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Agent skill

Browser QA

by affaan-m in affaan-m/ECC

このスキルを使用して、機能をデプロイ後にブラウザ自動化を使用した自動ビジュアルテストとUI相互作用検証を自動化します. An agent skill from affaan-m/ECC.

MITAuto-check passed

Install Browser QA

skills CLI
$ npx skills add affaan-m/ECC --skill browser-qa -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install affaan-m/ECC browser-qa --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .claude/skills && cp -r skills-src/docs/ja-JP/skills/browser-qa .claude/skills/browser-qa && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
browser-qa
GitHub stars
276k
Token cost
~385 tokens
SKILL.md length
20 words
Files
1
Skills in repo
673
Repo updated
First seen
Licence
MIT

At a glance

このスキルを使用して、機能をデプロイ後にブラウザ自動化を使用した自動ビジュアルテストとUI相互作用検証を自動化します. An agent skill from affaan-m/ECC.

  • SKILL.md covers 使用時期, 動作方法, 出力形式 and 統合
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Browser QA is an agent skill from affaan-m/ECC. このスキルを使用して、機能をデプロイ後にブラウザ自動化を使用した自動ビジュアルテストとUI相互作用検証を自動化します。

Its SKILL.md is about 390 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond. The licence is MIT.

Example prompts

  • “/browser-qa”

What it can do on your machine

Read from SKILL.md and the folder at commit ef648e0. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Browser QA loads about 385 tokens when it runs. Until then it costs about 18 tokens; SKILL.md has 20 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~18
When it runs · the whole SKILL.md, loaded when a task matches
~385

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from affaan-m/ECC at commit ef648e0, republished under its MIT licence (© affaan-m). 20 words, ~385 tokens.

Download SKILL.mdSave it as .claude/skills/browser-qa/SKILL.md (or your agent's skills folder).
name
browser-qa
description
このスキルを使用して、機能をデプロイ後にブラウザ自動化を使用した自動ビジュアルテストとUI相互作用検証を自動化します。
origin
ECC

ブラウザQA — 自動ビジュアルテストと相互作用

使用時期

  • ステージング/プレビューに機能をデプロイ後
  • ページ全体のUIの動作を検証する必要がある場合
  • 出荷前 — レイアウト、フォーム、相互作用が実際に機能することを確認
  • フロントエンドコードに触れるPRをレビューする場合
  • アクセシビリティ監査とレスポンシブテスト

動作方法

ブラウザオートメーションMCP（claude-in-chrome、Playwright、またはPuppeteer）を使用して、実際のユーザーのようにライブページと相互作用します。

フェーズ1：スモークテスト
1. ターゲットURLに移動
2. コンソールエラーをチェック（ノイズをフィルター：分析、サードパーティ）
3. ネットワークリクエストで4xx/5xxがないことを確認
4. デスクトップ+モバイルビューポート上の上にスクリーンショット
5. Core Web Vitalsをチェック：LCP < 2.5s、CLS < 0.1、INP < 200ms
フェーズ2：相互作用テスト
1. すべてのnavリンクをクリック — デッドリンクがないことを確認
2. 有効なデータでフォームを送信 — 成功状態を確認
3. 無効なデータでフォームを送信 — エラー状態を確認
4. 認証フローをテスト：ログイン→保護されたページ→ログアウト
5. 重要なユーザージャーニーをテスト（チェックアウト、オンボーディング、検索）
フェーズ3：ビジュアル回帰
1. 3つのブレークポイント（375px、768px、1440px）でキーページのスクリーンショット
2. ベースラインスクリーンショット（保存されている場合）と比較
3. レイアウトシフト> 5px、要素の欠落、オーバーフローにフラグを立てる
4. 該当する場合はダークモードをチェック
フェーズ4：アクセシビリティ
1. 各ページでaxe-coreまたは同等のものを実行
2. WCAG AAの違反にフラグを立てる（コントラスト、ラベル、フォーカス順）
3. キーボードナビゲーションがエンドツーエンドで機能することを確認
4. スクリーンリーダーランドマークをチェック

出力形式

markdown
## QA Report — [URL] — [timestamp]

### Smoke Test
- ✓ ページが読み込まれる
- ✗ コンソールエラー：オプト不可なトラッキング警告
- ✓ Core Web Vitals OK
- [スクリーンショット]

### 相互作用テスト
- ✓ ナビゲーション機能
- ✓ フォーム検証
- ✗ モバイルメニューが開かない

### ビジュアル回帰
- ✓ デスクトップレイアウト
- ✗ モバイルで画像がオーバーフロー

### アクセシビリティ
- 1 WCAG AA: コントラスト違反
- 0 WCAG A違反

統合

  • /benchmarkとペアリングしてパフォーマンス確認
  • /canary-watchとペアリングしてデプロイ後の監視を自動化
  • PullRequestワークフローに組み込んでフロントエンドPRをキャッチ

© affaan-m, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in docs/ja-JP/skills/browser-qa of affaan-m/ECC.

Open the folder on GitHubat commit ef648e0

Compare with similar skills

Browser QA next to the 2 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Browser QA compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Browser QA this skillaffaan-m/ECC276k—~385Automated safety check: PassMIT
Benchmarkaffaan-m/ECC276k—~412Automated safety check: PassMIT
Canary Watchaffaan-m/ECC276k—~405Automated safety check: PassMIT

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    276k GitHub stars~412 tokensUpdated 4 days ago
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Questions about Browser QA

What does Browser QA do?

このスキルを使用して、機能をデプロイ後にブラウザ自動化を使用した自動ビジュアルテストとUI相互作用検証を自動化します. An agent skill from affaan-m/ECC. Browser QA is an agent skill from affaan-m/ECC.

How do I install Browser QA in Claude Code?

Run `npx skills add affaan-m/ECC --skill browser-qa -a claude-code`. Or copy the skill folder (docs/ja-JP/skills/browser-qa in affaan-m/ECC) into .claude/skills/browser-qa in your project. Claude Code loads it when a task matches its description.

How do I install Browser QA in Codex?

Run `npx skills add affaan-m/ECC --skill browser-qa -a codex`. Or copy the skill folder (docs/ja-JP/skills/browser-qa in affaan-m/ECC) into .agents/skills/browser-qa in your project. Codex loads it when a task matches its description.

Can I use Browser QA in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add affaan-m/ECC --skill browser-qa -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/browser-qa, .gemini/skills/browser-qa, .github/skills/browser-qa and .opencode/skills/browser-qa in your project.

What does Browser QA need to run?

SKILL.md names no scripts, command-line tools or credentials: Browser QA is instructions for the agent only.

Does Browser QA access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Browser QA safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Browser QA use?

Browser QA is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Browser QA use?

About 385 tokens (SKILL.md is roughly 1.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Browser QA?

Skills that share tags, products or a category with Browser QA: Benchmark (affaan-m/ECC, 276k stars) and Canary Watch (affaan-m/ECC, 276k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Browser QA?

affaan-m (a GitHub user) maintains it in affaan-m/ECC, which has 275,546 GitHub stars. The repository holds 673 skills in this directory. The repository was last updated on October 5, 2026.

Source: affaan-m/ECC on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.