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 →Fetch web pages and extract readable content for AI use. Use when reading, summarizing, or crawling a specific URL or small set of URLs. Prefer low-friction URL-to-Markdown services first, then fall back to browser-based retrieval, search snippets, or cached/indexed copies when sites are protected by Cloudflare or similar bot checks.