Skills（SKILL.md）は、AIエージェント（Claude Code、Cursor、Codexなど）に特定の能力を追加するための設定ファイルです。
詳しく見る →Use when product work needs clearer framing, prioritization, or communication: clarifying a vague request, evaluating whether a feature is worth doing, comparing options, prioritizing requests, drafting a lightweight spec, building a roadmap, defining metrics, preparing an executive summary, or reviewing outcomes. Best when the user needs a practical recommendation or reusable output, not just frameworks.