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affaan-m/ECC
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評価ファースト実行、分解、コスト対応モデルルーティングを使用してエージェニックエンジニアとして動作します. An agent skill from affaan-m/ECC.
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Install Agentic Engineering
$ npx skills add affaan-m/ECC --skill agentic-engineering -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install affaan-m/ECC agentic-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/agentic-engineering .claude/skills/agentic-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 "agentic-engineering" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/agentic-engineering into .claude/skills/agentic-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agentic-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/agentic-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 agentic-engineering -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install affaan-m/ECC agentic-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/agentic-engineering .agents/skills/agentic-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 "agentic-engineering" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/agentic-engineering into .agents/skills/agentic-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agentic-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 agentic-engineering -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install affaan-m/ECC agentic-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/agentic-engineering .cursor/skills/agentic-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 "agentic-engineering" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/agentic-engineering into .cursor/skills/agentic-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agentic-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/agentic-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 agentic-engineering -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install affaan-m/ECC agentic-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/agentic-engineering .gemini/skills/agentic-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 "agentic-engineering" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/agentic-engineering into .gemini/skills/agentic-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agentic-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 agentic-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 agentic-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/agentic-engineering .github/skills/agentic-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 "agentic-engineering" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/agentic-engineering into .github/skills/agentic-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agentic-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 agentic-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 agentic-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/agentic-engineering .opencode/skills/agentic-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 "agentic-engineering" agent skill from https://github.com/affaan-m/ECC/tree/main/docs/ja-JP/skills/agentic-engineering into .opencode/skills/agentic-engineering/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agentic-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
agentic-engineering- GitHub stars
- 275k
- Token cost
- ~242 tokens
- SKILL.md length
- 55 words
- Files
- 1
- Skills in repo
- 645
- Repo updated
- First seen
- Licence
- MIT
At a glance
評価ファースト実行、分解、コスト対応モデルルーティングを使用してエージェニックエンジニアとして動作します. An agent skill from affaan-m/ECC.
- Works in 4 steps: 実行前に完了基準を定義する。 → 作業をエージェントサイズの単位に分解する。 → タスクの複雑さによってモデルティアをルーティングする。 → …
- SKILL.md covers 動作原則, 評価ファーストループ, タスク分解 and モデルルーティング, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Agentic Engineering is an agent skill from affaan-m/ECC. 評価ファースト実行、分解、コスト対応モデルルーティングを使用してエージェニックエンジニアとして動作します。
Its SKILL.md is about 240 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
- “/agentic-engineering”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- 実行前に完了基準を定義する。
- 作業をエージェントサイズの単位に分解する。
- タスクの複雑さによってモデルティアをルーティングする。
- 評価とリグレッションチェックで測定する。
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.
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
Agentic Engineering loads about 242 tokens when it runs. Until then it costs about 18 tokens; SKILL.md has 55 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 ef648e0, republished under its MIT licence (© affaan-m). 55 words, ~242 tokens.
Download SKILL.mdSave it as
.claude/skills/agentic-engineering/SKILL.md (or your agent's skills folder).- name
- agentic-engineering
- description
- 評価ファースト実行、分解、コスト対応モデルルーティングを使用してエージェニックエンジニアとして動作します。
- origin
- ECC
エージェニックエンジニアリング
AI エージェントがほとんどの実装作業を行い、人間が品質とリスクのコントロールを強制するエンジニアリングワークフローにこのスキルを使用します。
動作原則
- 実行前に完了基準を定義する。
- 作業をエージェントサイズの単位に分解する。
- タスクの複雑さによってモデルティアをルーティングする。
- 評価とリグレッションチェックで測定する。
評価ファーストループ
- 能力評価とリグレッション評価を定義する。
- ベースラインを実行し、障害シグネチャをキャプチャする。
- 実装を実行する。
- 評価を再実行し、デルタを比較する。
タスク分解
15 分単位ルールを適用する：
- 各単位は独立して検証可能であるべき
- 各単位は単一の主要なリスクを持つべき
- 各単位は明確な完了条件を持つべき
モデルルーティング
- Haiku: 分類、ボイラープレート変換、狭い編集
- Sonnet: 実装とリファクタリング
- Opus: アーキテクチャ、根本原因分析、マルチファイル不変条件
セッション戦略
- 密接に結合した単位にはセッションを継続する。
- 主要なフェーズ移行後は新しいセッションを開始する。
- アクティブなデバッグ中ではなく、マイルストーン完了後にコンパクト化する。
AI 生成コードのレビューフォーカス
優先する：
- 不変条件とエッジケース
- エラー境界
- セキュリティと認証の前提
- 隠れた結合とロールアウトリスク
自動フォーマット/lint がスタイルを既に強制している場合、スタイルのみの不一致にレビューサイクルを無駄にしない。
コスト規律
タスクごとに追跡する：
- モデル
- トークン推定値
- リトライ数
- ウォールクロック時間
- 成功/失敗
低いティアが明確な推論のギャップで失敗した場合のみ、モデルティアをエスカレーションする。
© 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/agentic-engineering of affaan-m/ECC.
Open the folder on GitHubat commit ef648e0
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Questions about Agentic Engineering
What does Agentic Engineering do?
評価ファースト実行、分解、コスト対応モデルルーティングを使用してエージェニックエンジニアとして動作します. An agent skill from affaan-m/ECC. Agentic Engineering is an agent skill from affaan-m/ECC.
How do I install Agentic Engineering in Claude Code?
Run `npx skills add affaan-m/ECC --skill agentic-engineering -a claude-code`. Or copy the skill folder (docs/ja-JP/skills/agentic-engineering in affaan-m/ECC) into .claude/skills/agentic-engineering in your project. Claude Code loads it when a task matches its description.
How do I install Agentic Engineering in Codex?
Run `npx skills add affaan-m/ECC --skill agentic-engineering -a codex`. Or copy the skill folder (docs/ja-JP/skills/agentic-engineering in affaan-m/ECC) into .agents/skills/agentic-engineering in your project. Codex loads it when a task matches its description.
Can I use Agentic 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 agentic-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/agentic-engineering, .gemini/skills/agentic-engineering, .github/skills/agentic-engineering and .opencode/skills/agentic-engineering in your project.
What does Agentic Engineering need to run?
SKILL.md names no scripts, command-line tools or credentials: Agentic Engineering is instructions for the agent only.
Does Agentic 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 Agentic 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 Agentic Engineering use?
Agentic 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 Agentic Engineering use?
About 242 tokens (SKILL.md is roughly 968 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 Agentic Engineering?
affaan-m (a GitHub user) maintains it in affaan-m/ECC, which has 275,023 GitHub stars. The repository holds 645 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.