A2UI Launched: Full CopilotKit support at launch!

A2UI Launched: CopilotKit has partnered with Google to deliver full support in both CopilotKit and AG-UI!

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Updates - Dec 15, 2025

A2UI Launches with CopilotKit and AG-UI support

CopilotKit launches with full A2UI compatibility as a Google launch partner

A2UI Launch — Full Compatibility

CopilotKit has been working closely with Google on A2A and A2UI integrations, and is proud to be a launch partner for A2UI.

What is A2UI?

A2UI (Agent-to-UI) is Google's declarative, LLM-friendly generative UI specification. It defines what to render and how to structure agent responses visually — enabling agents to produce rich, interactive UI components that can be rendered across different platforms and frameworks.

CopilotKit provides zero-day support for A2UI, meaning you can start using A2UI widgets in your CopilotKit-powered applications immediately.

  • Generative UI Specs Overview
  • More about A2UI
  • A2A Protocol

Get Started

Use the A2UI Quickstart to see A2UI in action with CopilotKit!

A2UI Composer

Check out the A2UI Composer (built by CopilotKit engineers), which you can use to:

  • Create custom A2UI widgets visually
  • Browse and find existing widgets
  • Test widgets before integrating them into your app
A2UI Composer
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Recent Updates - Dec 15, 2025
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A2UI Launch — Full Compatibility
What is A2UI?
Get Started
A2UI Composer