Cad Python Packages

cadquery

A python parametric CAD scripting framework based on OCCT

build123d

A python CAD programming library

gdstk

Gdstk (GDSII Tool Kit) is a C++/Python library for creation and manipulation of GDSII and OASIS files.

geomdl

Object-oriented pure Python B-Spline and NURBS library

ansys-geometry-core

A Python wrapper for Ansys Geometry Services

atopile

Design circuit boards with code! ✨ Get software-like design reuse 🚀, validation, version control and collaboration in hardware; starting with electronics ⚡️

build123d-mcp

MCP server for build123d to improve AI cognition when creating 3D CAD models

gdspy

Python module for creating GDSII stream files, usually CAD layouts.

openconstructionerp

Open-source construction ERP - BOQ, PDF/CAD/BIM takeoff, AI cost matching. 42 regional catalogues, 21 languages, 71 modules. AGPL-3.0. v3.0 - pip install openconstructionerp

pyg4ometry

Python code for rapid creation and conversion of radiation transport Monte Carlo (Geant4 and Fluka) geometries

pymadcad

Simple yet powerful CAD (Computer Aided Design) library, written with Python.

onshape-to-robot

Converting Onshape assembly to robot definition (URDF, SDF, MuJoCo) through Onshape API

circuit-synth

Better Boards, Faster! Python-defined circuits with Claude Code as your intelligent design partner

cad-to-dagmc

Convert CAD geometry (STP files) or Cadquery assemblies to DAGMC h5m files

volmdlr

A python VOLume MoDeLeR computations-oriented with STEP support for import/export

nova3d-mcp

Editable, part-aware 3D generation from text or reference images. Open-source client for nova3d.xyz.

bdbox

A live development environment for build123d models

pykicad

Library for working with KiCAD file formats

kicost

Build cost spreadsheet for a KiCad project.

ducpy

Duc is a SQLite-based project-state format for physical-engineering work before execution.

openskp

Open-source SketchUp (.skp) binary file parser - extract geometry, metadata, layers, and materials. Python, TypeScript, Dart.

agentcad

CAD CLI and MCP server for AI agents

crisscross-kit

Main Repository for #-CAD, a cross-platform design platform for crisscross megastructures.

ssk

SolidSKeleton is an easily typable and generatable, solid (CSG) open data format