Agent skill

Ck

by affaan-m in affaan-m/ECC

Claude Codeの永続的なプロジェクト単位のメモリ。セッション開始時にプロジェクトコンテキストを自動読み込み、gitアクティビティでセッションを追跡し、ネイティブメモリに書き込みます。コマンドは決定的なNode.jsスクリプトを実行します — 動作はモデルバージョン間で一貫しています。

MITAuto-check passedDevelopment

Install Ck

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

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

GitHub CLI
$ gh skill install affaan-m/ECC ck --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/ck .claude/skills/ck && 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
ck
GitHub stars
276k
Token cost
~566 tokens
SKILL.md length
41 words
Files
1
Skills in repo
683
Repo updated
First seen
Licence
MIT

At a glance

Claude Codeの永続的なプロジェクト単位のメモリ。セッション開始時にプロジェクトコンテキストを自動読み込み、gitアクティビティでセッションを追跡し、ネイティブメモリに書き込みます。コマンドは決定的なNode.jsスクリプトを実行します — 動作はモデルバージョン間で一貫しています。

  • Development work in your project
  • SKILL.md covers データレイアウト, コマンド and 使用時期
  • Calls node

What it does

Ck is an agent skill from affaan-m/ECC. Claude Codeの永続的なプロジェクト単位のメモリ。セッション開始時にプロジェクトコンテキストを自動読み込み、gitアクティビティでセッションを追跡し、ネイティブメモリに書き込みます。コマンドは決定的なNode.jsスクリプトを実行します — 動作はモデルバージョン間で一貫しています。

Its SKILL.md is about 570 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development. It works with Node.js and Git. 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.

When your agent uses it

  • Development work in your project

Example prompts

  • “/ck”

Requirements

  • Node.js

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

    Shell commands in SKILL.md call:

    • node

    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

Ck loads about 566 tokens when it runs. Until then it costs about 37 tokens; SKILL.md has 41 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~37
When it runs · the whole SKILL.md, loaded when a task matches
~566

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). 41 words, ~566 tokens.

Download SKILL.mdSave it as .claude/skills/ck/SKILL.md (or your agent's skills folder).
name
ck
description
Claude Codeの永続的なプロジェクト単位のメモリ。セッション開始時にプロジェクトコンテキストを自動読み込み、gitアクティビティでセッションを追跡し、ネイティブメモリに書き込みます。コマンドは決定的なNode.jsスクリプトを実行します — 動作はモデルバージョン間で一貫しています。
origin
community
version
2.0.0
author
sreedhargs89
repo
https://github.com/sreedhargs89/context-keeper

ck — コンテキスト キーパー

あなたはコンテキストキーパー アシスタントです。ユーザーが/ck:*コマンドを呼び出すと、対応するNode.jsスクリプトを実行し、その標準出力をユーザーに逐語的に提示します。スクリプトは以下にあります:~/.claude/skills/ck/commands/(~を$HOMEで展開)。


データレイアウト

~/.claude/ck/
├── projects.json              ← path → {name, contextDir, lastUpdated}
└── contexts/<name>/
    ├── context.json           ← 真実のソース(構造化JSON、v2)
    └── CONTEXT.md             ← 生成されたビュー — 手動編集しない

コマンド

/ck:init — プロジェクトを登録
bash
node "$HOME/.claude/skills/ck/commands/init.mjs"

スクリプトは自動検出情報でJSONを出力します。それを確認ドラフトとして提示:

ここで見つけたものです — 何か確認または編集してください:
Project:     <name>
Description: <description>
Stack:       <stack>
Goal:        <goal>
Do-nots:     <constraints or "None">
Repo:        <repo or "none">

ユーザーの承認を待つ。編集を適用。次に確認されたJSONをsave.mjsにパイプ:

bash
echo '<confirmed-json>' | node "$HOME/.claude/skills/ck/commands/save.mjs" --init

確認されたJSONスキーマ:{"name":"...","path":"...","description":"...","stack":["..."],"goal":"...","constraints":["..."],"repo":"..." }


/ck:save — セッション状態を保存

これはLLM分析を必要とする唯一のコマンドです。 現在の会話を分析:

  • summary:1文、最大10単語、何が達成されたか
  • leftOff:アクティブに作業していたもの(特定のファイル/機能/バグ)
  • nextSteps:具体的な次のステップの順序配列
  • decisions:このセッション中に行われた決定の配列({what, why})
  • blockers:現在のブロッカーの配列(なければ空配列)
  • goal:このセッションで変更された場合のみ更新目標文字列、それ以外は省略

ユーザーに草稿概要を表示:"Session: '<summary>' — これを保存しますか?(yes / edit)"

確認を待つ。次にsave.mjsにパイプ:

bash
echo '<json>' | node "$HOME/.claude/skills/ck/commands/save.mjs"

JSONスキーマ(正確):{"summary":"...","leftOff":"...","nextSteps":["..."],"decisions":[{"what":"...","why":"..."}],"blockers":["..."]}

スクリプトの標準出力確認を逐語的に表示。


/ck:resume [name|number] — 完全なブリーフィング
bash
node "$HOME/.claude/skills/ck/commands/resume.mjs" [arg]

出力を逐語的に表示。その後、「ここから続けますか?または何か変わったことがありますか?」と尋ねます。

ユーザーが変更を報告 → すぐに/ck:saveを実行。


使用時期

  • 新しいプロジェクトを始める(/ck:init)
  • セッション終了時にコンテキストを保存(/ck:save)
  • 以前のセッションを再開(/ck:resume)
  • プロジェクト履歴を表示(/ck:log)

© 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/ck of affaan-m/ECC.

Open the folder on GitHubat commit 4eb71d9

Compare with similar skills

Ck next to the 5 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.

Ck compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Ck this skillaffaan-m/ECC276k—~566Automated safety check: PassMIT
PR Reviewcdklabs/cdk-nextjs111—~2.4kAutomated safety check: PassApache-2.0
Git Commit Convention7-e1even/learn-agent285—~206Automated safety check: PassMIT
Maafwkqcoxn/MaaPipelineEditor408—~1.1kAutomated safety check: PassMIT
Install Rhomikeyobrien/rho373—~1.6kAutomated safety check: NotesMIT
Nylas Nodejs Releasenylas/nylas-nodejs180—~1.6kAutomated safety check: WarnMIT

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Works with

Categories

Questions about Ck

What does Ck do?

Claude Codeの永続的なプロジェクト単位のメモリ。セッション開始時にプロジェクトコンテキストを自動読み込み、gitアクティビティでセッションを追跡し、ネイティブメモリに書き込みます。コマンドは決定的なNode.jsスクリプトを実行します — 動作はモデルバージョン間で一貫しています。. Ck is an agent skill from affaan-m/ECC.

When should I use Ck?

Ck fits situations like: development work in your project.

How do I install Ck in Claude Code?

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

How do I install Ck in Codex?

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

Can I use Ck 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 ck -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ck, .gemini/skills/ck, .github/skills/ck and .opencode/skills/ck in your project.

What does Ck need to run?

Going by SKILL.md and its folder, Ck needs the command-line tools its instructions call (node). Our summary lists: Node.js.

Does Ck 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 Ck 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 Ck use?

Ck 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 Ck use?

About 566 tokens (SKILL.md is roughly 2.3k 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 Ck?

Skills that share tags, products or a category with Ck: PR Review (cdklabs/cdk-nextjs, 111 stars), Git Commit Convention (7-e1even/learn-agent, 285 stars), Maafw (kqcoxn/MaaPipelineEditor, 408 stars) and Install Rho (mikeyobrien/rho, 373 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Ck?

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.