When you need to show early stage thinking without committing to polished UI, this generates hand-drawn wireframes on graph paper with marker headlines, hatched chart placeholders, and sticky note annotations. It deliberately stays loose with slight rotations, wobbly lines, and highlighter swipes to signal "still sketching." Ships as a single HTML file with inline CSS and marker style fonts. Good for exploring variants side by side with tabbed layouts, or when a brief explicitly asks for lo-fi, whiteboard style, or sketch mockups. The whole point is making it look unfinished so stakeholders focus on structure instead of arguing about button colors.
npx skills add https://github.com/nexu-io/open-design --skill wireframe-sketch