LibreAI / AI 3D / threejson
// ai-3d · nnrj/threejson

threejson

Declarative JSON runtime for Three.js — AI agents can author 3D worlds as data.

💎 Hidden gem★ 39 stars⑂ 4 forksMITupdated 2026-10
▦ visual — this project's README ships no embeddable screenshot,
so here's a placeholder. The guide below is complete regardless.
// project facts

Project facts

threejson is an open-source ai 3d project by nnrj (nnrj/threejson on GitHub). It has 39 GitHub stars and 4 forks, is released under the MIT license, and was last updated on GitHub on 3 October 2026.

Repository
nnrj/threejson
GitHub stars
39
Forks
4
License
MIT
Last updated on GitHub
3 October 2026
Category
AI 3D
Listing
Hidden gem — a shorter page for a lesser-known project
Official site
Official site
// how it works

How it works

  1. Give it a prompt

    Describe the object or scene — some tools also accept a photo.

  2. Generate the model

    The AI builds geometry, and often textures or materials too.

  3. Inspect and refine

    Rotate, fix proportions, and polish the result before export.

  4. Export the asset

    Save as GLB, OBJ, or another standard format for your pipeline.

// features

Why people love it

Text-to-3D

Turns written descriptions into 3D geometry.

Image-to-3D

Reconstructs models from one or more photos where supported.

Textured output

Generates materials and textures, not just bare meshes.

Standard exports

Saves to GLB, OBJ, and other formats your tools accept.

Editable results

Outputs you can refine instead of black-box meshes.

Local pipelines

Many workflows run on your own GPU with open models.

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// run it

Run it yourself

  1. Step 1 — Clone the repo

    Download the source and move into the project folder.

    git clone https://github.com/nnrj/threejson.git
    cd threejson
  2. Step 2 — Check the README

    Every project documents its own setup; start with install requirements.

    cat README.md | head -60
  3. Step 3 — Run it

    Follow the project’s launch command — Docker, pip, npm, or a binary release.

    # see README for the exact launch command
// use cases

What you can build

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// faq

Questions, answered

What can I do with the models?

Use them in games, renders, AR, or 3D printing — exports are standard formats.

What license is it under?

MIT licensed — you can use it commercially with attribution.

Do I need a GPU?

Yes for local generation — 3D models are heavy. Cloud options exist for lighter machines.

How good is the quality?

Good for prototyping, concepting, and stylized work; hero assets still need artist polish.

How active is development?

Last pushed 2026-10-03 with 4 forks. Check recent commits for momentum.

// keep exploring

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// alternatives

Alternatives in AI 3D

The most-starred other AI 3D projects in the LibreAI catalogue — the realistic shortlist if threejson is not the right fit.

Get threejson

Free and open — grab the source, star the repo, and start creating.