Google releases A2UI 1.0, an open protocol for agentic user interfaces

Google published A2UI 1.0 on November 11, 2026, an open protocol that lets AI agents render interactive native screens instead of text, with SDKs, renderers and launch partners including Atlassian and Bloomberg.

Google released version 1.0 of A2UI, an open protocol that lets AI agents respond with interactive native screens instead of plain text, on November 11, 2026, according to the Google Developers Blog.

What's new in A2UI 1.0

Agents describe UI elements, and each app renders them with its own native components
The 1.0 release adds bidirectional function calls for real-time availability checks
Accessibility support and extensibility for additional metadata are now built in
A new A2UI Express inference format uses a compact, Python-style syntax that cuts token usage by up to 3x
Agent SDKs are available for Python, TypeScript and Dart, alongside web renderers for React, Angular and Lit
Cross-platform renderers cover Flutter and SwiftUI, plus Jetpack Compose for Android, currently at v0.9.1 with v1.0 coming soon

What it means for people building with AI

A2UI gives agent builders a standard way to generate rich interactive interfaces instead of plain chat text. Because the protocol works alongside MCP Apps in Claude and Gemini, developers can target one interactive UI layer across multiple agent platforms instead of building separate screens for each one. Early support from named partners signals that agentic UI is becoming a category builders will need to design for.

Availability and launch partners

Google named Atlassian, which is integrating A2UI into Jira, along with Alation, Bloomberg and ByteDance as launch partners; ByteDance built a Lynx renderer for the protocol. With SDKs and renderers already spanning web, mobile and cross-platform frameworks, A2UI is positioned as infrastructure builders can start using now rather than a future roadmap item.

Sources

A2UI 1.0: Build delightful, fast, reliable, agentic experiences (Google Developers Blog, November 11, 2026, official)

Written with AI assistance, strictly from the sources listed above. Before it went live, automated checks verified its dates, sources and every language edition.