Accelerate VR Development with AI & the Immersive Web SDK

The Immersive Web SDK (IWSDK) is Meta's open-source framework for building VR on the web. It handles the heavy lifting—physics, hand tracking, grab interactions, movement, and spatial UI—so you can focus on your creative vision. Built on Three.js with a high-performance Entity Component System (ELICS), Vite-based hot-reload, and Havok physics out of the box, IWSDK gives you everything needed to build professional-grade WebXR experiences.

For anyone building immersive sites on VRSites.com, IWSDK is a game-changer: it means you can create rich, interactive VR content that runs in any browser and on any headset—exactly the kind of content that makes web-based VR compelling.

The new agentic integration goes far beyond code generation. The AI operates in a closed loop: it writes code, reloads the scene, visually inspects the result, interacts with the world, and fixes issues—all without your input. This is the difference between "generate a snippet" and "build and test an entire VR experience."

To prove the agentic workflow, Meta revisited Project Flowerbed—an immersive VR gardening experience that originally required tens of thousands of lines of custom code. Using the new AI workflow, they leveraged the existing creative assets and rebuilt the entire codebase from the ground up in just 15 hours. This isn't generating boilerplate. It's a full, interactive VR experience for the web, rebuilt by AI using IWSDK.

For VR Sites creators, the implication is clear: experiences that once required a dedicated development team can now be prototyped and built by a single person with a good idea and an AI coding assistant.

Lower the barrier to VR creation. The biggest challenge for VRSites.com has always been that building great WebXR content requires specialised skills. IWSDK's agentic workflow removes that barrier—designers, artists, and non-developers can now create compelling VR experiences and publish them on VR Sites.

More content, better discovery. As creation gets easier, the volume and quality of WebXR experiences will surge. VR Sites is perfectly positioned to be the discovery hub where users find, explore, and share these new AI-assisted VR creations.

Instant sharing via the web. IWSDK builds for WebXR—no app stores, no downloads. Creators deploy to any hosting provider and share a URL. Users click a link and enter VR. This is exactly how content on VRSites.com works: browser-first, accessible everywhere.

Works on all VR hardware. WebXR runs on Meta Quest, Steam Frame, Samsung Galaxy XR, Apple Vision Pro, and desktop browsers. Every VR experience built with IWSDK and listed on VR Sites reaches the widest possible audience.

IWSDK works with your favourite AI coding assistant, including Claude Code, Cursor, GitHub Copilot, and Codex. Here's how to go from zero to a shareable VR experience:

1. Create your project. Run npm create @iwsdk in a terminal and pick your AI tool. Everything is automatically configured.

2. Describe what you want. Open the project in your AI tool and prompt: "Build me an RPG-style VR game with neon blocks and a laser sword."

3. Watch it build. The AI writes the code, loads the scene, tests interactions, finds and fixes bugs—all without you touching anything.

4. Refine by prompting. Say: "The blocks feel too fast." The AI adjusts, confirms the change, and saves.

5. Share with a link. Deploy to GitHub Pages, Vercel, or Netlify and send the URL. Anyone can open it in VR—or submit it to VRSites.com for others to discover.

Built something with IWSDK? Share your WebXR creation with us at VRSites.com—we're cataloguing the best AI-built VR experiences on the web.