omniverse-cad-to-usd

name	omniverse-cad-to-usd
description	Convert supported CAD files to OpenUSD with the standalone usd-convert-cad Python wheel.
version	0.2.0
author	NVIDIA Omniverse
tags	["omniverse","usd","cad"]
tools	["Read","Shell"]
license	Apache-2.0 AND CC-BY-4.0
compatibility	{"python":">=3.12,<3.13","os":["Windows","Linux"],"platforms":["windows-x86_64","linux-x86_64","linux-aarch64"],"runtime":"Requires the usd-convert-cad wheel installed from PyPI (python -m pip install usd-convert-cad). No Omniverse Kit is required; the wheel bundles its own OpenUSD and CAD conversion runtime.","network":"Requires access to the Python package index that hosts the usd-convert-cad wheel during install only."}

Omniverse CAD to USD

When to Use

Use this skill when a user asks to:

• Convert supported CAD, 3D, or interchange files to OpenUSD with the standalone usd-convert-cad Python wheel.
• Convert supported CAD inputs using the usd-convert-cad converter and its Parameters option policy.
• Call CAD-to-USD conversion from a higher-level Physical AI workflow without duplicating converter setup.
• Discover documented converter options from the installed wheel before choosing overrides.
• Explain how HOOPS Exchange concepts map to OpenUSD prims, attributes, materials, units, or composition arcs.

Do not use this skill to substitute mesh converters, hand-authored USD, or unrelated tools for CAD conversion.

What Changed

This skill no longer installs Omniverse Kit or pulls a CAD converter extension from the Kit registry. Conversion now runs entirely inside the self-contained usd-convert-cad wheel published to PyPI. The wheel bundles its own OpenUSD and CAD conversion runtime, so there is no Kit app, no registry pull, no config.env, and no EULA prompt.

Instructions

1. Confirm the source file exists and detect the file type by extension.
2. Confirm the extension is listed under Supported Formats. For AutoCAD (.dwg, .dxf) and Revit (.rvt, .rfa) inputs, first check the platform: these formats are not supported on linux-aarch64 (see Platform Support). On linux-aarch64, do not attempt the conversion — report the platform limitation instead.
3. Create or reuse an isolated Python 3.12 virtual environment for the wheel. The wheel bundles its own OpenUSD (pxr) runtime, so isolating it prevents conflicts with any other pxr distribution in a shared interpreter.
   • Create: python3.12 -m venv .venv, or py -3.12 -m venv .venv on Windows.
   • Activate: .venv\Scripts\Activate.ps1 (PowerShell), .venv\Scripts\activate.bat (cmd.exe), or source .venv/bin/activate (bash). Or skip activation and call the interpreter directly: .venv\Scripts\python.exe (Windows) or .venv/bin/python (Linux).
4. Ensure the wheel is installed in that environment. Probe with python -c "import usd_convert_cad" or usd-convert-cad --help. If it is missing, install it with .