This does exactly what it says: pulls Claude Code skills from GitHub repos, zip files, or direct URLs and drops them into your project's skills directory. It handles the annoying stuff like sparse checkouts for monorepos, validates that each skill has proper SKILL.md formatting, and works with both official Anthropic skills and community repos. The unified download command auto-detects source types, so you don't need to remember different scripts for different formats. Honestly most useful when you're setting up a new project or workflow and want to quickly grab a handful of skills without manually cloning and copying folders around.
npx skills add https://github.com/nicepkg/ai-workflow --skill skill-downloader