google/A2UI — Open Protocol for Agent-Driven User Interfaces (13K Stars)

GitHub·high signal

Google's A2UI is an open standard letting agents 'speak UI': agents send declarative JSON component descriptions, clients render using native widgets (React, Flutter, SwiftUI). Security model: agents can only request pre-approved components from a client catalog — no executable code injection. Now integrating with OpenClaw and Google ADK; CopilotKit has published generative-UI examples.