Meta Open-Sources Astryx: An Agent-Ready React Design System With 150+ Accessible Components, Seven Themes, and a CLI

Short summary

Meta has open-sourced Astryx, the React and StyleX design system used internally across 13,000+ apps for eight years. It includes 150+ accessible components, seven themes, dark mode, templates, and an agent-ready CLI under the MIT license. React 19+ is required.

• •Meta open-sources Astryx, its internal React/StyleX design system used across 13,000+ apps
• •Ships with 150+ accessible components, 7 themes, dark mode, templates, and an agent-ready CLI
• •MIT-licensed; requires React 19+

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