Claude Code Agent Development
anthropics/claude-plugins-official
Explains how to write agents for Claude Code plugins: the markdown file with YAML frontmatter, trigger descriptions, model and color settings, and system prompt design.
原始人スタイル subagent への委譲判断ガイド。genshijin-investigator (コード位置特定)、 genshijin-builder (1-2ファイル編集)、genshijin-reviewer (diff レビュー) を inline作業 or vanilla Explore の代わりにスポーンするタイミングを示す。subagent 出力は原始人圧縮 →…
Install Genshijin Crew
$ npx skills add InterfaceX-co-jp/genshijin --skill genshijin-crew -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install InterfaceX-co-jp/genshijin genshijin-crew --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/InterfaceX-co-jp/genshijin.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/genshijin-crew .claude/skills/genshijin-crew && 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 "genshijin-crew" agent skill from https://github.com/InterfaceX-co-jp/genshijin/tree/main/skills/genshijin-crew into .claude/skills/genshijin-crew/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "genshijin-crew", 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/InterfaceX-co-jp/genshijin/tree/main/skills/genshijin-crewType 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 InterfaceX-co-jp/genshijin --skill genshijin-crew -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install InterfaceX-co-jp/genshijin genshijin-crew --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/InterfaceX-co-jp/genshijin.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/genshijin-crew .agents/skills/genshijin-crew && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "genshijin-crew" agent skill from https://github.com/InterfaceX-co-jp/genshijin/tree/main/skills/genshijin-crew into .agents/skills/genshijin-crew/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "genshijin-crew", 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 InterfaceX-co-jp/genshijin --skill genshijin-crew -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install InterfaceX-co-jp/genshijin genshijin-crew --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/InterfaceX-co-jp/genshijin.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/genshijin-crew .cursor/skills/genshijin-crew && 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 "genshijin-crew" agent skill from https://github.com/InterfaceX-co-jp/genshijin/tree/main/skills/genshijin-crew into .cursor/skills/genshijin-crew/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "genshijin-crew", 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/InterfaceX-co-jp/genshijin.git --path skills/genshijin-crew--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 InterfaceX-co-jp/genshijin --skill genshijin-crew -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install InterfaceX-co-jp/genshijin genshijin-crew --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/InterfaceX-co-jp/genshijin.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/genshijin-crew .gemini/skills/genshijin-crew && 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 "genshijin-crew" agent skill from https://github.com/InterfaceX-co-jp/genshijin/tree/main/skills/genshijin-crew into .gemini/skills/genshijin-crew/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "genshijin-crew", 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 InterfaceX-co-jp/genshijin genshijin-crewInstalls 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 InterfaceX-co-jp/genshijin --skill genshijin-crew -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/InterfaceX-co-jp/genshijin.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/genshijin-crew .github/skills/genshijin-crew && 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 "genshijin-crew" agent skill from https://github.com/InterfaceX-co-jp/genshijin/tree/main/skills/genshijin-crew into .github/skills/genshijin-crew/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "genshijin-crew", 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 InterfaceX-co-jp/genshijin --skill genshijin-crew -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install InterfaceX-co-jp/genshijin genshijin-crew --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/InterfaceX-co-jp/genshijin.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/genshijin-crew .opencode/skills/genshijin-crew && 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 "genshijin-crew" agent skill from https://github.com/InterfaceX-co-jp/genshijin/tree/main/skills/genshijin-crew into .opencode/skills/genshijin-crew/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "genshijin-crew", 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
genshijin-crew- GitHub stars
- 332
- Used in
- 1 other repo
- Token cost
- ~648 tokens
- SKILL.md length
- 168 words
- Files
- 1
- Skills in repo
- 6
- Repo updated
- First seen
- Licence
- MIT
At a glance
原始人スタイル subagent への委譲判断ガイド。genshijin-investigator (コード位置特定)、 genshijin-builder (1-2ファイル編集)、genshijin-reviewer (diff レビュー) を inline作業 or vanilla Explore の代わりにスポーンするタイミングを示す。subagent 出力は原始人圧縮 →…
- Works in 3 steps: genshijin-investigator で site list 取得 → 主スレッドが1-2 site選び genshijin-builder にパス渡す → genshijin-reviewer が diff 監査
- Tasks that involve Subagents
- SKILL.md covers genshijin-crew vs 代替の使い分け, なぜ存在するか (実利), 出力契約 and チェイニングパターン, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Genshijin Crew is an agent skill from InterfaceX-co-jp/genshijin. 原始人スタイル subagent への委譲判断ガイド。genshijin-investigator (コード位置特定)、 genshijin-builder (1-2ファイル編集)、genshijin-reviewer (diff レビュー) を inline作業 or vanilla Explore の代わりにスポーンするタイミングを示す。subagent 出力は原始人圧縮 → 主コンテキストに戻る tool-result が約60%縮小 → 長セッション持続。 Trigger: 「subagent 委譲」「genshijin-crew 使用」「investigator/builder/reviewer 起動」「コンテキスト節約」「圧縮 agent 出力」。
Its SKILL.md is about 650 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 Agent Workflows, covering Subagents. The repository describes itself as: genshijin 原始人 🗿| Claude Code / Codex等AIエージェント 向け超圧縮コミュニケーションスキル。caveman の日本語版をベースに、日本語特有の冗長表現に最適化。 The licence is MIT.
When your agent uses it
- Tasks that involve Subagents
Example prompts
- “/genshijin-crew”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- genshijin-investigator で site list 取得
- 主スレッドが1-2 site選び genshijin-builder にパス渡す
- genshijin-reviewer が diff 監査
What it can do on your machine
Read from SKILL.md and the folder at commit 968d3c4. 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
Genshijin Crew loads about 648 tokens when it runs. Until then it costs about 89 tokens; SKILL.md has 168 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 InterfaceX-co-jp/genshijin at commit 968d3c4, republished under its MIT licence (© InterfaceX-co-jp). 168 words, ~648 tokens.
Download SKILL.mdSave it as
.claude/skills/genshijin-crew/SKILL.md (or your agent's skills folder).- name
- genshijin-crew
- description
- 原始人スタイル subagent への委譲判断ガイド。`genshijin-investigator` (コード位置特定)、 `genshijin-builder` (1-2ファイル編集)、`genshijin-reviewer` (diff レビュー) を inline作業 or vanilla `Explore` の代わりにスポーンするタイミングを示す。subagent 出力は原始人圧縮 → 主コンテキストに戻る tool-result が約60%縮小 → 長セッション持続。 Trigger: 「subagent 委譲」「genshijin-crew 使用」「investigator/builder/reviewer 起動」「コンテキスト節約」「圧縮 agent 出力」。
genshijin-crew = 原始人形式で出力する3 subagent preset。役割は Anthropic デフォルト (Explore、編集系 agent、reviewer) と同じ。差分は返ってくる tool-result が圧縮済 → 主コンテキスト消費が委譲毎に縮む。
genshijin-crew vs 代替の使い分け
| タスク | 使用 |
|---|---|
| 「Xの定義どこ / Yを呼ぶ箇所 / Zの全用法」 | genshijin-investigator |
| 同上 + アーキテクチャ解説/提案も欲しい | Explore (vanilla) |
| Surgical編集、≤2ファイル、スコープ明確 | genshijin-builder |
| 新機能 / 3+ファイル / cross-cutting refactor | 主スレッド or feature-dev:code-architect |
| Diff/branch/file の bug レビュー | genshijin-reviewer |
| rationale + alternatives 付き深いコードレビュー | Code Reviewer (vanilla) |
| 1行回答済の確実な内容 | 主スレッド、subagent不要 |
判断基準: subagent 出力を1/3トークンで欲しいなら genshijin-crew、散文で欲しいなら vanilla。
なぜ存在するか (実利)
Subagent tool-result は主コンテキストに verbatim 注入される。Vanilla Explore が散文2k tokens 返すと毎回主コンテキスト2k消費。同じ発見が genshijin-investigator だと約700 tokens。1セッション20委譲で context exhaustion vs タスク完了の差。
出力契約
主スレッドが agent 別に依拠できる形式:
genshijin-investigator
<Header>:
- path:line — `symbol` — short note
集計: <counts>。or No match. 必ずファイルパス先頭、行番号付、シンボルはバッククォート。path:\d+ で grep可能。
genshijin-builder
<path:line-range> — <change ≤10語>。
verified: <re-read OK | mismatch @ path:line>。or 以下のいずれか: too-big. / needs-confirm. / ambiguous. / regressed. (terminal first token)。
genshijin-reviewer
path:line: <emoji> <severity>: <問題>. <修正>.
totals: N🔴 N🟡 N🔵 N❓or No issues. ファイル → 行昇順。
チェイニングパターン
位置特定 → 修正 → 検証 (最頻):
genshijin-investigatorで site list 取得- 主スレッドが1-2 site選び
genshijin-builderにパス渡す genshijin-reviewerが diff 監査
並列スカウト (調査が広い時):
1メッセージで genshijin-investigator 2-3個並列起動 (異なる角度: defs vs callers vs tests)。主スレッドで集約。
単発編集 (sit既知時):
investigator スキップ。genshijin-builder に直接 path:line 渡す。
禁止事項
- ファイル未特定で
genshijin-builder使用禁止。先に investigator 起動 → でないと主スレッドがコンテキスト渡しでトークン消費。 - 5ファイル refactor で
genshijin-investigator → genshijin-builderチェーン禁止。Builder はtoo-big.返却 → ターン浪費。 genshijin-reviewerに「全般フィードバック」依頼禁止 → findings のみ返却、アーキテクチャ意見なし。それ用はCode Reviewer。- 散文期待禁止。genshijin-crew 出力は構造化、時に cryptic。人間が直読する場合は主スレッドが言換え。
自動解除 (継承)
Subagent はセキュリティ警告・取消不可操作の確認・fragment 曖昧で誤読リスクある出力で原始人 → 通常日本語に切替。該当部分後復帰。
© InterfaceX-co-jp, 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 skills/genshijin-crew of InterfaceX-co-jp/genshijin.
Open the folder on GitHubat commit 968d3c4
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in InterfaceX-co-jp/genshijin, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Genshijin Crew 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Genshijin Crew this skillInterfaceX-co-jp/genshijin | 332 | 1 repos | ~648 | Automated safety check: Pass | MIT | |
| Claude Code Agent Developmentanthropics/claude-plugins-official | 38k | 7 repos | ~2.8k | Automated safety check: Pass | Apache-2.0 | |
| Subagent Driven DevelopmentAsvarox/allkaraoke | 261 | 38 repos | ~1.2k | Automated safety check: Pass | None | |
| Dispatching Parallel Agentsultralisp/ultralisp | 258 | 41 repos | ~1.5k | Automated safety check: Pass | None | |
| Reflect on Session Learningscursor/plugins | 11k | 5 repos | ~1.2k | Automated safety check: Pass | None | |
| Paseo Advisor Second Opiniongetpaseo/paseo | 20k | 1 repos | ~756 | Automated safety check: Pass | Custom licence |
Similar skills
- Official
Subagent Driven Development
Asvarox/allkaraoke
A skill your agent uses when executing implementation plans with independent tasks in the current session
Dispatching Parallel Agents
ultralisp/ultralisp
A skill your agent uses when facing 2+ independent tasks that can be worked on without shared state or sequential dependencies
- Official
Reflect on Session Learnings
cursor/plugins
Starts three parallel reviewer subagents over the current conversation transcript, then turns their findings into concrete edits to existing skills.
Paseo Advisor Second Opinion
getpaseo/paseo
Launches one separate agent through Paseo to give a second opinion on the current task, with a self-contained briefing and no permission to edit files.
Task Observer
rebelytics/one-skill-to-rule-them-all
Monitors task execution for skill improvement opportunities.
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Genshijin Review
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超圧縮PRレビューコメント。1行1指摘: 位置・問題・修正。前置き削除、シグナル優先. An agent skill from InterfaceX-co-jp/genshijin.
Genshijin Stats
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現セッションのリアルトークン使用量と推定削減量を表示。Claude Code セッションログから直接読込 — AI 推定なし。
Related
Categories
Questions about Genshijin Crew
What does Genshijin Crew do?
原始人スタイル subagent への委譲判断ガイド。genshijin-investigator (コード位置特定)、 genshijin-builder (1-2ファイル編集)、genshijin-reviewer (diff レビュー) を inline作業 or vanilla Explore の代わりにスポーンするタイミングを示す。subagent 出力は原始人圧縮 →…. Genshijin Crew is an agent skill from InterfaceX-co-jp/genshijin.
When should I use Genshijin Crew?
Genshijin Crew fits situations like: tasks that involve Subagents.
How do I install Genshijin Crew in Claude Code?
Run `npx skills add InterfaceX-co-jp/genshijin --skill genshijin-crew -a claude-code`. Or copy the skill folder (skills/genshijin-crew in InterfaceX-co-jp/genshijin) into .claude/skills/genshijin-crew in your project. Claude Code loads it when a task matches its description.
How do I install Genshijin Crew in Codex?
Run `npx skills add InterfaceX-co-jp/genshijin --skill genshijin-crew -a codex`. Or copy the skill folder (skills/genshijin-crew in InterfaceX-co-jp/genshijin) into .agents/skills/genshijin-crew in your project. Codex loads it when a task matches its description.
Can I use Genshijin Crew 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 InterfaceX-co-jp/genshijin --skill genshijin-crew -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/genshijin-crew, .gemini/skills/genshijin-crew, .github/skills/genshijin-crew and .opencode/skills/genshijin-crew in your project.
What does Genshijin Crew need to run?
SKILL.md names no scripts, command-line tools or credentials: Genshijin Crew is instructions for the agent only.
Does Genshijin Crew 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 Genshijin Crew 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 Genshijin Crew use?
Genshijin Crew 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 Genshijin Crew use?
About 648 tokens (SKILL.md is roughly 2.6k 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 Genshijin Crew?
Skills that share tags, products or a category with Genshijin Crew: Claude Code Agent Development (anthropics/claude-plugins-official, 38k stars), Subagent Driven Development (Asvarox/allkaraoke, 261 stars), Dispatching Parallel Agents (ultralisp/ultralisp, 258 stars) and Reflect on Session Learnings (cursor/plugins, 11k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Genshijin Crew?
InterfaceX-co-jp (a GitHub organization) maintains it in InterfaceX-co-jp/genshijin, which has 332 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on August 15, 2026.
Source: InterfaceX-co-jp/genshijin on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.