---
title: "Isaac Sim extension"
description: "Generate and load physics-enabled SimReady USD assets directly onto your stage from inside NVIDIA Isaac Sim."
---

import { Steps, Aside, LinkCard } from '@astrojs/starlight/components';

The **Rigyd SimReady Importer** is an NVIDIA Isaac Sim / Omniverse Kit extension (`rigyd.simready`) that brings the Rigyd conversion pipeline into the simulator. Convert any 3D model, text prompt, or image into a physics-enabled SimReady USD asset and reference it straight onto your stage — no manual download or drag.

<Aside type="note">
  Rigyd emits **native SimReady USD** (Z-up, `metersPerUnit=1.0`, with mass / center-of-mass / inertia / friction / restitution), so the extension is a thin API client and stage loader, not a format converter.
</Aside>

## Install

<Steps>

1. Clone [the extension repo](https://github.com/ARTLabs-Engineering/rigyd-isaac-sim).

2. In Isaac Sim: **Window → Extensions → ☰ → Settings → +** (Extension Search Paths) and add the absolute path to the repo's `exts/` folder.

3. Find **rigyd.simready** in the extension list and enable it (toggle **Autoload** to keep it on).

4. Open **Window → Rigyd**, paste your `rgyd_live_…` API key, **Save key**, then **Test connection**.

</Steps>

<Aside type="tip">
  Mint the key at **[app.rigyd.com](https://app.rigyd.com)** (Settings → API Keys). It spends your account's credits, just like the [API](/quickstart) and [CLI](/tools/cli).
</Aside>

## Use

| Flow | Input | Cost |
|------|-------|------|
| Text → SimReady | a prompt | 2 credits |
| 3D file → SimReady | `.glb/.gltf/.fbx/.obj/.stl/.ply/.usd*` (+ optional target triangle count) | 1 credit |
| Image → SimReady | 1–4 images | 3 credits |

The panel submits the job to `api.rigyd.com`, polls to completion ([same lifecycle as the API](/reference/job-lifecycle)), downloads the self-contained `format=usd` result ZIP, unzips it, and references the `.usd` under `/World`. Press **Play** to simulate.

## Status

**v1.0.0** — validated end-to-end on NVIDIA Isaac Sim (textures + SimReady physics intact). All three input flows (Text / Images / 3D file) are implemented.

## Links

<LinkCard title="Source & install guide" description="github.com/ARTLabs-Engineering/rigyd-isaac-sim" href="https://github.com/ARTLabs-Engineering/rigyd-isaac-sim" />
<LinkCard title="Prefer scripting? Use the CLI & SDK" description="Same USD output, offline pipelines." href="/tools/cli" />