Anthropic wrote a 32-page guide to building Claude skills.



This is a AI post classified by Jev as MCP & agent skills (a tutorial), kept by the AI Radar because it carries real work, not commentary.
Anthropic wrote a 32-page guide to building Claude skills. These 6 rules decide whether your skill loads or not: 1. The file has to be named SKILL.md exactly → skill.md and SKILL.MD don't count 2. Folder name in kebab-case → no spaces, no underscores, no capitals. notion-project-setup, not Notion_Project_Setup 3. Description says 2 things → what the skill does, and when Claude should use it. Skip the second half and it never fires 4. Description under 1,024 characters → longer ones get cut off when several skills load at once 5. No angle brackets in the frontmatter → < and > are block
Posted by God of Prompt (14.6k followers) 1 days ago · 12 likes · 1.1k views · view the original post on X. Kept by the AI Radar as MCP & agent skills.
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