Skill Stocktake
affaan-m/ECC
Audits your installed Claude skills and commands for quality, with a quick mode for recently changed skills and a full mode that evaluates all of them through subagents.
AI エージェントが大量の実装出力を生成するチームのためのエンジニアリング運用モデル. An agent skill from affaan-m/ECC.
MITAuto-check passed
Install AI First Engineering
$ npx skills add affaan-m/ECC --skill ai-first-engineering -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install affaan-m/ECC ai-first-engineering --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ 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/ai-first-engineering .claude/skills/ai-first-engineering && rm -rf skills-srcUse ~/.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/
Install the "ai-first-engineering" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/ai-first-engineering into .claude/skills/ai-first-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ai-first-engineering", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/ai-first-engineeringType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add affaan-m/ECC --skill ai-first-engineering -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install affaan-m/ECC ai-first-engineering --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .agents/skills && cp -r skills-src/docs/ja-JP/skills/ai-first-engineering .agents/skills/ai-first-engineering && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "ai-first-engineering" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/ai-first-engineering into .agents/skills/ai-first-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ai-first-engineering", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add affaan-m/ECC --skill ai-first-engineering -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install affaan-m/ECC ai-first-engineering --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/docs/ja-JP/skills/ai-first-engineering .cursor/skills/ai-first-engineering && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "ai-first-engineering" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/ai-first-engineering into .cursor/skills/ai-first-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ai-first-engineering", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/affaan-m/ECC.git --path docs/ja-JP/skills/ai-first-engineering--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add affaan-m/ECC --skill ai-first-engineering -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install affaan-m/ECC ai-first-engineering --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/docs/ja-JP/skills/ai-first-engineering .gemini/skills/ai-first-engineering && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "ai-first-engineering" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/ai-first-engineering into .gemini/skills/ai-first-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ai-first-engineering", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install affaan-m/ECC ai-first-engineeringInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add affaan-m/ECC --skill ai-first-engineering -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .github/skills && cp -r skills-src/docs/ja-JP/skills/ai-first-engineering .github/skills/ai-first-engineering && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "ai-first-engineering" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/ai-first-engineering into .github/skills/ai-first-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ai-first-engineering", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add affaan-m/ECC --skill ai-first-engineering -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install affaan-m/ECC ai-first-engineering --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/docs/ja-JP/skills/ai-first-engineering .opencode/skills/ai-first-engineering && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "ai-first-engineering" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/ai-first-engineering into .opencode/skills/ai-first-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ai-first-engineering", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
ai-first-engineering- GitHub stars
- 276k
- Token cost
- ~182 tokens
- SKILL.md length
- 39 words
- Files
- 1
- Skills in repo
- 683
- Repo updated
- First seen
- Licence
- MIT
At a glance
AI エージェントが大量の実装出力を生成するチームのためのエンジニアリング運用モデル. An agent skill from affaan-m/ECC.
- Works in 3 steps: 計画の品質はタイピングスピードより重要。 → 評価のカバレッジは個人的な自信より重要。 → レビューの焦点は構文からシステムの動作へ。
- SKILL.md covers プロセスの変化, アーキテクチャ要件, AI ファーストチームでのコードレビュー and 採用と評価シグナル, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
AI First Engineering is an agent skill from affaan-m/ECC. AI エージェントが大量の実装出力を生成するチームのためのエンジニアリング運用モデル。
Its SKILL.md is about 180 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
- “/ai-first-engineering”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- 計画の品質はタイピングスピードより重要。
- 評価のカバレッジは個人的な自信より重要。
- レビューの焦点は構文からシステムの動作へ。
What it can do on your machine
Read from SKILL.md and the folder at commit 4eb71d9. 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.
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
AI First Engineering loads about 182 tokens when it runs. Until then it costs about 16 tokens; SKILL.md has 39 words of instructions outside code blocks.
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 4eb71d9, republished under its MIT licence (© affaan-m). 39 words, ~182 tokens.
Download SKILL.mdSave it as
.claude/skills/ai-first-engineering/SKILL.md (or your agent's skills folder).- name
- ai-first-engineering
- description
- AI エージェントが大量の実装出力を生成するチームのためのエンジニアリング運用モデル。
- origin
- ECC
AI ファーストエンジニアリング
AI 支援コード生成でリリースするチームのプロセス、レビュー、アーキテクチャを設計する際にこのスキルを使用します。
プロセスの変化
- 計画の品質はタイピングスピードより重要。
- 評価のカバレッジは個人的な自信より重要。
- レビューの焦点は構文からシステムの動作へ。
アーキテクチャ要件
エージェントフレンドリーなアーキテクチャを優先する：
- 明示的な境界
- 安定したコントラクト
- 型付きインターフェース
- 決定論的なテスト
隠れた慣習に広がる暗黙の動作を避ける。
AI ファーストチームでのコードレビュー
レビュー対象：
- 動作のリグレッション
- セキュリティの前提
- データの整合性
- 障害処理
- ロールアウトの安全性
自動化によって既にカバーされているスタイルの問題に費やす時間を最小化する。
採用と評価シグナル
AI ファーストの強いエンジニア：
- 曖昧な作業を明確に分解する
- 測定可能な受け入れ基準を定義する
- 高シグナルのプロンプトと評価を生成する
- 納期プレッシャー下でリスクコントロールを強制する
テスト標準
生成されたコードのテストバーを引き上げる：
- 操作されたドメインに対する必須のリグレッションカバレッジ
- 明示的なエッジケースのアサーション
- インターフェース境界の統合チェック
© 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/ai-first-engineering of affaan-m/ECC.
Open the folder on GitHubat commit 4eb71d9
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Questions about AI First Engineering
What does AI First Engineering do?
AI エージェントが大量の実装出力を生成するチームのためのエンジニアリング運用モデル. An agent skill from affaan-m/ECC. AI First Engineering is an agent skill from affaan-m/ECC.
How do I install AI First Engineering in Claude Code?
Run `npx skills add affaan-m/ECC --skill ai-first-engineering -a claude-code`. Or copy the skill folder (docs/ja-JP/skills/ai-first-engineering in affaan-m/ECC) into .claude/skills/ai-first-engineering in your project. Claude Code loads it when a task matches its description.
How do I install AI First Engineering in Codex?
Run `npx skills add affaan-m/ECC --skill ai-first-engineering -a codex`. Or copy the skill folder (docs/ja-JP/skills/ai-first-engineering in affaan-m/ECC) into .agents/skills/ai-first-engineering in your project. Codex loads it when a task matches its description.
Can I use AI First Engineering 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 ai-first-engineering -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ai-first-engineering, .gemini/skills/ai-first-engineering, .github/skills/ai-first-engineering and .opencode/skills/ai-first-engineering in your project.
What does AI First Engineering need to run?
SKILL.md names no scripts, command-line tools or credentials: AI First Engineering is instructions for the agent only.
Does AI First Engineering 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 AI First Engineering 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 AI First Engineering use?
AI First Engineering 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 AI First Engineering use?
About 182 tokens (SKILL.md is roughly 728 characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Who maintains AI First Engineering?
affaan-m (a GitHub user) maintains it in affaan-m/ECC, which has 276,111 GitHub stars. The repository holds 683 skills in this directory. The repository was last updated on October 10, 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.