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Build cross-platform, server-driven UI (SDUI) as pure data β€” components and templates that render natively on every channel, streamed by real agents over MCP. You never write React, SwiftUI, or Compose. You write neutral JSON definitions in rx/, style them with tokens, drive them with a tiny generic state model, and view/test everything live in Studio. The platform turns each definition into a workflow node and serves it to every client as an MCP App. The folder is called rx/ for Relationship Experience: the interfaces you define here are how your brand’s Agents meet people.

🎯 The Learning Journey

Work through these in order β€” each doc builds on the previous one.

Getting Started

Core Concepts

Test & Ship

Building with an AI agent? CLAUDE.md is the condensed rulebook an agent (or you, in a hurry) can follow end-to-end.

🧭 Quick Decision Guide


πŸ“ Key Principles


πŸš€ Fast Path

Start with 01 β€” Quick Start.