playwright-movies-app: Skill for Claude Code

.agents/skills/learn-dogfood/SKILL.md

learn-dogfood is a skill for Claude Code, Codex from debs-obrien/playwright-movies-app. It costs 69 tokens per session (1,114 once invoked), scanned A, original, MIT.

A quality-assurance procedure that tests the learn course as a new user would. It checks the documentation site, setup, practice exercises, and shell steps in selected course modules.

In plain words
What is it for?
Use it to validate the learner journey, recheck selected modules, or run documentation-only checks and report what fails.
Why use it?
It finds learner-facing blockers after course or curriculum changes without changing the course files.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents); mentions AGENTS.md.

This is debs-obrien/playwright-movies-app's own configuration. It tells Claude Code and Codex how to work on playwright-movies-app itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything playwright-movies-app configures →

Reuse

Borrowing it

Nothing to install: this file belongs to debs-obrien/playwright-movies-app. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/debs-obrien/playwright-movies-app/main/.agents/skills/learn-dogfood/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/debs-obrien/playwright-movies-app

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for learn-dogfood

README.md
[![agentmods](https://agentmods.dev/badge/skills/debs-obrien/playwright-movies-app/learn-dogfood/github.svg)](https://agentmods.dev/skills/debs-obrien/playwright-movies-app/learn-dogfood)
Your own site
<a href="https://agentmods.dev/skills/debs-obrien/playwright-movies-app/learn-dogfood"><img src="https://agentmods.dev/badge/skills/debs-obrien/playwright-movies-app/learn-dogfood/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.

agentmods 80×15 button for learn-dogfood

Your own site · 80×15
<a href="https://agentmods.dev/skills/debs-obrien/playwright-movies-app/learn-dogfood"><img src="https://agentmods.dev/badge/skills/debs-obrien/playwright-movies-app/learn-dogfood.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,114 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 6 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Privilege Escalation · line 67
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • medium MCP Rug Pull · line 49
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 66
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 86
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 87
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 88
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00069 $0.01114
Opus 5 $0.00034 $0.00557
Sonnet 5 $0.00014 $0.00223
Haiku 4.5 $0.00007 $0.00111

Measured 13d ago against content hash 7a4b70842c27, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

learn-dogfood 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 13d 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.

.agents/skills/learn-dogfood/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Learn dogfood

Maintainer QA for the VitePress course under learn/. Simulate a new learner and report blockers. Do not coach a human one step at a time — that is learn-lab-coach.

Sources of truth

  • Module pages: learn/*.md and learn/index.md
  • Setup copy: learn/00-start-here.md, root README.md
  • House style: AGENTS.md, docs/TESTING.md, docs/AI-TESTING.md
  • Skills for labs: movies-playwright, playwright-cli, playwright-trace

Do not invent commands, files, or APIs missing from those sources.

Scope

Ask once if unclear. Defaults:

Scope Modules
beginner (default) 00 → 04, then foundations smoke, then 05 → 11 if time
ai-first 00 setup, AGENTS.md, 07, 09
module N 00 setup (if needed) + that module only
docs-only Layer A only

Continue on failure unless the user says stop-on-fail. Fix nothing unless asked — report only.

Procedure

Layer A — Docs site

From the repo under test (workspace or temp clone):

npm run docs:dev

Open http://127.0.0.1:5173/course (VitePress default). Prefer npx playwright cli; browser MCP is fine for click-through.

Check:

  1. Course home loads; beginner / intermediate / AI-first links work.
  2. 00 → each in-scope module via in-page Next / agenda links.
  3. CTAs: live Movies demo, clone/GitHub, /docs/TESTING, /docs/AI-TESTING, /AGENTS.
  4. Note 404s, broken anchors, and copy that contradicts learn/00-start-here.md.

Layer B — Fresh learner setup

Prefer a clean temp clone so dirty WIP does not hide broken instructions:

git clone https://github.com/debs-obrien/playwright-movies-app.git /tmp/movies-learn-dogfood
cd /tmp/movies-learn-dogfood
npm install
npx playwright install chromium
cp .env.example .env

Run the block from learn/00-start-here.md verbatim when it differs. Record any step that fails on a clean tree.

If the user asks to dogfood uncommitted learn/ edits, use the workspace (or a worktree of the current branch) for Layers A–C instead of main on GitHub.

Read the full file on GitHub · 114 lines

Changes

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.

  1. 13d ago First seen · 114 lines · 69 tokens per session scan A 7a4b70842c27

Subscribe to this mod's changes

learn-dogfood is a skill published in the GitHub repository debs-obrien/playwright-movies-app (102 stars, last pushed 1mo ago), licensed MIT. It adds 69 tokens to every session and 1,114 once invoked, about $0.0003 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.

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