ovachiever/droid-tings/playwright-skill

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Complete browser automation with Playwright. Auto-detects dev servers, writes clean test scripts to /tmp. Test pages, fill forms, take screenshots, check responsive design, validate UX, test login flows, check links, automate any browser task. Use when user wants to test websites, automate browser interactions, validate web functionality, or perform any browser-based testing.

Install

npx vskill@latest install ovachiever/droid-tings/playwright-skill

SKILL.md

The same SKILL.md was published earlier as microck/ordinary-claude-skills/playwright-skill.

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: ~/.claude/plugins/marketplaces/playwright-skill/skills/playwright-skill
  • Manual global: ~/.claude/skills/playwright-skill
  • Project-specific: <project>/.claude/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

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. Test files auto-cleaned from /tmp by your OS

Setup (First Time)

bash
cd $SKILL_DIR
npm run setup

This installs Playwright and Chromium browser. Only needed once.

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: 'networkidle',
      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', { retries: 3 });
// 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);
// Extract table data
const data = await helpers.extractTableData(page, 'table.results');

See lib/helpers.js for full list.

Advanced Usage

For comprehensive Playwright API documentation, see API_REFERENCE.md:

  • Selectors & Locators best practices
  • Network interception & API mocking
  • Authentication & session management
  • Visual regression testing
  • Mobile device emulation
  • Performance testing
  • Debugging techniques
  • CI/CD integration

Tips

  • CRITICAL: Detect servers FIRST - Always run detectDevServers() before writing test code for localhost testing
  • Use /tmp for test files - Write to /tmp/playwright-test-*.js, never to skill directory or user's project
  • Parameterize URLs - Put detected/provided URL in a TARGET_URL constant at the top of every script
  • DEFAULT: Visible browser - Always use headless: false unless user explicitly asks for headless mode
  • Headless mode - Only use headless: true when user specifically requests "headless" or "background" execution
  • Slow down: Use slowMo: 100 to make actions visible and easier to follow
  • Wait strategies: Use waitForURL, waitForSelector, waitForLoadState instead of fixed timeouts
  • Error handling: Always use try-catch for robust automation
  • Console output: Use console.log() to track progress and show what's happening

Troubleshooting

Playwright not installed:

bash
cd $SKILL_DIR && npm run setup

Module not found: Ensure running from skill directory via run.js wrapper

Browser doesn't open: Check headless: false and ensure display available

Element not found: Add wait: await page.waitForSelector('.element', { timeout: 10000 })

Example Usage

User: "Test if the marketing page looks good"
 
Claude: I'll test the marketing page across multiple viewports. Let me first detect running servers...
[Runs: detectDevServers()]
[Output: Found server on port 3001]
I found your dev server running on http://localhost:3001
 
[Writes custom automation script to /tmp/playwright-test-marketing.js with URL parameterized]
[Runs: cd $SKILL_DIR && node run.js /tmp/playwright-test-marketing.js]
[Shows results with screenshots from /tmp/]
User: "Check if login redirects correctly"
 
Claude: I'll test the login flow. First, let me check for running servers...
[Runs: detectDevServers()]
[Output: Found servers on ports 3000 and 3001]
I found 2 dev servers. Which one should I test?
- http://localhost:3000
- http://localhost:3001
 
User: "Use 3001"
 
[Writes login automation to /tmp/playwright-test-login.js]
[Runs: cd $SKILL_DIR && node run.js /tmp/playwright-test-login.js]
[Reports: ✅ Login successful, redirected to /dashboard]

Notes

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 reviewNot runA model review is scheduled for the next rescan.

See the full security report

Quality evaluation

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See evaluation results

Source

Popularity

Repository stars
55
Repository forks
5
7-day trend score
20

Stars and forks are for the whole GitHub repository, not this skill alone. Not refreshed yet.

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