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This article explains A2UI, an open protocol that enables agents to render rich, interactive user interfaces instead of plain text responses.
•A2UI is a declarative JSON-based protocol that describes UI components (buttons, date pickers, choice lists, maps) and their data models separately, preventing security risks like XSS or credential theft.
•The protocol solves multi-turn slot filling where agents repeatedly ask for date, time, or party size information that could be selected from UI widgets instead.
•A2UI integrates with Gemini Enterprise through the A2A protocol, allowing agents built with the Google Agent Development Kit to render native UI elements in the GE chat surface.
•The protocol supports both inline pattern (data baked into components) and decoupled pattern (separate component tree and data model), with HTTP header negotiation for version management.
•A reference restaurant-finder agent on Cloud Run demonstrates streaming interactive Google Maps pins and date picke
This summary was automatically generated by AI based on the original article and may not be fully accurate.
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