skill-creator-team

skill-creator-team is a skill for Claude Code from sean-sunagaku/claude-code-plugin. It costs 240 tokens per session (1,462 once invoked), scanned A, original, MIT.

A skill for designing and creating other coding-agent skills with help from four specialist agents: an architect, researcher, writer, and reviewer.

In plain words
What is it for?
Use it to create a new skill, plan its structure and triggers, improve an existing skill, and validate the resulting files.
Why use it?
It gives you several structured reviews while a skill is being planned and written, reducing the chance of missing requirements or quality checks.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: reads .claude/ paths.

Part of the skill-creator-team plugin — 1 skill, 4 agents shipped together

Good fit Use it to create a new skill, plan its structure and triggers, improve an existing skill, and validate the resulting files.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sean-sunagaku/claude-code-plugin/skill-creator-team
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add sean-sunagaku/claude-code-plugin --skill skill-creator-team
Clone the repo
git clone --depth 1 https://github.com/sean-sunagaku/claude-code-plugin

Made for: Claude Code.

Or install skill-creator-team, the plugin that ships this one along with the rest of its 1 skill, 4 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for skill-creator-team

README.md
[![agentmods](https://agentmods.dev/badge/skills/sean-sunagaku/claude-code-plugin/skill-creator-team.svg)](https://agentmods.dev/skills/sean-sunagaku/claude-code-plugin/skill-creator-team)
Your own site
<a href="https://agentmods.dev/skills/sean-sunagaku/claude-code-plugin/skill-creator-team"><img src="https://agentmods.dev/badge/skills/sean-sunagaku/claude-code-plugin/skill-creator-team.svg" alt="Measured on agentmods" height="20"></a>
Per session 240 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,462 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00240 $0.01462
Opus 5 $0.00120 $0.00731
Sonnet 5 $0.00048 $0.00292
Haiku 4.5 $0.00024 $0.00146

Measured 7d ago against content hash 1e0dff66be09, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

skill-creator-team scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agent-toolkit/skill-creator-team/skills/skill-creator-team/SKILL.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Creator Team

4つの専門エージェントがチームで議論し、高品質なスキルを作成する。

外部リファレンス(直接読み込み)

以下のファイルはコピーではなく、実ファイルを直接 Read して参照する。

skill-creator ベストプラクティス

SKILL_CREATOR_BASE=/Users/babashunsuke/.claude/plugins/cache/anthropic-agent-skills/example-skills/1ed29a03dc85/skills/skill-creator
  • ワークフローパターン: ${SKILL_CREATOR_BASE}/references/workflows.md
  • 出力パターン: ${SKILL_CREATOR_BASE}/references/output-patterns.md
  • 初期化スクリプト: ${SKILL_CREATOR_BASE}/scripts/init_skill.py
  • バリデーション: ${SKILL_CREATOR_BASE}/scripts/quick_validate.py
  • パッケージング: ${SKILL_CREATOR_BASE}/scripts/package_skill.py

既存スキル(パターン参照用)

LOCAL_SKILLS=~/.claude/skills/
PLUGIN_SKILLS=~/.claude/plugins/marketplaces/sunagaku-marketplace/

エージェントはこれらのパスから既存スキルの構造やエージェント定義を Read して参考にする。

ワークフロー

  1. ユーザーからスキル要件をヒアリング
  2. Agent Team を作成し、4エージェントを並列起動
  3. 2〜3ラウンドの設計・議論・フィードバック
  4. スキルファイル一式を ~/.claude/skills/{skill-name}/ に出力
  5. バリデーション実行

Step 1: ヒアリング

以下を確認する(不明ならユーザーに質問):

  • スキルの目的: 何を自動化・支援するスキルか
  • トリガー: どんな言葉でスキルが起動すべきか
  • Agent Team 構成: チームエージェント型か、単体スキルか
  • 参考にすべき既存スキル: 似たパターンの既存スキルがあるか
  • 出力物: レポート、コード、設定ファイル等

Step 2: チーム作成とエージェント起動

TeamCreate で skill-creator-team チームを作成。以下4エージェントを 1つのメッセージで並列に Task ツールで起動する。

name 役割 主な手段
skill-architect 構造設計・要件分析・既存パターン分析 Read, Glob
domain-researcher 対象ドメインのベストプラクティス調査 WebSearch
skill-writer SKILL.md・エージェント定義・リファレンス作成 Read, Write
quality-reviewer 品質レビュー・ベストプラクティス準拠チェック Read, Glob

各エージェントは agents/ ディレクトリにサブエージェントとして定義済み。

タスク作成

TaskCreate で5つのタスクを作成:

  1. skill-architect: 構造設計(既存スキル分析含む)
  2. domain-researcher: 対象ドメインの調査
  3. skill-writer: スキルファイル一式の作成(タスク1,2完了後)
  4. quality-reviewer: 品質レビュー(タスク3完了後)
  5. 最終出力: バリデーション + パッケージング(タスク4完了後)

依存関係:

  • タスク3: addBlockedBy: ["1","2"]
  • タスク4: addBlockedBy: ["3"]
  • タスク5: addBlockedBy: ["4"]

起動設定

subagent_type: "skill-architect"
team_name: "skill-creator-team"
mode: "bypassPermissions"
run_in_background: true

Read the full file on GitHub · 116 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 116 lines · 240 tokens per session scan A 1e0dff66be09

Subscribe to this mod's changes

skill-creator-team is a skill published in the GitHub repository sean-sunagaku/claude-code-plugin (36 stars, last pushed 1mo ago), licensed MIT. It adds 240 tokens to every session and 1,462 once invoked, about $0.0012 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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