Web Application Testing
anthropics/skills
Tests local web applications with Python Playwright scripts, checking frontend behavior, capturing screenshots and reading browser console logs.
A skill your agent uses when testing web applications with visual verification - automates Chrome browser interactions, element selection, and screenshot capture for confirming UI functionality
$ npx skills add AgentWorkforce/relay --skill browser-testing-with-screenshots -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install AgentWorkforce/relay browser-testing-with-screenshots --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/AgentWorkforce/relay.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/browser-testing-with-screenshots .claude/skills/browser-testing-with-screenshots && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "browser-testing-with-screenshots" agent skill from https://github.com/AgentWorkforce/relay/tree/main/.claude/skills/browser-testing-with-screenshots into .claude/skills/browser-testing-with-screenshots/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-testing-with-screenshots", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/AgentWorkforce/relay/tree/main/.claude/skills/browser-testing-with-screenshotsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add AgentWorkforce/relay --skill browser-testing-with-screenshots -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install AgentWorkforce/relay browser-testing-with-screenshots --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AgentWorkforce/relay.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/browser-testing-with-screenshots .agents/skills/browser-testing-with-screenshots && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "browser-testing-with-screenshots" agent skill from https://github.com/AgentWorkforce/relay/tree/main/.claude/skills/browser-testing-with-screenshots into .agents/skills/browser-testing-with-screenshots/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-testing-with-screenshots", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add AgentWorkforce/relay --skill browser-testing-with-screenshots -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install AgentWorkforce/relay browser-testing-with-screenshots --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AgentWorkforce/relay.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/browser-testing-with-screenshots .cursor/skills/browser-testing-with-screenshots && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "browser-testing-with-screenshots" agent skill from https://github.com/AgentWorkforce/relay/tree/main/.claude/skills/browser-testing-with-screenshots into .cursor/skills/browser-testing-with-screenshots/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-testing-with-screenshots", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/AgentWorkforce/relay.git --path .claude/skills/browser-testing-with-screenshots--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add AgentWorkforce/relay --skill browser-testing-with-screenshots -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install AgentWorkforce/relay browser-testing-with-screenshots --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AgentWorkforce/relay.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/browser-testing-with-screenshots .gemini/skills/browser-testing-with-screenshots && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "browser-testing-with-screenshots" agent skill from https://github.com/AgentWorkforce/relay/tree/main/.claude/skills/browser-testing-with-screenshots into .gemini/skills/browser-testing-with-screenshots/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-testing-with-screenshots", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install AgentWorkforce/relay browser-testing-with-screenshotsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add AgentWorkforce/relay --skill browser-testing-with-screenshots -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/AgentWorkforce/relay.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/browser-testing-with-screenshots .github/skills/browser-testing-with-screenshots && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "browser-testing-with-screenshots" agent skill from https://github.com/AgentWorkforce/relay/tree/main/.claude/skills/browser-testing-with-screenshots into .github/skills/browser-testing-with-screenshots/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-testing-with-screenshots", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add AgentWorkforce/relay --skill browser-testing-with-screenshots -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install AgentWorkforce/relay browser-testing-with-screenshots --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AgentWorkforce/relay.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/browser-testing-with-screenshots .opencode/skills/browser-testing-with-screenshots && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "browser-testing-with-screenshots" agent skill from https://github.com/AgentWorkforce/relay/tree/main/.claude/skills/browser-testing-with-screenshots into .opencode/skills/browser-testing-with-screenshots/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "browser-testing-with-screenshots", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
browser-testing-with-screenshotsA skill your agent uses when testing web applications with visual verification - automates Chrome browser interactions, element selection, and screenshot capture for confirming UI functionality
Browser Testing With Screenshots is an agent skill from AgentWorkforce/relay. Use when testing web applications with visual verification - automates Chrome browser interactions, element selection, and screenshot capture for confirming UI functionality
Its SKILL.md is about 2.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Testing & QA, covering Browser testing. The repository describes itself as: Infrastructure for coding agents. The licence is Apache-2.0.
3 steps, taken from the step headings in SKILL.md.
Read from SKILL.md and the folder at commit 734600d. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Shell commands in SKILL.md call:
gitFrom the folder's file list and the shell code blocks in SKILL.md.
Hosts in commands or code, which the agent is likely to contact:
github.comFrom URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Browser Testing With Screenshots loads about 2.2k tokens when it runs. Until then it costs about 52 tokens; SKILL.md has 437 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
The full file from AgentWorkforce/relay at commit 734600d, republished under its Apache-2.0 licence (© AgentWorkforce). 437 words, ~2,183 tokens.
.claude/skills/browser-testing-with-screenshots/SKILL.md (or your agent's skills folder).Automate Chrome browser testing with visual verification using browser-tools. Connect to Chrome DevTools Protocol for navigation, interaction, and screenshot capture to confirm application functionality.
REQUIRED: Install agent-tools from https://github.com/badlogic/agent-tools
# Clone and install agent-tools
git clone https://github.com/badlogic/agent-tools.git
cd agent-tools
# Follow installation instructions in the repository
# Ensure all executables (browser-start.js, browser-nav.js, etc.) are in your PATHVerify installation:
# Check that browser tools are available
which browser-start.js
which browser-nav.js
which browser-screenshot.jsAll browser-* commands referenced in this skill come from the agent-tools repository and must be properly installed and accessible in your system PATH.
Use this skill when:
Don't use for:
| Task | Command | Purpose |
|---|---|---|
| Start browser | browser-start.js | Launch Chrome with debugging |
| Navigate | browser-nav.js http://localhost:5172/dashboard | Go to specific URL |
| Take screenshot | browser-screenshot.js | Capture current viewport |
| Pick elements | browser-pick.js "Select the login button" | Interactive element selection |
| Run JavaScript | browser-eval.js 'document.title' | Execute code in page context |
| Extract content | browser-content.js | Get readable page content |
| View cookies | browser-cookies.js | List session cookies |
# Launch Chrome with debugging enabled (preserves user profile)
browser-start.js
# Or start fresh (no cookies, clean state)
browser-start.js --freshExpected Result: Chrome opens on port 9222 with DevTools Protocol enabled
# Go to your application starting point
browser-nav.js http://localhost:5172/dashboardVerify: Browser navigates to dashboard page
# Take initial screenshot to confirm page loaded
browser-screenshot.jsOutput: Returns path to screenshot file (e.g., screenshot_20231203_141532.png)
#!/bin/bash
# Test login and dashboard functionality
echo "🚀 Starting browser test..."
# 1. Launch browser
browser-start.js --fresh
# 2. Navigate to login page
browser-nav.js http://localhost:5172/login
sleep 2
# 3. Take screenshot of login page
LOGIN_SHOT=$(browser-screenshot.js)
echo "📸 Login page: $LOGIN_SHOT"
# 4. Fill login form (interactive element picking)
browser-pick.js "Click the username field"
browser-eval.js 'document.activeElement.value = "testuser"'
browser-pick.js "Click the password field"
browser-eval.js 'document.activeElement.value = "password123"'
# 5. Screenshot filled form
FORM_SHOT=$(browser-screenshot.js)
echo "📸 Filled form: $FORM_SHOT"
# 6. Submit form
browser-pick.js "Click the login button"
sleep 3
# 7. Verify dashboard loaded
browser-nav.js http://localhost:5172/dashboard
DASHBOARD_SHOT=$(browser-screenshot.js)
echo "📸 Dashboard: $DASHBOARD_SHOT"
# 8. Verify specific dashboard elements
browser-pick.js "Select the navigation menu"
browser-eval.js 'console.log("Navigation found:", !!document.querySelector(".nav"))'
echo "✅ Test complete. Screenshots saved."# Interactive element selection (best for dynamic content)
browser-pick.js "Select the submit button"
# User clicks element in browser → returns CSS selector
# Use returned selector for automation
SELECTOR=$(browser-pick.js "Select the submit button" | grep "selector:")
browser-eval.js "document.querySelector('$SELECTOR').click()"
# Take screenshot to verify action
browser-screenshot.js# Check if element exists before interaction
browser-eval.js 'document.querySelector("#login-form") !== null'
# Wait for dynamic content
browser-eval.js '
new Promise(resolve => {
const check = () => {
if (document.querySelector(".loaded")) resolve(true);
else setTimeout(check, 100);
};
check();
})
'
# Extract form data
browser-eval.js 'JSON.stringify(Object.fromEntries(new FormData(document.querySelector("form"))))'# Navigate and wait before screenshot
browser-nav.js http://localhost:5172/slow-page
sleep 5 # Wait for animations/loading
browser-screenshot.js# Get page title
PAGE_TITLE=$(browser-eval.js 'document.title')
echo "Current page: $PAGE_TITLE"
# Extract readable content
browser-content.js > page_content.md
# Check for specific text
browser-eval.js 'document.body.textContent.includes("Welcome to Dashboard")'| Mistake | Problem | Solution |
|---|---|---|
| No sleep after navigation | Screenshots of loading page | Add sleep 2-5 after nav |
| Hardcoded selectors | Breaks when UI changes | Use browser-pick.js for selection |
| Missing Chrome setup | "Connection refused" errors | Run browser-start.js first |
| Wrong localhost port | Navigation fails | Verify application is running on correct port |
| Screenshot timing | Captures before content loads | Wait for page load or specific elements |
| Not preserving state | Login lost between commands | Use default profile, not --fresh |
# Check if Chrome is running
if ! browser-eval.js 'true' 2>/dev/null; then
echo "❌ Chrome not connected. Running browser-start.js..."
browser-start.js
fi
# Verify navigation succeeded
if browser-eval.js 'location.href.includes("dashboard")'; then
echo "✅ Navigation successful"
else
echo "❌ Navigation failed"
exit 1
fiscreenshot_YYYYMMDD_HHMMSS.png in current directorybrowser-content.jsbrowser-pick.js interactionbrowser-eval.js# Create test evidence directory
mkdir -p test-results/$(date +%Y%m%d_%H%M%S)
cd test-results/$(date +%Y%m%d_%H%M%S)
# Run tests with organized screenshots
browser-start.js
for page in login dashboard profile; do
browser-nav.js "http://localhost:5172/$page"
sleep 2
screenshot=$(browser-screenshot.js)
mv "$screenshot" "${page}_page.png"
echo "✅ $page page tested"
doneBenefits:
Results:
Key principle: Combine automated navigation with human element selection for robust, maintainable browser testing.
© AgentWorkforce, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Just SKILL.md in .claude/skills/browser-testing-with-screenshots of AgentWorkforce/relay.
Open the folder on GitHubat commit 734600d
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in AgentWorkforce/relay, which our catalogue first saw on October 7, 2026.
Browser Testing With Screenshots next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Browser Testing With Screenshots this skillAgentWorkforce/relay | 865 | 1 repos | ~2.2k | Automated safety check: Pass | Apache-2.0 | |
| Web Application Testinganthropics/skills | 180k | 51 repos | ~966 | Automated safety check: Pass | Apache-2.0 | |
| BrowserStack Live Testinghandsontable/handsontable | 22k | — | ~950 | Automated safety check: Pass | Custom licence | |
| Chrome Tracelayoutit/polycss | 757 | — | ~2k | Automated safety check: Pass | MIT | |
| JS-in-HTML Testingliaohch3/claude-tap | 3.3k | — | ~924 | Automated safety check: Pass | MIT | |
| Diff-Driven QASkyvern-AI/skyvern | 23k | — | ~4.7k | Automated safety check: Warn | AGPL-3.0 |
anthropics/skills
Tests local web applications with Python Playwright scripts, checking frontend behavior, capturing screenshots and reading browser console logs.
handsontable/handsontable
Opens a live BrowserStack session on a real Android, iOS or desktop browser for a local or public URL, tunneling localhost through Cloudflare when needed.
layoutit/polycss
Capture and analyze Chrome/Chromium performance traces with Playwright around a concrete browser interaction.
liaohch3/claude-tap
Tests JavaScript embedded in an HTML file in two layers: pytest checks of the logic ported to Python, and Playwright runs in a real browser for the DOM.
Skyvern-AI/skyvern
Reads your git diff, decides whether the change needs browser QA, API checks or repo tests, runs that validation and reports pass or fail with evidence.
debs-obrien/playwright-movies-app
Dogfood the learn/ course like a new user: docs site walk, fresh clone setup, then Practice and shell steps from each module.
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Categories
A skill your agent uses when testing web applications with visual verification - automates Chrome browser interactions, element selection, and screenshot capture for confirming UI functionality. Browser Testing With Screenshots is an agent skill from AgentWorkforce/relay.
Browser Testing With Screenshots fits situations like: testing web applications with visual verification - automates Chrome browser interactions; element selection; screenshot capture for confirming UI functionality.
Run `npx skills add AgentWorkforce/relay --skill browser-testing-with-screenshots -a claude-code`. Or copy the skill folder (.claude/skills/browser-testing-with-screenshots in AgentWorkforce/relay) into .claude/skills/browser-testing-with-screenshots in your project. Claude Code loads it when a task matches its description.
Run `npx skills add AgentWorkforce/relay --skill browser-testing-with-screenshots -a codex`. Or copy the skill folder (.claude/skills/browser-testing-with-screenshots in AgentWorkforce/relay) into .agents/skills/browser-testing-with-screenshots in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add AgentWorkforce/relay --skill browser-testing-with-screenshots -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/browser-testing-with-screenshots, .gemini/skills/browser-testing-with-screenshots, .github/skills/browser-testing-with-screenshots and .opencode/skills/browser-testing-with-screenshots in your project.
Going by SKILL.md and its folder, Browser Testing With Screenshots needs the command-line tools its instructions call (git).
SKILL.md names 1 domain. In commands or code: github.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
Browser Testing With Screenshots is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 2.2k tokens (SKILL.md is roughly 8.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Browser Testing With Screenshots: Web Application Testing (anthropics/skills, 180k stars), BrowserStack Live Testing (handsontable/handsontable, 22k stars), Chrome Trace (layoutit/polycss, 757 stars) and JS-in-HTML Testing (liaohch3/claude-tap, 3.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
AgentWorkforce (a GitHub organization) maintains it in AgentWorkforce/relay, which has 865 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on October 7, 2026.
Source: AgentWorkforce/relay on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.