In a traditional product team, design guidance often lives across Figma files, component docs, brand notes, and scattered code. A developer can inspect those sources and make judgment calls. An AI coding assistant needs the same context in a form it can read directly.
That is the role of DESIGN.md. It turns the important parts of a design system into text: the color palette, typography scale, spacing rules, layout patterns, component behavior, interaction states, and the principles that explain when to use them.
The format comes from Google Stitch, which introduced DESIGN.md as a practical bridge between visual design and AI-assisted coding. Instead of relying on a prompt to repeat every design rule, the project can keep a durable source of truth beside the code.
In practice, it looks like a technical article about the interface. It describes the product tone, the visual foundation, the reusable pieces, and the constraints that keep screens from drifting apart. A human can skim it. An AI agent can reference it before generating a page, editing a component, or repairing visual inconsistencies.
Every Uiverse Design pack includes a DESIGN.md file alongside pure CSS, a plain HTML preview, metadata, and screenshots. The design guidance stays portable, so teams can use it in React, Vue, Svelte, HTMX, server-rendered apps, or no framework at all.
