---
title: "void.design — Parth Kapoor"
description: "Design system that teaches AI coding agents to build fast, accessible sites"
canonical: "https://parthkapoor.me/builds/void-design"
---

# void.design

> Design system that teaches AI coding agents to build fast, accessible sites

void is an open-source design system built for AI coding agents rather than humans: a set of Claude Code skills that encode how well-built websites are made, a Tailwind v4 token system that limits what an agent can reach for, and a CLI that checks the result in a real browser instead of by opinion. It targets the gap where a frontier model can produce a great site after many iterations, but a faster pass tends to look generic, run heavy, and skip SEO.

The workflow is skills, then tokens, then build, then lint, then audit, then ship. Nine Claude Code skills (website, craft, motion, components, inspire, speed, seo, a11y, audit) guide the build, six OKLCH token directions supply the visual system, and the `void` CLI lints source against static rules and audits a live URL for performance, smoothness, accessibility, SEO, GEO (AI-crawler visibility) and design, each scored 0-100.

- Status: shipped
- Language: TypeScript
- Started: Sep 2026
- Shipped: Sep 2026
- License: MIT
- Live: https://void.parthkapoor.me
- Source: https://github.com/parthkapoor-dev/design

## Highlights

- 271 rules total: perf (25), smooth (12), a11y (48), seo (60), geo (41), design (19), plus 66 static lint rules
- Six token directions (precision, terminal, editorial, swiss, warm, instrument), all checked against WCAG AA and APCA
- Bundled Next.js 16 starter scores 100 on perf/smooth/a11y/SEO/GEO under void audit, at 139.9 KB gzip first-load JS
- void lint caught 131 Tailwind v4 `duration-[--x]` classes on a production app that silently compiled to nothing
- Distributed as a Claude Code plugin (`void@void`) installable via `claude plugin marketplace add`

## Stack

- **Language**: TypeScript
- **Runtime & Tooling**: Bun, Chromium (browser-driven audits)
- **Frontend**: Next.js 16, Tailwind CSS v4
- **Distribution**: Claude Code plugin, Claude Code skills

All builds: [https://parthkapoor.me/builds](https://parthkapoor.me/builds.md)