A2UI v0.9 announces a framework-agnostic standard for generative user interfaces, enabling AI agents to build UI elements on the fly by drawing from an application's existing components across web, mobile, and other platforms.

The update ships a shared web core library along with an official React renderer and updated renderers for Flutter, Lit, and Angular to support cross-platform integration.

The ecosystem is expanding rapidly with integrations for AG2, A2A 1.0, Vercel’s json-renderer, and Oracle’s Agent Spec, signaling broad interoperability across tools and platforms.

An Agent SDK is introduced to streamline development with Python, with Go and Kotlin versions planned, adding features like client-defined functions, client-server data syncing, and improved error handling.

Early sample applications, including a Personal Health Companion from Rebel App Studio and a Life Goal Simulator from Very Good Ventures, demonstrate practical, real-world uses of A2UI.

Documentation and examples for A2UI are available at A2UI.org to help developers adopt the standard and build compatible interfaces.