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 skills/arnosdeus/agent-toolkit/playwrightnpx skills add Arnosdeus/agent-toolkit --skill playwrightgit clone --depth 1 https://github.com/Arnosdeus/agent-toolkitWhat 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 | $0.00029 | $0.00197 |
| Opus 5 | $0.00015 | $0.00098 |
| Sonnet 5 | $0.00006 | $0.00039 |
| Haiku 4.5 | $0.00003 | $0.00020 |
Grade A, and why
playwright 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.
What it actually says
Playwright
Use the project's existing Playwright setup when present. Start the application with its documented command, wait for its actual readiness signal, and use headless Chromium unless a headed run is needed for diagnosis.
Cover meaningful flows: navigation and deep links, keyboard access, forms and validation, loading/empty/error states, authentication boundaries, and responsive viewports. Capture screenshots at stable points. Listen for page console errors, uncaught exceptions, failed requests, and unexpected redirects. Prefer stable roles, labels, and user-visible text over brittle selectors. Clean up test data, avoid secrets, and report browser/version and known limitations.
Typical commands: npx playwright test, npx playwright test --headed, and
npx playwright install chromium. Do not install unnecessary browsers.
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 · 21 lines · 29 tokens per session scan A fbd3f02eb219
playwright is a skill published in the GitHub repository Arnosdeus/agent-toolkit (2 stars, last pushed 8d ago), licensed MIT. It adds 29 tokens to every session and 197 once invoked, about $0.0001 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 2026-08-31.
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