Astryx is Meta’s open-source design system built on React and StyleX. It includes accessible components, brand-level themes, templates, dark mode, CLI/MCP documentation, and customization paths so developers and AI agents can build consistent UIs more reliably.

Features
- React and StyleX
- Open-source design system
- Accessible components
- Brand-level themes
- Dark mode and templates
- CLI/MCP agent docs
Use Cases
- Product UI building
- Design-system adoption
- AI-agent UI generation
- Brand theme customization
- React component library
- Enterprise frontend consistency
FAQ
Astryx is Meta’s open-source design system built on React and StyleX. It includes accessible components, brand-level themes, templates, dark mode, CLI/MCP documentation, and customization paths so developers and AI agents can build consistent UIs more reliably. Core capabilities include: React and StyleX, Open-source design system, Accessible components.
Common scenarios include: Product UI building, Design-system adoption, AI-agent UI generation.