If you're building skills for Claude, this is your meta-tool. It walks through the complete creation process: understanding the progressive disclosure model (metadata loads always, SKILL.md on trigger, resources as needed), matching freedom levels to task fragility, and the six-step workflow from planning to iteration. The guidance on keeping SKILL.md under 500 lines and writing trigger-focused descriptions is genuinely useful. What's smart here is that it practices what it preaches, being concise by assuming you already know Claude basics. Essentially the official playbook from the Dify team, now packaged as a skill itself.
npx skills add https://github.com/langgenius/dify --skill skill-creator