OpenUI Forge — Elixir

Build generative UI apps with a React frontend + Elixir Phoenix backend. Streams OpenAI API responses directly to the browser as SSE using Plug.Conn.send_chunked/2 and the Req HTTP client's streaming :into collector.

Activation Triggers

• "openui elixir", "openui phoenix", "openui elixir backend"
• "generative ui elixir", "elixir streaming ui backend", "phoenix sse openui"

Prerequisites

• Node.js >= 22 (24 LTS recommended) + React >= 18.3.1 (19+ recommended) (frontend)
• Elixir >= 1.15 with Erlang/OTP 25+ (Phoenix 1.8 baseline)
• Phoenix ~> 1.8 (current stable; 1.8.8 as of June 2026)
• OPENAI_API_KEY environment variable set

Quick Start