Build an A2UI mini-app end to end: run Google’s agent + client, then generate React UIs from Gemini using a2ui-bridge and Mantine.

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A2UI is Google's protocol that enables AI agents to generate interactive user interfaces on demand using declarative JSON schemas instead of chat bubbles. The guide walks through building a complete A2UI mini-app: setting up Google's official agent with Gemini, running the client, then implementing a custom React version using a2ui-bridge and Mantine components. The protocol treats UI as structured data, allowing agents to send JSON describing components like forms, buttons, and date pickers that get rendered natively by the client.

Is A2UI the Telegram Mini App of AI?

The core idea behind A2UI: Declarative UI, not generated code

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