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A2UI PlaygroundbyCopilotKit

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Watch an agent write UI.

A2UI 1.0 is Google's open protocol for agents that answer with UI. The model writes one line per component, and a design system draws it: switch it in the prompt box's + menu and the same answer repaints.

    Enter builds it. Shift and Enter adds a line. While a run is going, Enter queues the prompt.

    Or : write A2UI JSON by hand.

    Gemini Flash writes

    A2UI Express

    The model's lines show here as it writes them, one per component.