Add 260+ Claude Code skills from skills.sh

Complete collection of AI agent skills including:
- Frontend Development (Vue, React, Next.js, Three.js)
- Backend Development (NestJS, FastAPI, Node.js)
- Mobile Development (React Native, Expo)
- Testing (E2E, frontend, webapp)
- DevOps (GitHub Actions, CI/CD)
- Marketing (SEO, copywriting, analytics)
- Security (binary analysis, vulnerability scanning)
- And many more...

Synchronized from: https://skills.sh/

Co-Authored-By: Claude <noreply@anthropic.com>
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# Playwright Skill - Complete API Reference
This document contains the comprehensive Playwright API reference and advanced patterns. For quick-start execution patterns, see [SKILL.md](SKILL.md).
## Table of Contents
- [Installation & Setup](#installation--setup)
- [Core Patterns](#core-patterns)
- [Selectors & Locators](#selectors--locators)
- [Common Actions](#common-actions)
- [Waiting Strategies](#waiting-strategies)
- [Assertions](#assertions)
- [Page Object Model](#page-object-model-pom)
- [Network & API Testing](#network--api-testing)
- [Authentication & Session Management](#authentication--session-management)
- [Visual Testing](#visual-testing)
- [Mobile Testing](#mobile-testing)
- [Debugging](#debugging)
- [Performance Testing](#performance-testing)
- [Parallel Execution](#parallel-execution)
- [Data-Driven Testing](#data-driven-testing)
- [Accessibility Testing](#accessibility-testing)
- [CI/CD Integration](#cicd-integration)
- [Best Practices](#best-practices)
- [Common Patterns & Solutions](#common-patterns--solutions)
- [Troubleshooting](#troubleshooting)
## Installation & Setup
### Prerequisites
Before using this skill, ensure Playwright is available:
```bash
# Check if Playwright is installed
npm list playwright 2>/dev/null || echo "Playwright not installed"
# Install (if needed)
cd ~/.claude/skills/playwright-skill
npm run setup
```
### Basic Configuration
Create `playwright.config.ts`:
```typescript
import { defineConfig, devices } from '@playwright/test';
export default defineConfig({
testDir: './tests',
fullyParallel: true,
forbidOnly: !!process.env.CI,
retries: process.env.CI ? 2 : 0,
workers: process.env.CI ? 1 : undefined,
reporter: 'html',
use: {
baseURL: 'http://localhost:3000',
trace: 'on-first-retry',
screenshot: 'only-on-failure',
video: 'retain-on-failure',
},
projects: [
{
name: 'chromium',
use: { ...devices['Desktop Chrome'] },
},
],
webServer: {
command: 'npm run start',
url: 'http://localhost:3000',
reuseExistingServer: !process.env.CI,
},
});
```
## Core Patterns
### Basic Browser Automation
```javascript
const { chromium } = require('playwright');
(async () => {
// Launch browser
const browser = await chromium.launch({
headless: false, // Set to true for headless mode
slowMo: 50 // Slow down operations by 50ms
});
const context = await browser.newContext({
viewport: { width: 1280, height: 720 },
userAgent: 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36'
});
const page = await context.newPage();
// Navigate
await page.goto('https://example.com', {
waitUntil: 'networkidle' // Wait for network to be idle
});
// Your automation here
await browser.close();
})();
```
### Test Structure
```typescript
import { test, expect } from '@playwright/test';
test.describe('Feature Name', () => {
test.beforeEach(async ({ page }) => {
await page.goto('/');
});
test('should do something', async ({ page }) => {
// Arrange
const button = page.locator('button[data-testid="submit"]');
// Act
await button.click();
// Assert
await expect(page).toHaveURL('/success');
await expect(page.locator('.message')).toHaveText('Success!');
});
});
```
## Selectors & Locators
### Best Practices for Selectors
```javascript
// PREFERRED: Data attributes (most stable)
await page.locator('[data-testid="submit-button"]').click();
await page.locator('[data-cy="user-input"]').fill('text');
// GOOD: Role-based selectors (accessible)
await page.getByRole('button', { name: 'Submit' }).click();
await page.getByRole('textbox', { name: 'Email' }).fill('user@example.com');
await page.getByRole('heading', { level: 1 }).click();
// GOOD: Text content (for unique text)
await page.getByText('Sign in').click();
await page.getByText(/welcome back/i).click();
// OK: Semantic HTML
await page.locator('button[type="submit"]').click();
await page.locator('input[name="email"]').fill('test@test.com');
// AVOID: Classes and IDs (can change frequently)
await page.locator('.btn-primary').click(); // Avoid
await page.locator('#submit').click(); // Avoid
// LAST RESORT: Complex CSS/XPath
await page.locator('div.container > form > button').click(); // Fragile
```
### Advanced Locator Patterns
```javascript
// Filter and chain locators
const row = page.locator('tr').filter({ hasText: 'John Doe' });
await row.locator('button').click();
// Nth element
await page.locator('button').nth(2).click();
// Combining conditions
await page.locator('button').and(page.locator('[disabled]')).count();
// Parent/child navigation
const cell = page.locator('td').filter({ hasText: 'Active' });
const row = cell.locator('..');
await row.locator('button.edit').click();
```
## Common Actions
### Form Interactions
```javascript
// Text input
await page.getByLabel('Email').fill('user@example.com');
await page.getByPlaceholder('Enter your name').fill('John Doe');
// Clear and type
await page.locator('#username').clear();
await page.locator('#username').type('newuser', { delay: 100 });
// Checkbox
await page.getByLabel('I agree').check();
await page.getByLabel('Subscribe').uncheck();
// Radio button
await page.getByLabel('Option 2').check();
// Select dropdown
await page.selectOption('select#country', 'usa');
await page.selectOption('select#country', { label: 'United States' });
await page.selectOption('select#country', { index: 2 });
// Multi-select
await page.selectOption('select#colors', ['red', 'blue', 'green']);
// File upload
await page.setInputFiles('input[type="file"]', 'path/to/file.pdf');
await page.setInputFiles('input[type="file"]', [
'file1.pdf',
'file2.pdf'
]);
```
### Mouse Actions
```javascript
// Click variations
await page.click('button'); // Left click
await page.click('button', { button: 'right' }); // Right click
await page.dblclick('button'); // Double click
await page.click('button', { position: { x: 10, y: 10 } }); // Click at position
// Hover
await page.hover('.menu-item');
// Drag and drop
await page.dragAndDrop('#source', '#target');
// Manual drag
await page.locator('#source').hover();
await page.mouse.down();
await page.locator('#target').hover();
await page.mouse.up();
```
### Keyboard Actions
```javascript
// Type with delay
await page.keyboard.type('Hello World', { delay: 100 });
// Key combinations
await page.keyboard.press('Control+A');
await page.keyboard.press('Control+C');
await page.keyboard.press('Control+V');
// Special keys
await page.keyboard.press('Enter');
await page.keyboard.press('Tab');
await page.keyboard.press('Escape');
await page.keyboard.press('ArrowDown');
```
## Waiting Strategies
### Smart Waiting
```javascript
// Wait for element states
await page.locator('button').waitFor({ state: 'visible' });
await page.locator('.spinner').waitFor({ state: 'hidden' });
await page.locator('button').waitFor({ state: 'attached' });
await page.locator('button').waitFor({ state: 'detached' });
// Wait for specific conditions
await page.waitForURL('**/success');
await page.waitForURL(url => url.pathname === '/dashboard');
// Wait for network
await page.waitForLoadState('networkidle');
await page.waitForLoadState('domcontentloaded');
// Wait for function
await page.waitForFunction(() => document.querySelector('.loaded'));
await page.waitForFunction(
text => document.body.innerText.includes(text),
'Content loaded'
);
// Wait for response
const responsePromise = page.waitForResponse('**/api/users');
await page.click('button#load-users');
const response = await responsePromise;
// Wait for request
await page.waitForRequest(request =>
request.url().includes('/api/') && request.method() === 'POST'
);
// Custom timeout
await page.locator('.slow-element').waitFor({
state: 'visible',
timeout: 10000 // 10 seconds
});
```
## Assertions
### Common Assertions
```javascript
import { expect } from '@playwright/test';
// Page assertions
await expect(page).toHaveTitle('My App');
await expect(page).toHaveURL('https://example.com/dashboard');
await expect(page).toHaveURL(/.*dashboard/);
// Element visibility
await expect(page.locator('.message')).toBeVisible();
await expect(page.locator('.spinner')).toBeHidden();
await expect(page.locator('button')).toBeEnabled();
await expect(page.locator('input')).toBeDisabled();
// Text content
await expect(page.locator('h1')).toHaveText('Welcome');
await expect(page.locator('.message')).toContainText('success');
await expect(page.locator('.items')).toHaveText(['Item 1', 'Item 2']);
// Input values
await expect(page.locator('input')).toHaveValue('test@example.com');
await expect(page.locator('input')).toBeEmpty();
// Attributes
await expect(page.locator('button')).toHaveAttribute('type', 'submit');
await expect(page.locator('img')).toHaveAttribute('src', /.*\.png/);
// CSS properties
await expect(page.locator('.error')).toHaveCSS('color', 'rgb(255, 0, 0)');
// Count
await expect(page.locator('.item')).toHaveCount(5);
// Checkbox/Radio state
await expect(page.locator('input[type="checkbox"]')).toBeChecked();
```
## Page Object Model (POM)
### Basic Page Object
```javascript
// pages/LoginPage.js
class LoginPage {
constructor(page) {
this.page = page;
this.usernameInput = page.locator('input[name="username"]');
this.passwordInput = page.locator('input[name="password"]');
this.submitButton = page.locator('button[type="submit"]');
this.errorMessage = page.locator('.error-message');
}
async navigate() {
await this.page.goto('/login');
}
async login(username, password) {
await this.usernameInput.fill(username);
await this.passwordInput.fill(password);
await this.submitButton.click();
}
async getErrorMessage() {
return await this.errorMessage.textContent();
}
}
// Usage in test
test('login with valid credentials', async ({ page }) => {
const loginPage = new LoginPage(page);
await loginPage.navigate();
await loginPage.login('user@example.com', 'password123');
await expect(page).toHaveURL('/dashboard');
});
```
## Network & API Testing
### Intercepting Requests
```javascript
// Mock API responses
await page.route('**/api/users', route => {
route.fulfill({
status: 200,
contentType: 'application/json',
body: JSON.stringify([
{ id: 1, name: 'John' },
{ id: 2, name: 'Jane' }
])
});
});
// Modify requests
await page.route('**/api/**', route => {
const headers = {
...route.request().headers(),
'X-Custom-Header': 'value'
};
route.continue({ headers });
});
// Block resources
await page.route('**/*.{png,jpg,jpeg,gif}', route => route.abort());
```
### Custom Headers via Environment Variables
The skill supports automatic header injection via environment variables:
```bash
# Single header (simple)
PW_HEADER_NAME=X-Automated-By PW_HEADER_VALUE=playwright-skill
# Multiple headers (JSON)
PW_EXTRA_HEADERS='{"X-Automated-By":"playwright-skill","X-Request-ID":"123"}'
```
These headers are automatically applied to all requests when using:
- `helpers.createContext(browser)` - headers merged automatically
- `getContextOptionsWithHeaders(options)` - utility injected by run.js wrapper
**Precedence (highest to lowest):**
1. Headers passed directly in `options.extraHTTPHeaders`
2. Environment variable headers
3. Playwright defaults
**Use case:** Identify automated traffic so your backend can return LLM-optimized responses (e.g., plain text errors instead of styled HTML).
## Visual Testing
### Screenshots
```javascript
// Full page screenshot
await page.screenshot({
path: 'screenshot.png',
fullPage: true
});
// Element screenshot
await page.locator('.chart').screenshot({
path: 'chart.png'
});
// Visual comparison
await expect(page).toHaveScreenshot('homepage.png');
```
## Mobile Testing
```javascript
// Device emulation
const { devices } = require('playwright');
const iPhone = devices['iPhone 12'];
const context = await browser.newContext({
...iPhone,
locale: 'en-US',
permissions: ['geolocation'],
geolocation: { latitude: 37.7749, longitude: -122.4194 }
});
```
## Debugging
### Debug Mode
```bash
# Run with inspector
npx playwright test --debug
# Headed mode
npx playwright test --headed
# Slow motion
npx playwright test --headed --slowmo=1000
```
### In-Code Debugging
```javascript
// Pause execution
await page.pause();
// Console logs
page.on('console', msg => console.log('Browser log:', msg.text()));
page.on('pageerror', error => console.log('Page error:', error));
```
## Performance Testing
```javascript
// Measure page load time
const startTime = Date.now();
await page.goto('https://example.com');
const loadTime = Date.now() - startTime;
console.log(`Page loaded in ${loadTime}ms`);
```
## Parallel Execution
```javascript
// Run tests in parallel
test.describe.parallel('Parallel suite', () => {
test('test 1', async ({ page }) => {
// Runs in parallel with test 2
});
test('test 2', async ({ page }) => {
// Runs in parallel with test 1
});
});
```
## Data-Driven Testing
```javascript
// Parameterized tests
const testData = [
{ username: 'user1', password: 'pass1', expected: 'Welcome user1' },
{ username: 'user2', password: 'pass2', expected: 'Welcome user2' },
];
testData.forEach(({ username, password, expected }) => {
test(`login with ${username}`, async ({ page }) => {
await page.goto('/login');
await page.fill('#username', username);
await page.fill('#password', password);
await page.click('button[type="submit"]');
await expect(page.locator('.message')).toHaveText(expected);
});
});
```
## Accessibility Testing
```javascript
import { injectAxe, checkA11y } from 'axe-playwright';
test('accessibility check', async ({ page }) => {
await page.goto('/');
await injectAxe(page);
await checkA11y(page);
});
```
## CI/CD Integration
### GitHub Actions
```yaml
name: Playwright Tests
on:
push:
branches: [main, master]
jobs:
test:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- uses: actions/setup-node@v3
- name: Install dependencies
run: npm ci
- name: Install Playwright Browsers
run: npx playwright install --with-deps
- name: Run tests
run: npx playwright test
```
## Best Practices
1. **Test Organization** - Use descriptive test names, group related tests
2. **Selector Strategy** - Prefer data-testid attributes, use role-based selectors
3. **Waiting** - Use Playwright's auto-waiting, avoid hard-coded delays
4. **Error Handling** - Add proper error messages, take screenshots on failure
5. **Performance** - Run tests in parallel, reuse authentication state
## Common Patterns & Solutions
### Handling Popups
```javascript
const [popup] = await Promise.all([
page.waitForEvent('popup'),
page.click('button.open-popup')
]);
await popup.waitForLoadState();
```
### File Downloads
```javascript
const [download] = await Promise.all([
page.waitForEvent('download'),
page.click('button.download')
]);
await download.saveAs(`./downloads/${download.suggestedFilename()}`);
```
### iFrames
```javascript
const frame = page.frameLocator('#my-iframe');
await frame.locator('button').click();
```
### Infinite Scroll
```javascript
async function scrollToBottom(page) {
await page.evaluate(() => window.scrollTo(0, document.body.scrollHeight));
await page.waitForTimeout(500);
}
```
## Troubleshooting
### Common Issues
1. **Element not found** - Check if element is in iframe, verify visibility
2. **Timeout errors** - Increase timeout, check network conditions
3. **Flaky tests** - Use proper waiting strategies, mock external dependencies
4. **Authentication issues** - Verify auth state is properly saved
## Quick Reference Commands
```bash
# Run tests
npx playwright test
# Run in headed mode
npx playwright test --headed
# Debug tests
npx playwright test --debug
# Generate code
npx playwright codegen https://example.com
# Show report
npx playwright show-report
```
## Additional Resources
- [Playwright Documentation](https://playwright.dev/docs/intro)
- [API Reference](https://playwright.dev/docs/api/class-playwright)
- [Best Practices](https://playwright.dev/docs/best-practices)

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---
name: playwright-skill
description: 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.
---
**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
2. **Write scripts to /tmp** - NEVER write test files to skill directory; always use `/tmp/playwright-test-*.js`
3. **Use visible browser by default** - Always use `headless: false` unless user specifically requests headless mode
4. **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.
## 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
PW_HEADER_NAME=X-Automated-By PW_HEADER_VALUE=playwright-skill \
cd $SKILL_DIR && node run.js /tmp/my-script.js
```
**Multiple headers (JSON format):**
```bash
PW_EXTRA_HEADERS='{"X-Automated-By":"playwright-skill","X-Debug":"true"}' \
cd $SKILL_DIR && node run.js /tmp/my-script.js
```
### How It Works
Headers are automatically applied when using `helpers.createContext()`:
```javascript
const context = await helpers.createContext(browser);
const page = await context.newPage();
// All requests from this page include your custom headers
```
For scripts using raw Playwright API, use the injected `getContextOptionsWithHeaders()`:
```javascript
const context = await browser.newContext(
getContextOptionsWithHeaders({ viewport: { width: 1920, height: 1080 } }),
);
```
## Advanced Usage
For comprehensive Playwright API documentation, see [API_REFERENCE.md](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
- **Custom headers** - Use `PW_HEADER_NAME`/`PW_HEADER_VALUE` env vars to identify automated traffic to your backend
- **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
- Each automation is custom-written for your specific request
- Not limited to pre-built scripts - any browser task possible
- Auto-detects running dev servers to eliminate hardcoded URLs
- Test scripts written to `/tmp` for automatic cleanup (no clutter)
- Code executes reliably with proper module resolution via `run.js`
- Progressive disclosure - API_REFERENCE.md loaded only when advanced features needed

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// playwright-helpers.js
// Reusable utility functions for Playwright automation
const { chromium, firefox, webkit } = require('playwright');
/**
* Parse extra HTTP headers from environment variables.
* Supports two formats:
* - PW_HEADER_NAME + PW_HEADER_VALUE: Single header (simple, common case)
* - PW_EXTRA_HEADERS: JSON object for multiple headers (advanced)
* Single header format takes precedence if both are set.
* @returns {Object|null} Headers object or null if none configured
*/
function getExtraHeadersFromEnv() {
const headerName = process.env.PW_HEADER_NAME;
const headerValue = process.env.PW_HEADER_VALUE;
if (headerName && headerValue) {
return { [headerName]: headerValue };
}
const headersJson = process.env.PW_EXTRA_HEADERS;
if (headersJson) {
try {
const parsed = JSON.parse(headersJson);
if (typeof parsed === 'object' && parsed !== null && !Array.isArray(parsed)) {
return parsed;
}
console.warn('PW_EXTRA_HEADERS must be a JSON object, ignoring...');
} catch (e) {
console.warn('Failed to parse PW_EXTRA_HEADERS as JSON:', e.message);
}
}
return null;
}
/**
* Launch browser with standard configuration
* @param {string} browserType - 'chromium', 'firefox', or 'webkit'
* @param {Object} options - Additional launch options
*/
async function launchBrowser(browserType = 'chromium', options = {}) {
const defaultOptions = {
headless: process.env.HEADLESS !== 'false',
slowMo: process.env.SLOW_MO ? parseInt(process.env.SLOW_MO) : 0,
args: ['--no-sandbox', '--disable-setuid-sandbox']
};
const browsers = { chromium, firefox, webkit };
const browser = browsers[browserType];
if (!browser) {
throw new Error(`Invalid browser type: ${browserType}`);
}
return await browser.launch({ ...defaultOptions, ...options });
}
/**
* Create a new page with viewport and user agent
* @param {Object} context - Browser context
* @param {Object} options - Page options
*/
async function createPage(context, options = {}) {
const page = await context.newPage();
if (options.viewport) {
await page.setViewportSize(options.viewport);
}
if (options.userAgent) {
await page.setExtraHTTPHeaders({
'User-Agent': options.userAgent
});
}
// Set default timeout
page.setDefaultTimeout(options.timeout || 30000);
return page;
}
/**
* Smart wait for page to be ready
* @param {Object} page - Playwright page
* @param {Object} options - Wait options
*/
async function waitForPageReady(page, options = {}) {
const waitOptions = {
waitUntil: options.waitUntil || 'networkidle',
timeout: options.timeout || 30000
};
try {
await page.waitForLoadState(waitOptions.waitUntil, {
timeout: waitOptions.timeout
});
} catch (e) {
console.warn('Page load timeout, continuing...');
}
// Additional wait for dynamic content if selector provided
if (options.waitForSelector) {
await page.waitForSelector(options.waitForSelector, {
timeout: options.timeout
});
}
}
/**
* Safe click with retry logic
* @param {Object} page - Playwright page
* @param {string} selector - Element selector
* @param {Object} options - Click options
*/
async function safeClick(page, selector, options = {}) {
const maxRetries = options.retries || 3;
const retryDelay = options.retryDelay || 1000;
for (let i = 0; i < maxRetries; i++) {
try {
await page.waitForSelector(selector, {
state: 'visible',
timeout: options.timeout || 5000
});
await page.click(selector, {
force: options.force || false,
timeout: options.timeout || 5000
});
return true;
} catch (e) {
if (i === maxRetries - 1) {
console.error(`Failed to click ${selector} after ${maxRetries} attempts`);
throw e;
}
console.log(`Retry ${i + 1}/${maxRetries} for clicking ${selector}`);
await page.waitForTimeout(retryDelay);
}
}
}
/**
* Safe text input with clear before type
* @param {Object} page - Playwright page
* @param {string} selector - Input selector
* @param {string} text - Text to type
* @param {Object} options - Type options
*/
async function safeType(page, selector, text, options = {}) {
await page.waitForSelector(selector, {
state: 'visible',
timeout: options.timeout || 10000
});
if (options.clear !== false) {
await page.fill(selector, '');
}
if (options.slow) {
await page.type(selector, text, { delay: options.delay || 100 });
} else {
await page.fill(selector, text);
}
}
/**
* Extract text from multiple elements
* @param {Object} page - Playwright page
* @param {string} selector - Elements selector
*/
async function extractTexts(page, selector) {
await page.waitForSelector(selector, { timeout: 10000 });
return await page.$$eval(selector, elements =>
elements.map(el => el.textContent?.trim()).filter(Boolean)
);
}
/**
* Take screenshot with timestamp
* @param {Object} page - Playwright page
* @param {string} name - Screenshot name
* @param {Object} options - Screenshot options
*/
async function takeScreenshot(page, name, options = {}) {
const timestamp = new Date().toISOString().replace(/[:.]/g, '-');
const filename = `${name}-${timestamp}.png`;
await page.screenshot({
path: filename,
fullPage: options.fullPage !== false,
...options
});
console.log(`Screenshot saved: ${filename}`);
return filename;
}
/**
* Handle authentication
* @param {Object} page - Playwright page
* @param {Object} credentials - Username and password
* @param {Object} selectors - Login form selectors
*/
async function authenticate(page, credentials, selectors = {}) {
const defaultSelectors = {
username: 'input[name="username"], input[name="email"], #username, #email',
password: 'input[name="password"], #password',
submit: 'button[type="submit"], input[type="submit"], button:has-text("Login"), button:has-text("Sign in")'
};
const finalSelectors = { ...defaultSelectors, ...selectors };
await safeType(page, finalSelectors.username, credentials.username);
await safeType(page, finalSelectors.password, credentials.password);
await safeClick(page, finalSelectors.submit);
// Wait for navigation or success indicator
await Promise.race([
page.waitForNavigation({ waitUntil: 'networkidle' }),
page.waitForSelector(selectors.successIndicator || '.dashboard, .user-menu, .logout', { timeout: 10000 })
]).catch(() => {
console.log('Login might have completed without navigation');
});
}
/**
* Scroll page
* @param {Object} page - Playwright page
* @param {string} direction - 'down', 'up', 'top', 'bottom'
* @param {number} distance - Pixels to scroll (for up/down)
*/
async function scrollPage(page, direction = 'down', distance = 500) {
switch (direction) {
case 'down':
await page.evaluate(d => window.scrollBy(0, d), distance);
break;
case 'up':
await page.evaluate(d => window.scrollBy(0, -d), distance);
break;
case 'top':
await page.evaluate(() => window.scrollTo(0, 0));
break;
case 'bottom':
await page.evaluate(() => window.scrollTo(0, document.body.scrollHeight));
break;
}
await page.waitForTimeout(500); // Wait for scroll animation
}
/**
* Extract table data
* @param {Object} page - Playwright page
* @param {string} tableSelector - Table selector
*/
async function extractTableData(page, tableSelector) {
await page.waitForSelector(tableSelector);
return await page.evaluate((selector) => {
const table = document.querySelector(selector);
if (!table) return null;
const headers = Array.from(table.querySelectorAll('thead th')).map(th =>
th.textContent?.trim()
);
const rows = Array.from(table.querySelectorAll('tbody tr')).map(tr => {
const cells = Array.from(tr.querySelectorAll('td'));
if (headers.length > 0) {
return cells.reduce((obj, cell, index) => {
obj[headers[index] || `column_${index}`] = cell.textContent?.trim();
return obj;
}, {});
} else {
return cells.map(cell => cell.textContent?.trim());
}
});
return { headers, rows };
}, tableSelector);
}
/**
* Wait for and dismiss cookie banners
* @param {Object} page - Playwright page
* @param {number} timeout - Max time to wait
*/
async function handleCookieBanner(page, timeout = 3000) {
const commonSelectors = [
'button:has-text("Accept")',
'button:has-text("Accept all")',
'button:has-text("OK")',
'button:has-text("Got it")',
'button:has-text("I agree")',
'.cookie-accept',
'#cookie-accept',
'[data-testid="cookie-accept"]'
];
for (const selector of commonSelectors) {
try {
const element = await page.waitForSelector(selector, {
timeout: timeout / commonSelectors.length,
state: 'visible'
});
if (element) {
await element.click();
console.log('Cookie banner dismissed');
return true;
}
} catch (e) {
// Continue to next selector
}
}
return false;
}
/**
* Retry a function with exponential backoff
* @param {Function} fn - Function to retry
* @param {number} maxRetries - Maximum retry attempts
* @param {number} initialDelay - Initial delay in ms
*/
async function retryWithBackoff(fn, maxRetries = 3, initialDelay = 1000) {
let lastError;
for (let i = 0; i < maxRetries; i++) {
try {
return await fn();
} catch (error) {
lastError = error;
const delay = initialDelay * Math.pow(2, i);
console.log(`Attempt ${i + 1} failed, retrying in ${delay}ms...`);
await new Promise(resolve => setTimeout(resolve, delay));
}
}
throw lastError;
}
/**
* Create browser context with common settings
* @param {Object} browser - Browser instance
* @param {Object} options - Context options
*/
async function createContext(browser, options = {}) {
const envHeaders = getExtraHeadersFromEnv();
// Merge environment headers with any passed in options
const mergedHeaders = {
...envHeaders,
...options.extraHTTPHeaders
};
const defaultOptions = {
viewport: { width: 1280, height: 720 },
userAgent: options.mobile
? 'Mozilla/5.0 (iPhone; CPU iPhone OS 14_7_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.2 Mobile/15E148 Safari/604.1'
: undefined,
permissions: options.permissions || [],
geolocation: options.geolocation,
locale: options.locale || 'en-US',
timezoneId: options.timezoneId || 'America/New_York',
// Only include extraHTTPHeaders if we have any
...(Object.keys(mergedHeaders).length > 0 && { extraHTTPHeaders: mergedHeaders })
};
return await browser.newContext({ ...defaultOptions, ...options });
}
/**
* Detect running dev servers on common ports
* @param {Array<number>} customPorts - Additional ports to check
* @returns {Promise<Array>} Array of detected server URLs
*/
async function detectDevServers(customPorts = []) {
const http = require('http');
// Common dev server ports
const commonPorts = [3000, 3001, 3002, 5173, 8080, 8000, 4200, 5000, 9000, 1234];
const allPorts = [...new Set([...commonPorts, ...customPorts])];
const detectedServers = [];
console.log('🔍 Checking for running dev servers...');
for (const port of allPorts) {
try {
await new Promise((resolve, reject) => {
const req = http.request({
hostname: 'localhost',
port: port,
path: '/',
method: 'HEAD',
timeout: 500
}, (res) => {
if (res.statusCode < 500) {
detectedServers.push(`http://localhost:${port}`);
console.log(` ✅ Found server on port ${port}`);
}
resolve();
});
req.on('error', () => resolve());
req.on('timeout', () => {
req.destroy();
resolve();
});
req.end();
});
} catch (e) {
// Port not available, continue
}
}
if (detectedServers.length === 0) {
console.log(' ❌ No dev servers detected');
}
return detectedServers;
}
module.exports = {
launchBrowser,
createPage,
waitForPageReady,
safeClick,
safeType,
extractTexts,
takeScreenshot,
authenticate,
scrollPage,
extractTableData,
handleCookieBanner,
retryWithBackoff,
createContext,
detectDevServers,
getExtraHeadersFromEnv
};

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{
"name": "playwright-skill",
"version": "4.1.0",
"description": "General-purpose browser automation with Playwright for Claude Code with auto-detection and smart test management",
"author": "lackeyjb",
"main": "run.js",
"scripts": {
"setup": "npm install && npx playwright install chromium",
"install-all-browsers": "npx playwright install chromium firefox webkit"
},
"keywords": [
"playwright",
"automation",
"browser-testing",
"web-automation",
"claude-skill",
"general-purpose"
],
"dependencies": {
"playwright": "^1.57.0"
},
"engines": {
"node": ">=14.0.0"
},
"license": "MIT"
}

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#!/usr/bin/env node
/**
* Universal Playwright Executor for Claude Code
*
* Executes Playwright automation code from:
* - File path: node run.js script.js
* - Inline code: node run.js 'await page.goto("...")'
* - Stdin: cat script.js | node run.js
*
* Ensures proper module resolution by running from skill directory.
*/
const fs = require('fs');
const path = require('path');
const { execSync } = require('child_process');
// Change to skill directory for proper module resolution
process.chdir(__dirname);
/**
* Check if Playwright is installed
*/
function checkPlaywrightInstalled() {
try {
require.resolve('playwright');
return true;
} catch (e) {
return false;
}
}
/**
* Install Playwright if missing
*/
function installPlaywright() {
console.log('📦 Playwright not found. Installing...');
try {
execSync('npm install', { stdio: 'inherit', cwd: __dirname });
execSync('npx playwright install chromium', { stdio: 'inherit', cwd: __dirname });
console.log('✅ Playwright installed successfully');
return true;
} catch (e) {
console.error('❌ Failed to install Playwright:', e.message);
console.error('Please run manually: cd', __dirname, '&& npm run setup');
return false;
}
}
/**
* Get code to execute from various sources
*/
function getCodeToExecute() {
const args = process.argv.slice(2);
// Case 1: File path provided
if (args.length > 0 && fs.existsSync(args[0])) {
const filePath = path.resolve(args[0]);
console.log(`📄 Executing file: ${filePath}`);
return fs.readFileSync(filePath, 'utf8');
}
// Case 2: Inline code provided as argument
if (args.length > 0) {
console.log('⚡ Executing inline code');
return args.join(' ');
}
// Case 3: Code from stdin
if (!process.stdin.isTTY) {
console.log('📥 Reading from stdin');
return fs.readFileSync(0, 'utf8');
}
// No input
console.error('❌ No code to execute');
console.error('Usage:');
console.error(' node run.js script.js # Execute file');
console.error(' node run.js "code here" # Execute inline');
console.error(' cat script.js | node run.js # Execute from stdin');
process.exit(1);
}
/**
* Clean up old temporary execution files from previous runs
*/
function cleanupOldTempFiles() {
try {
const files = fs.readdirSync(__dirname);
const tempFiles = files.filter(f => f.startsWith('.temp-execution-') && f.endsWith('.js'));
if (tempFiles.length > 0) {
tempFiles.forEach(file => {
const filePath = path.join(__dirname, file);
try {
fs.unlinkSync(filePath);
} catch (e) {
// Ignore errors - file might be in use or already deleted
}
});
}
} catch (e) {
// Ignore directory read errors
}
}
/**
* Wrap code in async IIFE if not already wrapped
*/
function wrapCodeIfNeeded(code) {
// Check if code already has require() and async structure
const hasRequire = code.includes('require(');
const hasAsyncIIFE = code.includes('(async () => {') || code.includes('(async()=>{');
// If it's already a complete script, return as-is
if (hasRequire && hasAsyncIIFE) {
return code;
}
// If it's just Playwright commands, wrap in full template
if (!hasRequire) {
return `
const { chromium, firefox, webkit, devices } = require('playwright');
const helpers = require('./lib/helpers');
// Extra headers from environment variables (if configured)
const __extraHeaders = helpers.getExtraHeadersFromEnv();
/**
* Utility to merge environment headers into context options.
* Use when creating contexts with raw Playwright API instead of helpers.createContext().
* @param {Object} options - Context options
* @returns {Object} Options with extraHTTPHeaders merged in
*/
function getContextOptionsWithHeaders(options = {}) {
if (!__extraHeaders) return options;
return {
...options,
extraHTTPHeaders: {
...__extraHeaders,
...(options.extraHTTPHeaders || {})
}
};
}
(async () => {
try {
${code}
} catch (error) {
console.error('❌ Automation error:', error.message);
if (error.stack) {
console.error(error.stack);
}
process.exit(1);
}
})();
`;
}
// If has require but no async wrapper
if (!hasAsyncIIFE) {
return `
(async () => {
try {
${code}
} catch (error) {
console.error('❌ Automation error:', error.message);
if (error.stack) {
console.error(error.stack);
}
process.exit(1);
}
})();
`;
}
return code;
}
/**
* Main execution
*/
async function main() {
console.log('🎭 Playwright Skill - Universal Executor\n');
// Clean up old temp files from previous runs
cleanupOldTempFiles();
// Check Playwright installation
if (!checkPlaywrightInstalled()) {
const installed = installPlaywright();
if (!installed) {
process.exit(1);
}
}
// Get code to execute
const rawCode = getCodeToExecute();
const code = wrapCodeIfNeeded(rawCode);
// Create temporary file for execution
const tempFile = path.join(__dirname, `.temp-execution-${Date.now()}.js`);
try {
// Write code to temp file
fs.writeFileSync(tempFile, code, 'utf8');
// Execute the code
console.log('🚀 Starting automation...\n');
require(tempFile);
// Note: Temp file will be cleaned up on next run
// This allows long-running async operations to complete safely
} catch (error) {
console.error('❌ Execution failed:', error.message);
if (error.stack) {
console.error('\n📋 Stack trace:');
console.error(error.stack);
}
process.exit(1);
}
}
// Run main function
main().catch(error => {
console.error('❌ Fatal error:', error.message);
process.exit(1);
});