Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/microsoft/playwright-cli/claude-mdgit clone --depth 1 https://github.com/microsoft/playwright-cliWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00203 | $0.00203 |
| Opus 5 | $0.00102 | $0.00102 |
| Sonnet 5 | $0.00041 | $0.00041 |
| Haiku 4.5 | $0.00020 | $0.00020 |
Grade A, and why
playwright-cli CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
4 near-identical copies found in the catalogue:
- playwright-mcp2 CLAUDE.md — 100% identical, 61 lines differ
- mcp CLAUDE.md — 100% identical, 1 lines differ
- playwright-mcp CLAUDE.md — 100% identical, 1 lines differ
- playwright-mcp-parallel CLAUDE.md — 100% identical, 1 lines differ
What it actually says
Commit Convention
Semantic commit messages: label(scope): description
Labels: fix, feat, chore, docs, test, devops
git checkout -b fix-39562
# ... make changes ...
git add <changed-files>
git commit -m "$(cat <<'EOF'
fix(proxy): handle SOCKS proxy authentication
Fixes: https://github.com/microsoft/playwright/issues/39562
EOF
)"
git push origin fix-39562
gh pr create --repo microsoft/playwright --head username:fix-39562 \
--title "fix(proxy): handle SOCKS proxy authentication" \
--body "$(cat <<'EOF'
## Summary
- <describe the change very! briefly>
Fixes https://github.com/microsoft/playwright/issues/39562
EOF
)"
Never add Co-Authored-By agents in commit message.
Branch naming for issue fixes: fix-<issue-number>
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- yesterday First seen · 31 lines · 203 tokens per session scan A cdd2ff91e708
playwright-cli CLAUDE.md is an instructions file published in the GitHub repository microsoft/playwright-cli (12,960 stars, last pushed 4d ago), licensed Apache-2.0. It adds 203 tokens to every session, about $0.0010 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
playwright CLAUDE.md
Instructions for microsoft/playwright, covering monorepo packages, browser packages, tooling packages, key directories and build.
playwriter AGENTS.md
Instructions for remorses/playwriter, covering backward compatibility, architecture, development, running mcp locally and running cli locally.
cli AGENTS.md
Instructions for qawolf/cli, covering @qawolf/cli — agent instructions, commands, testing, project structure and code style.
grok-register-panel AGENTS.md
Instructions for lij768423-svg/grok-register-panel, covering agents.md, project scope, architecture and ownership, runtime flows and setup and run.
dev-browser AGENTS.md
Instructions for SawyerHood/dev-browser, covering claude.md, tooling and validation.
playwright-rust CLAUDE.md
Instructions for padamson/playwright-rust, covering claude.md, project, repository layout, skills (procedural reference) and documentation hierarchy.