build123d

name: build123d description: CAD modeling with build123d from Pi. Use when creating, inspecting, rendering, or exporting parametric 3D models, STL files, STEP files, enclosures, brackets, and other mechanical parts.

build123d CAD Skill

Use the build123d_* Pi tools exposed by this package. They bridge the upstream build123d MCP server.

Workflow

1. Read docs/BUILD123D_REFERENCE.md when you need API details.
2. Create or edit build123d Python code.
3. Call build123d_execute_build123d with code and a model_name.
4. Inspect with build123d_get_model_info or build123d_list_models.
5. Render with build123d_render_image when visual confirmation helps.
6. Export with build123d_export_stl for printing or build123d_export_step for CAD interchange.

Safety

The upstream executor validates AST and blocks dangerous builtins/imports. Do not attempt to bypass those guardrails. Keep generated files under the configured output directory (BUILD123D_OUTPUT_DIR, default ./cad-output).