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Browser automation — navigate, click, fill, snapshot web pages. Use for UI testing, documentation scraping, OAuth flows, web research.
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
Based on SOC occupation classification
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Build the project and verify it compiles cleanly. Use after making changes to confirm nothing is broken before running tests. Reads the build command from claude/build.md.
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| name | playwright |
| description | Browser automation — navigate, click, fill, snapshot web pages. Use for UI testing, documentation scraping, OAuth flows, web research. |
| user-invocable | true |
| disable-model-invocation | true |
Use when: you need to interact with a web page — test a UI, scrape docs, verify a login flow, research a live API.
MCP server key: playwright — tools: mcp__playwright__*
Token cost: 🟡 LOW-MEDIUM — accessibility snapshots are structured text (no pixel cost); large pages produce verbose trees.
| Task | Use |
|---|---|
| "Test this login form end-to-end" | playwright |
| "Scrape this documentation page" | playwright |
| "Verify OAuth redirect works" | playwright |
| "Find code about auth" | cocoindex-code (semantic search) |
| "What does AuthService call?" | codebase-memory-mcp (structural graph) |
| "Is this PR safe to ship?" | code-review-graph |
mcp__playwright__browser_navigate(url) — go to URL
mcp__playwright__browser_snapshot() — accessibility tree (PREFER over screenshot)
mcp__playwright__browser_click(element, ref) — click by accessibility label
mcp__playwright__browser_fill(element, ref, val) — fill an input
mcp__playwright__browser_screenshot() — visual capture (only when structure is insufficient)
mcp__playwright__browser_evaluate(script) — run JS in page context
mcp__playwright__browser_wait_for_url(url) — wait for navigation
mcp__playwright__browser_close() — clean up when done
1. browser_navigate(url)
2. browser_snapshot() ← read the accessibility tree
3. browser_click / browser_fill ← interact by element label or ref
4. browser_snapshot() ← verify the new state
5. browser_close() ← always clean up
Never use browser_screenshot as the first action — accessibility snapshots give the same structural information at a fraction of the token cost.
browser_snapshot returns a structured accessibility tree — use element labels for clicking/fillingbrowser_evaluate for data extraction over reading the full snapshot repeatedlybrowser_close when done — open tabs accumulate contextbrowser_evaluate("document.querySelector('selector').textContent") to extract specific content without loading the full tree# Pre-install Chromium browsers (avoids download delay on first use)
npx playwright install chromium
# Full install with system dependencies (Linux CI)
npx playwright install chromium --with-deps
The MCP server (npx @playwright/mcp@latest) lazy-installs on first invocation — no manual setup required if Chromium is already installed.