
Meta Releases Astryx, an Open-Source React Design System Built for Human and AI Developers
Meta released Astryx, an open-source React-based design system that is now in Beta. The system pairs StyleX styling with a CSS-variable theme cascade and includes a Command Line Interface (CLI) and Model Context Protocol (MCP) server for AI agents to scaffold and document user interfaces. Released under the MIT license, the codebase is written primarily in TypeScript and has been production-tested inside Meta for eight years.



