Google Releases A2UI Open-Source Protocol Enabling AI Agents to Build Secure User Interfaces Through JSON Specifications

Google launches A2UI, an open-source protocol that revolutionizes AI-generated user interfaces by letting AI agents create secure, cross-platform UIs through JSON specifications instead of executable code, preventing security vulnerabilities while enabling real-time streaming updates across Angular, Flutter, React, and SwiftUI frameworks.

• Google releases A2UI, an open-source protocol that allows AI agents to create user interfaces by sending declarative JSON specifications instead of executable code, enabling secure cross-platform rendering through native components
• The system addresses security concerns by treating UI as data rather than code, with agents only able to reference pre-approved component catalogs controlled by client applications, preventing UI injection attacks and arbitrary script execution
• A2UI supports streaming and progressive rendering across multiple frameworks including Angular, Flutter, React and SwiftUI, allowing agents to incrementally update interfaces in real-time while maintaining consistent branding and accessibility controls