The Rusty Maze example https://3d.ameo.design/geotoy/edit/18 seems to be broken with the setting an initial default material "set_default_material" and even with it removed does not seem to build.
The rest are pretty neat, and a quick syntax for generating 3D geometry. Surprising how short the script needed for something as complicated as the pyramid example was https://3d.ameo.design/geotoy/edit/39 Also, relatively quick to edit and change, moving materials around and such.
Nice to haves: Looking at the resultant mesh, maybe a wireframe "type" material? Is there a way to change the initial light? (Eventually figured out how to toggle the light locations, and add a light. Maybe click the light helpers?) Change the Normal Map, Roughness Map, and Metalness Map XY scales? Link to a texture? (maybe don't want to allow uploads)
Far as a geometry descriptive goes though, the language seems cool, and very concise. Nice that it dumps to something generic like the obj format.