A lightweight design system in skill form. Instead of letting Claude rebuild your button styles from scratch every time, this gives it a consistent set of UI opinions to follow across components. It's from @ibelick's repo and works by advertising itself during planning so the agent pulls in the constraints automatically when building interfaces. Most useful when you're generating lots of small UI pieces and want them to feel like they came from the same design language. Won't replace a full design system, but it's a practical middle ground between total freedom and heavy tooling.
npx skills add https://github.com/nexu-io/open-design --skill ui-skills