Installation

usd-validation-nvidia is a pure-Python package. It supports Python 3.10 - 3.13 with OpenUSD 23.11 or later, plus Python 3.14 with OpenUSD 26.08.

From PyPI

pip install usd-validation-nvidia

Optional dependencies

The core package depends only on OpenUSD. Two optional extras are available:

# Bundle usd-core (when OpenUSD is not already provided by your environment)
pip install usd-validation-nvidia[usd]

# Add NumPy, used to accelerate some geometry checks
pip install usd-validation-nvidia[numpy]

# Both
pip install usd-validation-nvidia[usd,numpy]

Use the [usd] extra when usd-core (or a full USD build) is not already on your PYTHONPATH; skip it inside DCCs or runtimes that already provide USD.

Verifying the installation

nvidia_usd_validate --version
nvidia_usd_validate --help

from usd_validation_nvidia import ValidationEngine

engine = ValidationEngine()
results = engine.validate("path/to/asset.usda")
for issue in results.issues():
    print(f"{issue.severity}: {issue.message}")

See Command Line Interface for the command-line interface and Python API for the Python API.

Building from source

The package ships a generated usd_validation_nvidia.capabilities module, produced from the requirement specs in specs/ by usd-profiles-nvidia (developed in-repo under profiles/). To build a wheel from a checkout, generate the capabilities package first, then build:

uv run \
  --no-project \
  --with ./profiles \
  python -m usd_profiles_nvidia.codegen \
    --docs-root specs \
    --destination-dir validation/src \
    --package-name usd_validation_nvidia.capabilities \
    --reverse-domain com.nvidia.usd

uv build --all-packages -o dist

The repository tooling wraps these steps; see CONTRIBUTING.md and AGENTS.md for the full local development setup.