Anthropic's official skills library: Word, PDF, PowerPoint and Excel skills, design skills, and examples for writing your own.
npx skills add anthropics/skillsQuick install assumes the standard layout; the README has the final word. Install guide
Hoist and his crew track this board every day. At MixinVisuals they do the same kind of work for small businesses: scheduling, inboxes, inventory, invoices, built around how your shop already runs.