Core Tier

The Core tier is the baseline SimReady Foundation distribution. It supplies the requirements, capabilities, feature contracts, profile contracts, and static validation rules used by general OpenUSD, visualization, physics, robotics, semantic-label, non-visual-sensor, Isaac Sim, and packaging workflows. It has no dependency on another Foundation tier.

Install the validator and tier together:

pip install simready-validate simready-foundation-tier-core

Install the optional Benchmark environment and the runtime tests bundled by the tier with:

pip install "simready-foundation-tier-core[benchmark]"

The tables below reflect the catalogs in the current source tree. The tier’s feature JSON and profile TOML files remain the machine-readable sources of truth.

Profiles

Each profile version pins exact feature versions; a feature may also be marked optional in the profile TOML, which is the machine-readable source of truth. Links open the dedicated authoring page where one exists, otherwise the shared profile comparison.

Profile	Available versions	Catalog file
Robotics-Prop	3.0.0, 3.1.0, 3.2.0, 3.3.0, 4.0.0	robotics_prop.toml
Robot-Body	2.0.0, 2.1.0, 2.2.0, 2.3.0, 3.0.0	robot_body.toml
Robot-Gripper	2.0.0, 2.1.0, 2.2.0, 3.0.0	robot_gripper.toml
Package	1.0.0	package_profiles.toml
Package-NoBOM	1.0.0	package_profiles.toml
Package-Candidate	1.0.0, 1.1.0, 1.2.0, 1.3.0	package_profiles.toml
Open-Taxonomy-COCO	0.1.0	open_taxonomy_profiles.toml
Open-Taxonomy-Cityscapes	0.1.0	open_taxonomy_profiles.toml
Open-Taxonomy-ADE20K	0.1.0	open_taxonomy_profiles.toml
Open-Taxonomy-PascalVOC	0.1.0	open_taxonomy_profiles.toml
Open-Taxonomy-SUNRGBD	0.1.0	open_taxonomy_profiles.toml
Open-Taxonomy-ImageNet1K	0.1.0	open_taxonomy_profiles.toml

Features

The runtime suffix identifies the contract variant: STANDARD, PHYSX, NEWTON, MUJOCO, ISAAC, ROS, RTX, OPENPBR, or MDL.

Feature	Purpose	Available versions
FET_000_ISAAC	Core (Isaac)	0.1.0
FET_000_MUJOCO	Core (MuJoCo)	0.1.0
FET_000_NEWTON	Core (Newton)	0.1.0
FET_000_PHYSX	Core (PhysX)	0.1.0
FET_000_STANDARD	Core	0.1.0, 0.2.0
FET_001_STANDARD	Minimal Placeable Visual	0.1.0, 1.0.0, 1.0.1
FET_002_STANDARD	Posable Bodies	0.1.0
FET_003_MUJOCO	Rigid Body Physics (MuJoCo)	0.1.0
FET_003_NEWTON	Rigid Body Physics (Newton)	0.1.0
FET_003_PHYSX	Rigid Body Physics (PhysX)	0.1.0, 0.2.0, 0.3.0, 0.4.0
FET_003_STANDARD	Rigid Body Physics	0.1.0, 0.2.0
FET_004_MUJOCO	Simulate Multi-Body Physics (MuJoCo)	0.1.0
FET_004_NEWTON	Simulate Multi-Body Physics (Newton)	0.1.0
FET_004_PHYSX	Simulate Multi-Body Physics (PhysX)	0.1.0, 0.2.0, 0.3.0, 0.4.0
FET_004_ROBOT_MUJOCO	Simulate Multi-Body Physics (Robot MuJoCo)	0.1.0
FET_004_ROBOT_NEWTON	Simulate Multi-Body Physics (Robot Newton)	0.1.0
FET_004_ROBOT_PHYSX	Simulate Multi-Body Physics (Robot PhysX) — Deprecated; compatibility only	0.1.0, 0.2.0, 0.3.0, 0.4.0
FET_004_STANDARD	Simulate Multi-Body Physics	0.1.0, 0.2.0
FET_005_STANDARD	Simulate Grasp Physics	0.1.0
FET_006_MDL	Materials (MDL)	0.1.0, 0.2.0
FET_006_OPENPBR	Materials (OpenPBR / MaterialX)	0.1.0
FET_006_STANDARD	Materials (UsdPreviewSurface)	0.1.0, 0.2.0
FET_007_STANDARD	Non-Visual Materials	0.2.0
FET_010_STANDARD	Display Color	0.1.0
FET_011_RTX	Semantic Labels (RTX)	0.1.0
FET_011_STANDARD	Semantic Labels	0.2.0
FET_021_ISAAC	Robot Core (Isaac)	0.1.0, 0.2.0, 0.3.0
FET_022_ISAAC	Driven Joints (Isaac)	0.1.0, 0.2.0
FET_022_MUJOCO	Driven Joints (MuJoCo)	0.1.0
FET_022_NEWTON	Driven Joints (Newton)	0.1.0
FET_022_PHYSX	Driven Joints (PhysX)	0.1.0, 0.2.0
FET_022_STANDARD	Driven Joints	0.1.0, 0.2.0
FET_023_ISAAC	Robot Materials	0.1.0
FET_024_MUJOCO	Base Articulation (MuJoCo)	0.1.0
FET_024_NEWTON	Base Articulation (Newton)	0.1.0
FET_024_PHYSX	Base Articulation (PhysX)	0.1.0
FET_024_STANDARD	Base Articulation	0.1.0
FET_025_ROS	ROS Ready (Isaac)	0.1.0
FET_028_ISAAC	Gripper (Isaac)	0.1.0
FET_028_MUJOCO	Gripper (MuJoCo)	0.1.0
FET_028_STANDARD	Gripper	0.1.0
FET_030_STANDARD	Packaging Core	0.1.0
FET_031_STANDARD	Self-contained Package Source	0.1.0
FET_032_STANDARD	Packaging Introspection	0.1.0
FET_033_STANDARD	Metadata	0.1.0, 0.2.0, 0.3.0, 0.4.0
FET_040_STANDARD	Semantic Labels - COCO	0.1.0
FET_041_STANDARD	Semantic Labels - Cityscapes	0.1.0
FET_042_STANDARD	Semantic Labels - ADE20K	0.1.0
FET_043_STANDARD	Semantic Labels - PASCAL VOC	0.1.0
FET_044_STANDARD	Semantic Labels - SUN RGB-D	0.1.0
FET_045_STANDARD	Semantic Labels - ImageNet-1K	0.1.0
FET_046_STANDARD	Semantic Labels - Wikidata	0.1.0
FET_100_ISAAC	IsaacSim Composition	0.1.0, 0.2.0, 0.3.0, 0.4.0
FET_101_ISAAC	Robot IsaacSim Composition	0.1.0

Package contents and discovery

The distribution advertises both the usd_validation_nvidia and simready.tier entry-point groups. Together they expose:

• Capability and requirement documentation plus registered validators.

• Generated requirement enums.

• Feature JSON and profile TOML catalogs.

• Optional tier-owned Benchmark runtime tests.

For the package layout, build commands, and local development notes, see the README in nv_core/tiers/simready_foundation_tier_core/ in the source tree.