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 skills add sutchan/Agent-Skills-Hub --skill playwritergit clone --depth 1 https://github.com/sutchan/Agent-Skills-HubWrote 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/skills/sutchan/agent-skills-hub/playwriter)<a href="https://agentmods.dev/skills/sutchan/agent-skills-hub/playwriter"><img src="https://agentmods.dev/badge/skills/sutchan/agent-skills-hub/playwriter/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/sutchan/agent-skills-hub/playwriter"><img src="https://agentmods.dev/badge/skills/sutchan/agent-skills-hub/playwriter.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00104 | $0.00723 |
| Opus 5 | $0.00052 | $0.00362 |
| Sonnet 5 | $0.00021 | $0.00145 |
| Haiku 4.5 | $0.00010 | $0.00072 |
Grade A, and why
playwriter 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Playwriter
Use this skill to drive the user's active Chrome tab via Playwriter.
Full documentation is available here: https://playwriter.dev/
Quick Start
- Ensure the Playwriter extension is enabled (green) on the target tab.
- Ensure CLI is available:
playwriter --version || npx -y playwriter --version
- Create/attach a session:
playwriter session new
- Run commands against that session:
playwriter -s 1 -e "console.log(await page.url())"
Core Workflow
- Confirm connection and correct tab:
playwriter -s <session> -e "console.log(await page.url()); console.log(await page.title());"
- Collect page structure when needed:
playwriter -s <session> -e "console.log(await accessibilitySnapshot({ page }))"
- Execute targeted actions (click/type/hover/fetch/evaluate).
- Pull logs and structured state via
page.evaluate. - Summarize findings with exact IDs, timestamps, and observed state transitions.
Useful Commands
Get list rows/options from current app UI:
playwriter -s <session> -e "const rows = await page.getByRole('option').all(); console.log(rows.length);"
Read popup/hover content:
playwriter -s <session> -e "const row = page.getByRole('option').nth(0); await row.hover(); await page.waitForTimeout(700); console.log(await page.locator('[data-side]').first().innerText());"
Run arbitrary in-page debug code:
playwriter -s <session> -e "const out = await page.evaluate(() => ({ href: location.href })); console.log(out);"
Troubleshooting
- If the session attaches to the wrong tab, click the extension icon on the intended tab and re-run
playwriter session new. - If
playwritercommand is missing, usenpx -y playwriter ...or install globally. - If execution errors suggest stale connection, create a fresh session.
Guardrails
- Prefer read-only inspection unless the task requires mutation.
- Announce destructive UI actions before running them.
- When capturing logs, redact sensitive tokens/user data in summaries.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 8d ago First seen · 86 lines · 104 tokens per session scan A 5a3401b5ffcb
playwriter is a skill published in the GitHub repository sutchan/Agent-Skills-Hub (2 stars, last pushed today), licensed MIT. It adds 104 tokens to every session and 723 once invoked, about $0.0005 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 2026-09-04.
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