# facebook/astryx

An open source design system that's fully customizable and agent ready

Repository: https://github.com/facebook/astryx
Canonical: https://ross.abutalabs.com/products/astryx
Homepage: http://astryx.atmeta.com
Language: TypeScript
License: MIT
License Family: permissive
Last push: 2026-08-27T00:08:51+00:00

## Health v2 (maintenance only)
Score: 82/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 99, longevity 16
- inputs: {"age_days": 236, "days_push": 7, "days_rel": 9, "gap_med": 2, "n_releases_24m": 22}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 12469, forks 1065 (observed 2026-08-28T04:10:59.122211+00:00)

## What it is
Astryx is an open source React design system from Meta offering 150+ accessible components, CSS-custom-property theming, dark mode, templates, and a CLI, built on React 19 and StyleX. It is designed so both humans and AI coding agents can build with the same tooling, including generated agent docs and a typed JSON API behind the CLI.

## Use cases
- build accessible React UIs with pre-built components
- theme a design system to match a brand via CSS custom properties
- override component styles with Tailwind or plain CSS without styling lock-in
- set up a design system using an AI coding assistant
- scaffold pages and generate themes from the CLI
- eject component source to customize deeply

## When to choose
- you are starting a React 19+ app and want a comprehensive, accessible component library
- you need brand-level theming and dark mode without forking components
- you want a design system whose docs and CLI work well with AI agents
- you want to override styles with your existing CSS tooling

## When to avoid
- your project uses React versions earlier than 19
- you need a stable, long-term-supported library rather than a beta
- you are not using React or want a framework-agnostic CSS-only system
- you need Vue, Svelte, or Angular components

## Facets
- artifact type: library
- maturity: active
- function: ui-components, css-framework, cli, theme, templating
- domain: web-development, frontend, web-design, developer-tools, accessibility
- platform: cli, cross-platform
- tags: design-system, react, stylex, theming, agent-ready, ai-coding-tools, storybook, dark-mode, accessibility, codemods, web-server, nodejs

## Member repositories
- facebook/astryx (main) score 82

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:59.122211+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:14:02.047913+00:00, confidence not recorded.
  - readme: https://github.com/facebook/astryx (fetched 2026-08-28T04:10:59.122211+00:00, sha c48f407c0bfa)
  - homepage: http://astryx.atmeta.com (fetched 2026-08-29T08:11:09.659184+00:00, sha 39bff785e4fd)
  - site_page: https://astryx.atmeta.com/docs/getting-started (fetched 2026-08-29T08:11:09.668769+00:00, sha 1b0ca46e83d8)
  - site_page: https://astryx.atmeta.com/docs/cli (fetched 2026-08-29T08:11:09.671230+00:00, sha ca48e9ee8647)
  - site_page: https://astryx.atmeta.com/changelog (fetched 2026-08-29T08:11:09.674216+00:00, sha 6efafb6f6489)
- Data as of 2026-08-30T08:39:29.467469+00:00.