ProtocolsOfficial

A2UI 0.9 strengthens catalogs, synchronization and rendering

Google released A2UI 0.9 with shared web-core, an official React renderer and an Agent SDK.

Why it matters

Existing design systems can render agent intent across frontend frameworks.

A closer look

The update adds client functions, data synchronization and modular schemas. The SDK handles version negotiation, catalogs and incremental parsing.

Who this is for

Design-system teams and application developers

Original sources

Revisions & corrections (1)

— Initial source-verified editorial collection

Related events

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A2UI separates model inference syntax from the wire protocol with Express and controlled decisions

On October 27, the Google A2UI team introduced swappable inference formats: a model can emit compact A2UI Express and let the SDK deterministically compile it against a component catalog into standard A2UI messages, while fixed-shape screens can use decision models to select predefined layouts.