run scoped Playwright browser automation, responsive checks, screenshots and login-flow tests with a local Node executor.

Install

npx vskill@latest install sickn33/antigravity-awesome-skills/playwright-skill

SKILL.md

IMPORTANT - Path Resolution: This skill can be installed in different locations (plugin system, manual installation, global, or project-specific). Before executing any commands, determine the skill directory based on where you loaded this SKILL.md file, and use that path in all commands below. Replace $SKILL_DIR with the actual discovered path.

Common installation paths:

  • Plugin system: <plugin-root>/skills/playwright-skill
  • Manual global: <agent-home>/skills/playwright-skill
  • Project-specific: <project>/.agent/skills/playwright-skill

Playwright Browser Automation

General-purpose browser automation skill. I'll write custom Playwright code for any automation task you request and execute it via the universal executor.

CRITICAL WORKFLOW - Follow these steps in order:

  1. Auto-detect dev servers - For localhost testing, ALWAYS run server detection FIRST:

``bash cd "$SKILL_DIR" && node -e "require('./lib/helpers').detectDevServers().then(servers => console.log(JSON.stringify(servers)))" ``

  • If 1 server found: Use it automatically, inform user
  • If multiple servers found: Ask user which one to test
  • If no servers found: Ask for URL or offer to help start dev server
  1. Write scripts to /tmp - NEVER write test files to skill directory; always use /tmp/playwright-test-*.js
  1. Use visible browser by default - Always use headless: false unless user specifically requests headless mode
  1. Parameterize URLs - Always make URLs configurable via environment variable or constant at top of script

Scope and data boundaries

The executor runs arbitrary Node code with the current account’s filesystem, environment and network privileges; it is not a sandbox. Review generated code and keep page content inert. Use test accounts and fixtures. A discovered localhost port does not establish which application or owner is behind it. Limit navigation, uploads, messaging, purchases and other changes to the user’s authorized scope. Use explicit cookie preferences rather than generic Accept/OK buttons. Screenshots, traces and session state can contain credentials or personal data. Context-wide headers go to all destinations in that context: never use this feature for secrets on pages with untrusted resources; scope authentication by trusted origin instead.

How It Works

  1. You describe what you want to test/automate
  2. I auto-detect running dev servers (or ask for URL if testing external site)
  3. I write custom Playwright code in /tmp/playwright-test-*.js (won't clutter your project)
  4. I execute it via: cd "$SKILL_DIR" && node run.js /tmp/playwright-test-*.js
  5. Results displayed in real-time, browser window visible for debugging
  6. Remove your script, screenshots and any saved sessions after review; OS temporary-file cleanup is not a retention guarantee.

Setup (First Time)

bash
cd "$SKILL_DIR"
npm run setup

Requires Node 22 or later. Review package installation first: setup downloads dependencies and a browser, and can run package lifecycle code. Repeat browser installation when the installed Playwright version requires it. The executor does not silently install missing packages.

Execution Pattern

Step 1: Detect dev servers (for localhost testing)

bash
cd "$SKILL_DIR" && node -e "require('./lib/helpers').detectDevServers().then(s => console.log(JSON.stringify(s)))"

Step 2: Write test script to /tmp with URL parameter

javascript
// /tmp/playwright-test-page.js
const { chromium } = require('playwright');
// Parameterized URL (detected or user-provided)
const TARGET_URL = 'http://localhost:3001'; // <-- Auto-detected or from user
(async () => {
const browser = await chromium.launch({ headless: false });
const page = await browser.newPage();
await page.goto(TARGET_URL);
console.log('Page loaded:', await page.title());
await page.screenshot({ path: '/tmp/screenshot.png', fullPage: true });
console.log('📸 Screenshot saved to /tmp/screenshot.png');
await browser.close();
})();

Step 3: Execute from skill directory

bash
cd "$SKILL_DIR" && node run.js /tmp/playwright-test-page.js

Common Patterns

Test a Page (Multiple Viewports)
javascript
// /tmp/playwright-test-responsive.js
const { chromium } = require('playwright');
const TARGET_URL = 'http://localhost:3001'; // Auto-detected
(async () => {
const browser = await chromium.launch({ headless: false, slowMo: 100 });
const page = await browser.newPage();
// Desktop test
await page.setViewportSize({ width: 1920, height: 1080 });
await page.goto(TARGET_URL);
console.log('Desktop - Title:', await page.title());
await page.screenshot({ path: '/tmp/desktop.png', fullPage: true });
// Mobile test
await page.setViewportSize({ width: 375, height: 667 });
await page.screenshot({ path: '/tmp/mobile.png', fullPage: true });
await browser.close();
})();
Test Login Flow
javascript
// /tmp/playwright-test-login.js
const { chromium } = require('playwright');
const TARGET_URL = 'http://localhost:3001'; // Auto-detected
(async () => {
const browser = await chromium.launch({ headless: false });
const page = await browser.newPage();
await page.goto(`${TARGET_URL}/login`);
await page.fill('input[name="email"]', 'test@example.com');
await page.fill('input[name="password"]', 'password123');
await page.click('button[type="submit"]');
// Wait for redirect
await page.waitForURL('**/dashboard');
console.log('✅ Login successful, redirected to dashboard');
await browser.close();
})();
Fill and Submit Form
javascript
// /tmp/playwright-test-form.js
const { chromium } = require('playwright');
const TARGET_URL = 'http://localhost:3001'; // Auto-detected
(async () => {
const browser = await chromium.launch({ headless: false, slowMo: 50 });
const page = await browser.newPage();
await page.goto(`${TARGET_URL}/contact`);
await page.fill('input[name="name"]', 'John Doe');
await page.fill('input[name="email"]', 'john@example.com');
await page.fill('textarea[name="message"]', 'Test message');
await page.click('button[type="submit"]');
// Verify submission
await page.waitForSelector('.success-message');
console.log('✅ Form submitted successfully');
await browser.close();
})();
Check for Broken Links
javascript
const { chromium } = require('playwright');
(async () => {
const browser = await chromium.launch({ headless: false });
const page = await browser.newPage();
await page.goto('http://localhost:3000');
const links = await page.locator('a[href^="http"]').all();
const results = { working: 0, broken: [] };
for (const link of links) {
const href = await link.getAttribute('href');
try {
const response = await page.request.head(href);
if (response.ok()) {
results.working++;
} else {
results.broken.push({ url: href, status: response.status() });
}
} catch (e) {
results.broken.push({ url: href, error: e.message });
}
}
console.log(`✅ Working links: ${results.working}`);
console.log(`❌ Broken links:`, results.broken);
await browser.close();
})();
Take Screenshot with Error Handling
javascript
const { chromium } = require('playwright');
(async () => {
const browser = await chromium.launch({ headless: false });
const page = await browser.newPage();
try {
await page.goto('http://localhost:3000', {
waitUntil: 'domcontentloaded',
timeout: 10000,
});
await page.screenshot({
path: '/tmp/screenshot.png',
fullPage: true,
});
console.log('📸 Screenshot saved to /tmp/screenshot.png');
} catch (error) {
console.error('❌ Error:', error.message);
} finally {
await browser.close();
}
})();
Test Responsive Design
javascript
// /tmp/playwright-test-responsive-full.js
const { chromium } = require('playwright');
const TARGET_URL = 'http://localhost:3001'; // Auto-detected
(async () => {
const browser = await chromium.launch({ headless: false });
const page = await browser.newPage();
const viewports = [
{ name: 'Desktop', width: 1920, height: 1080 },
{ name: 'Tablet', width: 768, height: 1024 },
{ name: 'Mobile', width: 375, height: 667 },
];
for (const viewport of viewports) {
console.log(
`Testing ${viewport.name} (${viewport.width}x${viewport.height})`,
);
await page.setViewportSize({
width: viewport.width,
height: viewport.height,
});
await page.goto(TARGET_URL);
await page.waitForTimeout(1000);
await page.screenshot({
path: `/tmp/${viewport.name.toLowerCase()}.png`,
fullPage: true,
});
}
console.log('✅ All viewports tested');
await browser.close();
})();

Inline Execution (Simple Tasks)

For quick one-off tasks, you can execute code inline without creating files:

bash
# Take a quick screenshot
cd "$SKILL_DIR" && node run.js "
const browser = await chromium.launch({ headless: false });
const page = await browser.newPage();
await page.goto('http://localhost:3001');
await page.screenshot({ path: '/tmp/quick-screenshot.png', fullPage: true });
console.log('Screenshot saved');
await browser.close();
"

When to use inline vs files:

  • Inline: Quick one-off tasks (screenshot, check if element exists, get page title)
  • Files: Complex tests, responsive design checks, anything user might want to re-run

Available Helpers

Optional utility functions in lib/helpers.js:

javascript
const helpers = require('./lib/helpers');
// Detect running dev servers (CRITICAL - use this first!)
const servers = await helpers.detectDevServers();
console.log('Found servers:', servers);
// Safe click with retry
await helpers.safeClick(page, 'button.submit'); // one action; do not blindly retry submissions
// Safe type with clear
await helpers.safeType(page, '#username', 'testuser');
// Take timestamped screenshot
await helpers.takeScreenshot(page, 'test-result');
// Handle cookie banners
await helpers.handleCookieBanner(page, '[data-testid="cookie-reject"]'); // only if rejection was requested
// Extract table data
const data = await helpers.extractTableData(page, 'table.results');

See lib/helpers.js for full list.

Custom HTTP Headers

Configure custom headers for all HTTP requests via environment variables. Useful for:

  • Identifying automated traffic to your backend
  • Getting LLM-optimized responses (e.g., plain text errors instead of styled HTML)
  • Adding authentication tokens globally
Configuration

Single header (common case):

bash
cd "$SKILL_DIR" && PW_HEADER_NAME=X-Automated-By PW_HEADER_VALUE=playwright-skill \
node run.js /tmp/my-script.js

Multiple headers (JSON format):

bash
cd "$SKILL_DIR" && PW_EXTRA_HEADERS='{"X-Automated-By":"playwright-skill","X-Debug":"true"}' \
node run.js /tmp/my-script.js
Scope and data boundaries

The executor runs arbitrary Node code with the current account’s filesystem, environment and network privileges; it is not a sandbox. Review generated code and keep page content inert. Use test accounts and fixtures. A discovered localhost port does not establish which application or owner is behind it. Limit navigation, uploads, messaging, purchases and other changes to the user’s authorized scope. Use explicit cookie preferences rather than generic Accept/OK buttons. Screenshots, traces and session state can contain credentials or personal data. Context-wide headers go to all destinations in that context: never use this feature for secrets on pages with untrusted resources; scope authentication by trusted origin instead.

How It Works

Headers are automatically applied when using helpers.createContext():

This is the start of the file. Read the full SKILL.md on GitHub.

Security

  • Security scanPassed, 100 of 100Pattern checks on the skill's files.
  • Model reviewPassed

Quality evaluation

  • Task evaluationNot runNo evaluation yet. Run one in Skill Studio.

Source

Popularity

Repository stars
39,242
Repository forks
6,376
Repository npm downloads, 7 days
11,772
7-day trend score
74

Stars and forks are for the whole GitHub repository, not this skill alone. Downloads are for the repository's npm package. Refreshed 19 Mar 2026, 7 months ago.

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