cad

# CAD generation, inspection, and validation Provenance: maintained in [earthtojake/text-to-cad](https://github.com/earthtojake/text-to-cad). Use the installed local skill files as the runtime source of truth; the repository link is only for provenance and release review. ## Setup This skill's commands are thin entrypoints over the `cadgen` distribution, which carries the Python build runtime and the JavaScript it executes. Install it once: ```bash python -m pip install -r requirements.txt ``` Rendering additionally needs a browser, which pip cannot supply: ```bash python -m playwright install chromium ``` ## Purpose Create or modify parametric CAD models from natural-language requirements, build validated STEP/STP (or mesh) outputs, inspect geometry references, and return checked outputs. STEP is the default output of CAD geometry and the one the inspection tools read; STL, 3MF, and native GLB are mesh outputs a model declares beside it — or instead of it, when the part is print-only. For assemblies, prefer `cadgen.assembly.AssemblyHelper` with source-level build123d joints, named mating datums, and native labels when the parts have functional assembly relationships. There are two ways into the STEP workflow: build from a build123d model script (the default when designing from scratch or modifying a generated model), or import an existing STEP/STP file directly (when no script exists or the user explicitly targets the STEP file). Both are inspected, snapshotted and ...