build123d CAD

Parametric 3D CAD via build123d. This skill provides Python scripts for generating and measuring 3D solids. Run them with the exec tool.

Setup (first time only)

cd {baseDir}
uv venv --python 3.12
uv pip install build123d

Commands

All scripts use the venv Python at {baseDir}/.venv/bin/python. All output JSON to stdout.

Generate — export STEP/STL/SVG