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Knowledge mapAre AG-UI and A2UI the same layer?External protocol

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Are AG-UI and A2UI the same layer?

Agent–application event exchange differs from interface description.

AG-UI is an event protocol between agents and user-facing applications. It concerns the exchange of messages, state changes and interactions. Despite similar names, its main responsibility differs from A2UI; its introduction describes them as complementary. Overview

In a hypothetical application, progress updates and user responses concern the interaction channel. Expressing the form carried by an update concerns interface description.

The event model distinguishes messages, tool calls and state events. Examine those contracts instead of assuming that “real-time” settles every synchronization question. Event model

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Why can AG-UI and A2UI be discussed within one system?

They focus on different boundaries: agent–application exchange and declarative interface content.

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