Borrowing it
Nothing to install: this file belongs to J0from/oss-playwright-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/J0from/oss-playwright-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/J0from/oss-playwright-mcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/j0from/oss-playwright-mcp/claude-md)<a href="https://agentmods.dev/instructions/j0from/oss-playwright-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/j0from/oss-playwright-mcp/claude-md.svg" alt="Measured on agentmods" height="20"></a>What 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 5.1 | $0.00363 | $0.00363 |
| Opus 5 | $0.00181 | $0.00181 |
| Sonnet 5 | $0.00073 | $0.00073 |
| Haiku 4.5 | $0.00036 | $0.00036 |
Grade A, and why
oss-playwright-mcp CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
100% identical to playwright-mcp CLAUDE.md — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
Commit Convention
Semantic commit messages: label(scope): description
Labels: fix, feat, chore, docs, test, devops
git checkout -b fix-39562
# ... make changes ...
git add <changed-files>
git commit -m "$(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>
Rolling Playwright
- Run
node roll.js(ornpm run roll) to bumpplaywright,playwright-core, and@playwright/test, refreshconfig.d.ts, and regenerate the README. The script prints the resolved version — use its suffix for the branch name. - Create a branch:
git checkout -b roll-pw-<version-suffix>. - Run
npm test. Only proceed if all tests pass. - Commit with
chore: roll Playwright to <version>, push, and open a PR againstmicrosoft/playwright-mcpwith the same title.
Preparing a Release
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.
- 6d ago First seen · 42 lines · 363 tokens per session scan A e4cf26b7670c
oss-playwright-mcp CLAUDE.md is an instructions file published in the GitHub repository J0from/oss-playwright-mcp (0 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 363 tokens to every session, about $0.0018 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to playwright-mcp CLAUDE.md, differing in 0 lines, and is treated as a copy.
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