RobolaWeb: A visual MJCF editor that syncs with your local XML files

[PeterChang1]

Hi MuJoCo Community,

Like many of you, I spend a lot of time tweaking MJCF files. While the native MuJoCo viewer is excellent for visualization, the "edit XML -> save -> reload" loop always felt a bit disconnected for fine-tuning model properties.

I developed RobolaWeb, a browser-based visual editor designed to streamline this workflow without forcing you to move your files to the cloud. Free to use.

🛠️ How it works

It uses a small Python bridge with mujoco spec model edit to link your local environment with a web-based UI.
I suggest to create a new python venv by python 3.12, then

1. pip install robola
2. robola serve your_model.xml or robola serve new_model_path.xml --new
3. Sign up in the browser at [Robolaweb].Then Edit properties (joint limits, body geom pose, actuator, tendon, etc.) visually. Save Model and test Run.

✨ Key Features

• Bi-directional Sync: Changes in the web UI are written directly to your local XML file. I will create a new mjcf ,will not cover your model.
• Privacy First: Your models stay on your local machine; the web interface only handles the property manipulation.
• Live Updates: See the physics and visual changes instantly as you adjust parameters.
• Cross-Platform: Works wherever Python and a browser can run.

🚀 Motivation

Hand-editing XML is often "filthy" when you're just trying to align coordinates or test damping values. Even if you have the model's structure in your mind, having a "dashboard" to slide values and see instant results significantly boosts productivity.

I'm currently in the Beta stage and it’s free to use. I would love to get feedback from this community on what features would be most useful next (e.g., URDF to MJCF conversion, advanced tree management).

• Quick Start Guide: [Quick Start]
• Quick Demo: [Crank_slider]
• HField and Flex is not support now
  Looking forward to hearing your thoughts!

[omarrayyann]

@PeterChang1 Cool!