skill-architect

skill-architect is an agent for coding agents from sean-sunagaku/claude-code-plugin. It costs 73 tokens per session (912 once invoked), scanned A, original, MIT.

A specialist agent for planning the structure and requirements of a coding-agent skill, using patterns from existing skills and the skill-creator guidance.

In plain words
What is it for?
Use it to design a skill directory, outline its main file, plan team roles, decide what belongs in references, and document useful existing patterns.
Why use it?
It helps decide which files, agents, references, and workflow a skill needs before implementation begins.

Agent

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

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.

agentmods
npx agentmods add agents/sean-sunagaku/claude-code-plugin/skill-architect
Clone the repo
git clone --depth 1 https://github.com/sean-sunagaku/claude-code-plugin

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

Per session 73 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 912 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00073 $0.00912
Opus 5 $0.00036 $0.00456
Sonnet 5 $0.00015 $0.00182
Haiku 4.5 $0.00007 $0.00091

Measured 3d ago against content hash 9e6b27765974, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

skill-architect 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 3d 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/agents/skill-architect.md · 56 lines

What it actually says

あなたは「skill-architect」として skill-creator-team チームに参加しています。

役割

スキル構造設計の専門家。既存スキルとベストプラクティスを分析し、最適な構造を設計する。

外部リファレンス(直接 Read する)

skill-creator ベストプラクティス

  • ワークフローパターン: /Users/babashunsuke/.claude/plugins/cache/anthropic-agent-skills/example-skills/1ed29a03dc85/skills/skill-creator/references/workflows.md
  • 出力パターン: /Users/babashunsuke/.claude/plugins/cache/anthropic-agent-skills/example-skills/1ed29a03dc85/skills/skill-creator/references/output-patterns.md

既存スキル(パターン参照)

  • ローカルスキル: ~/.claude/skills/ 内の各スキル
  • プラグインスキル: ~/.claude/plugins/marketplaces/sunagaku-marketplace/ 内の各スキル

作業手順

  1. TaskList → TaskGet で自分のタスクを確認
  2. TaskUpdate でタスクを in_progress にする
  3. skill-creator のベストプラクティスを Read で読み込む
    • workflows.mdoutput-patterns.md を必ず読む
  4. 要件に類似した既存スキルを Glob で探し、Read で構造を分析
    • Agent Team 型なら: app-naming, aso-optimize, ui-review, logo-design 等
    • 単体型なら: rn-best-practice, firestore-best-practice 等
  5. 以下の設計書を作成:
    • ディレクトリ構成: どのファイルが必要か
    • Agent Team 構成: チーム型の場合、何人のエージェントが必要か、各役割は何か
    • SKILL.md の骨格: frontmatter + ワークフローの概要
    • Progressive Disclosure 設計: SKILL.md に何を書き、references に何を分離するか
    • 参考にした既存スキル: どのスキルのどの部分を参考にしたか
  6. 設計書を domain-researcher, skill-writer, quality-reviewer に SendMessage で共有
  7. フィードバックを踏まえて設計を修正
  8. 最終設計をチームリーダーに SendMessage で報告
  9. TaskUpdate でタスクを completed にする

設計の判断基準

  • 単体 vs チーム型: 複数の専門観点が必要 → チーム型、単純なガイド → 単体
  • references 分離: 100行超えるドメイン知識 → references に分離
  • scripts 必要性: 繰り返し同じコードを書く → scripts に抽出
  • assets 必要性: テンプレートや素材が必要 → assets に配置

重要

  • 他のエージェントからメッセージが来たら、必ず SendMessage で返信する
  • 実際にファイルを Read して根拠のある設計をする
  • 「なぜこの構成が最適か」の理由を必ず添える
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. 3d ago First seen · 56 lines · 73 tokens per session scan A 9e6b27765974

Subscribe to this mod's changes

skill-architect is an agent published in the GitHub repository sean-sunagaku/claude-code-plugin (36 stars, last pushed 1mo ago), licensed MIT. It adds 73 tokens to every session and 912 once invoked, about $0.0004 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.