It's a script driven CAD program, inspired by OpenSCAD and CAD Query. It's most noteworthy features are dimensional type safety and automatic unit conversion.
You can see some samples in the readme: https://github.com/IamTheCarl/CommandCAD
Currently you can make STL files to feed your slicer (and two other formats)
My more near term goals are to export svgs of sketches and produce gcode suitable for laser cutters. My more long term goals are to produce gcode for a variety of machines, add a package manager (for importing libraries and other models), and an interactive editor.