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 neonwatty/playwright-profiles --skill auth-browsegit clone --depth 1 https://github.com/neonwatty/playwright-profilesWrote 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/neonwatty/playwright-profiles/auth-browse)<a href="https://agentmods.dev/skills/neonwatty/playwright-profiles/auth-browse"><img src="https://agentmods.dev/badge/skills/neonwatty/playwright-profiles/auth-browse/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/neonwatty/playwright-profiles/auth-browse"><img src="https://agentmods.dev/badge/skills/neonwatty/playwright-profiles/auth-browse.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 | $0.00134 | $0.02141 |
| Opus 5 | $0.00067 | $0.01071 |
| Sonnet 5 | $0.00027 | $0.00428 |
| Haiku 4.5 | $0.00013 | $0.00214 |
Grade A, and why
auth-browse 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 9d 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 — 215 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Authenticated Browsing with Playwright CLI
Browse external services (Cloudflare, Sentry, PostHog, Supabase, Vercel, GitHub, AWS, etc.) using playwright-cli with persistent authentication. Defaults to Playwright's bundled Chromium (works while Chrome is open); use --tier chrome for sites with bot detection.
How This Differs from use-profiles
- use-profiles: Per-project, role-based auth (admin/user/speaker) for the project's own app, using Playwright MCP
- auth-browse: Global, service-based auth for external dashboards (Cloudflare, Sentry, etc.) using
playwright-cliwith persistent authentication. Defaults to Chromium; uses real Chrome for bot-protected sites
Both skills can coexist. Use use-profiles for testing your app with different roles. Use auth-browse for browsing third-party services.
Architecture
All auth state lives in ~/.playwright-cli/:
~/.playwright-cli/
├── sign-in.mjs ← Sign-in script (bundled with this skill)
├── chrome-profile/ ← Default Chrome profile (shared across all sites)
├── chrome-profile-<name>/ ← Isolated profiles (--profile flag, for multi-user)
├── sites.json ← User-added custom site shortcuts
├── auth-cloudflare.json ← Per-site cookie snapshots
├── auth-sentry.json
├── package.json ← Playwright dependency
└── node_modules/
The persistent Chrome profile accumulates sessions from all sign-ins. When browsing with --persistent --profile, all sites are already authenticated.
Setup
First-time setup requires installing the script and its dependency:
mkdir -p ~/.playwright-cli
cp <path-to-this-skill>/scripts/sign-in.mjs ~/.playwright-cli/sign-in.mjs
cp <path-to-this-skill>/scripts/cookie-analysis.mjs ~/.playwright-cli/cookie-analysis.mjs
cd ~/.playwright-cli && npm init -y && npm install playwright
The script path for this skill is relative to the plugin install location. Use Glob to find it:
skills/auth-browse/scripts/sign-in.mjs
What ships with it
3 files 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.
- 9d ago First seen · 215 lines · 134 tokens per session scan A 9a3fc51c4d31
auth-browse is a skill published in the GitHub repository neonwatty/playwright-profiles (4 stars, last pushed 4mo ago), licensed MIT. It adds 134 tokens to every session and 2,141 once invoked, about $0.0007 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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