JsonUI
An agent-driven UI development platform. From a single spec, JsonUI generates native UI, UI tests, and docs for iOS (SwiftUI / UIKit), Android (Jetpack Compose / XML), and Web (React + Tailwind).
Built for a world where AI agents write UI code. Rather than asking the AI to follow rules, JsonUI is designed so rules can't be broken — through specialized agents, CLI tools, and a spec-first workflow that structurally removes output drift.
The iOS library has been in continuous development since 2018 (most mature); Android and Web are newer (2025 onward). The ecosystem spans CLI tools, AI agents, test drivers, and a VS Code extension.