Turns vague design requests into structured specs by forcing you to resolve eight dimensions up front: palette, typography, layout, mood, density, accent color, and constraints. You can feed it natural language ("clean dark landing page, Inter font, no animations") and it converts that to I-Lang format, then spits out a DESIGN.md with concrete hex values, spacing tokens, and font specs. Built by analyzing 71 design systems to find the minimum set of decisions you actually need to make before pushing pixels. Useful when you're tired of iterating on "make it feel more professional" and want to lock down the visual system before touching components.
npx skills add https://github.com/nexu-io/open-design --skill design-brief