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 →Validate whether a skill can be executed successfully by a minimally informed subagent. Use when the user wants to test a skill by giving a subagent only a minimal invocation, such as the skill name plus a single artifact like a link, file, or short prompt, and then grade whether the subagent actually performed the skill rather than merely describing it.