Astryx

Astryx is an open-source, AI-fluent design system developed by Meta to support both human developers and AI agents. It provides a comprehensive toolkit of over 170 accessible, themeable React components, production-ready templates, and a CLI, all built on React 19 and StyleX.

Astryx is an open-source, AI-fluent design system developed by Meta to support both human developers and AI agents. It provides a comprehensive toolkit of over 170 accessible, themeable React components, production-ready templates, and a CLI, all built on React 19 and StyleX.

• 01AI-fluent architecture for agent-assisted development
• 02170+ accessible and themeable React components
• 03Built on React 19 and StyleX with no styling lock-in
• 04Production-ready templates for common page layouts
• 05CLI support for scaffolding and theme generation
• 06Full support for dark mode and internationalization