A2UI is just a data spec: rendering custom approval UIs in Gemini Enterprise from a Go API

rseroter · x · 2026-08-26

The author points out that the Agent to UI (A2UI) standard is just a data spec — you can apply it to anything, not only agents.

As a demo, he built a Go API with A2UI-compatible endpoints, registered it as an "A2A agent" in Google Cloud's Gemini Enterprise, and got a custom approval UI rendered directly inside the chat interface.

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