Your AI agent can now build, light and render a 3D scene end to end, and the engine it drives is free and open source.
🔥 It's called 67js, by CodePawl. You prompt Claude Code, Codex or Cursor, and the agent works through an MCP server: places objects, sets lights and fog, checks PNG previews, then renders a still or an MP4.
It's catching on fast: 633 GitHub stars and about 4,100 npm downloads last week.
Setup is one prompt to your agent, or a Claude Code plugin. MIT licensed, needs Node 20.19+ and a local Chrome, and falls back to CPU if you don't have a GPU.
Good call on safety: the MCP server accepts no arbitrary code and no remote asset URLs, only scene data and the GLB files you point it at.
The catch is it's pre-1.0, ships a new minor version about every week, and a minor can break the API. Great for product shots and explainer clips today, too early to build a pipeline on.
🔗 Link in the first reply 👇