Materials Workbench

# Materials Workbench

Use this skill when the user wants to run the materials editor workbench: a local web app with a React client and Express server that renders JSON schemas to images (declare-render) and can generate or edit schemas using AI (materials-agents).

What it is

• Client — React + Vite app for editing and previewing render schemas.
• Server — Express API that renders schemas to PNG/JPG and uses materials-agents (OpenAI) for schema generation or refinement.

When to use

• User wants to "run the workbench", "start the materials editor", or "open the schema editor UI".
• User needs a local dev environment for rendering schemas and AI-assisted schema creation.

Run

From the workbench root:

```bash pnpm install pnpm run install:all # install root, server, and client deps pnpm run dev # start server + client (concurrently) ```

• Client usually: http://localhost:5173
• Server usually: http://localhost:3000 (or port in server config)

Set `OPENAI_API_KEY` for AI/generate features.

Project layout

• `client/` — React frontend (Vite).
• `server/` — Express backend (declare-render, materials-agents, canvas).

Schema format

Same as materials-cli: declare-render format with `id`, `width`, `height`, `layers` (text, image, container, shape, etc.).