mjswan & mjswan Cloud: Your mjlab task run in a browser

[ttktjmt]

Hi everyone 👋

Sharing mjswan and mjswan Cloud, which let anyone run your mjlab task and its trained policy in a browser.

• mjswan: Turns an mjlab task and its checkpoints into a static web app (MuJoCo WASM + ONNX Runtime Web).
• mjswan Cloud (open beta): A platform for interactive RL simulations built with mjswan. Publish with mjswan publish, then share or embed it.

To port a task from your own repo, the mjlab-to-mjswan agent skill finds the registered tasks, converts your checkpoints (W&B, Hugging Face, or local .pt) to ONNX, builds the app, and checks that the browser-side terms match mjlab. In Claude Code (other agents can follow SKILL.md):

/plugin marketplace add ttktjmt/mjswan
/plugin install mjswan@ttktjmt
/mjswan:mjlab-to-mjswan https://github.com/<you>/<your-mjlab-repo>

Some mjlab projects you can play with now, from their authors' public checkpoints:

HUSKY	wbc-mjlab	PAC-MAN
G1 skateboarding · paper · #572	One policy, many motions · repo · #1064	Dodging balls with depth vision · paper

More: Microduck · MuscleMimic · mjlab's own tasks

Feel free to publish yours on mjswan.com!

Thanks to the mjlab team for building such a solid foundation: most MDP terms already trace as is.
Feedback is very welcome! mjswan is open to contributions, and I'm looking for people who could help build mjswan Cloud. If either sounds interesting, feel free to reach out on Discord!

🌐 mjswan.com · 📖 Docs · 💬 Feedback