Bridge to Omniverse / Isaac Sim

Send Meshy 3D models directly into NVIDIA Omniverse or Isaac Sim, with optional Sim-Ready physics and semantic labels applied during import.

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Start the Bridge

In the Extensions window, make sure Meshy Bridge is enabled. No separate launcher is required.

Send from Meshy

Open a completed model in your Meshy workspace, click the DCC Bridge menu, and select Send to OV/Isaac.

Meshy sends the model URL, file format, display name, and optional Sim-Ready payload to the local bridge. The extension downloads the asset, converts it to USD when needed, and references it under /World/<slug>.

Configure Sim-Ready

Isaac Sim users can configure the Sim-Ready dialog before sending:

• Semantic Class: a simple class label such as chair, table, or robot. The bridge writes it through modern semantic labels and also keeps legacy SemanticsAPI("class") compatibility.
• Wikidata QCode: optional semantic taxonomy label, such as Q15026. Empty is allowed; invalid formats are rejected before sending.
• Height (m): optional real-world height override. Empty keeps the source layer and stage unit scaling.
• Body Type: dynamic, kinematic, or static.
• Mass: defaults to Auto. Auto sends no mass or density; Mass sends kilograms; Density sends kg/m³.
• Collision Approximation: convexHull, convexDecomposition, meshSimplification, boundingCube, boundingSphere, or none. SDF is not supported in this release. Dynamic bodies only allow convexHull, convexDecomposition, boundingCube, and boundingSphere.
• Static Friction, Dynamic Friction, and Restitution: physics material values bound to the imported colliders.

Verify Import

After the request succeeds, the model appears in the active stage under /World/<slug>. For Sim-Ready imports, descendant meshes receive UsdPhysics.CollisionAPI and UsdPhysics.MeshCollisionAPI; dynamic and kinematic wrappers also receive UsdPhysics.RigidBodyAPI and UsdPhysics.MassAPI.

Press Play in Isaac Sim to test physics behavior. Dynamic bodies should simulate, static bodies remain fixed, and kinematic bodies can be driven by animation or script while participating in collision.

Troubleshooting

• If Meshy cannot connect, confirm Isaac Sim or Kit is running and the extension is enabled.
• If /status does not respond, confirm no other process is using port 5331, then reload the extension.
• If import fails with no active USD stage, create or open a stage before sending.
• If a dynamic import rejects none or meshSimplification, choose a convex or bounding approximation.
• If a QCode is rejected, use the Wikidata format Q followed by a non-zero integer, for example Q15026.

Supported Models

Send to OV/Isaac supports all Meshy model types, including animated models.