world-labs-marble
Generate persistent, explorable 3D worlds/environments with Marble by World Labs — from text, a single image, multiple images, video, or a 360 panorama, plus coarse-structure blocking with Chisel. Use this skill when a task needs a navigable 3D scene, VR/immersive backdrop, virtual-production environment, previz set, game-blockout, or web/engine-ready Gaussian splat or mesh, and you must choose an input mode, a Marble model, an export format, and a plan/API route, then review world quality. Covers the Marble web app and the World API, editing/expansion, output formats and what each supports
Profile →npx skills add calesthio/generative-media-skills --skill world-labs-marble --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
What it does
It instructs the agent to generate navigable 3D environments from text, images, video, or a 360 panorama, using Marble’s models and export options, and to review downstream quality and suitability for production use.
How it works
- Choose an input mode from: Text, Single image, Multiple images, Video, 360 panorama.
- Select a Marble model (marble-1.1, marble-1.1-plus, marble-1.0, marble-1.0-draft) and apply production heuristics about when to use each.
- Pick an export format (Gaussian splat SPZ/PLY, collider mesh GLB, high-quality mesh GLB, 360 panorama PNG, Video) according to fidelity, physics needs, and downstream compatibility.
- Decide on a downstream pipeline: import into Unity/Unreal/Blender/Houdini/Web, or use Spark for web.
- If editing or expansion is needed, utilize tools like Create & Edit, Pano Edit, Expand, Variations, Compose (Studio), and Record with camera paths.
- Consider licensing and rights notes: Free vs Pro/Max tiers affect commercial rights and outputs.
- Ensure the chosen route aligns with the plan/API, then review world quality against production criteria (seams, ground plane, occluded regions, artifacts, scale, style consistency).
When to use it
Use when delivering a 3D space: VR/web viewer/game engine environments, virtual production/backdrops, previz, or programmatic World API generation. Do not use for flat images, short clips, or real-time infinite-world streaming; Marble outputs are static, bounded 3D environments.
What it can touch
The skill references inputs, Marble models, export formats, World API routes, and downstream engines/tools (Unity/Unreal/Blender/Houdini/Web). It includes mentions of specific formats (SPZ, PLY, GLB, PNG) and tools (Spark, OpenCV coordinates adjustments).
Caveats
- Static, bounded worlds with no in-exported motion or physics baked in; dynamic elements appear in video renders.
- High-quality mesh exports are Pro-tier, rate-limited, and owner-only; expansion features may be gated to Pro/Max.
- Licensing notes indicate commercial rights vary by tier; verify live TOS for current plan.
- OpenGL vs OpenCV coordinate conventions may require Y/Z axis adjustments when importing.
# World Labs Marble Marble is World Labs' commercial multimodal **world model**: it lifts a text prompt, image(s), video, panorama, or coarse 3D blocking into a **persistent, downloadable 3D environment** you can navigate, edit, expand, and export. World Labs was co-founded by Fei-Fei Li; Marble reached general availability on **2025-11-12** and a programmatic **World API** was announced **2026-01
What does the world-labs-marble skill do?
Generate persistent, explorable 3D worlds/environments with Marble by World Labs — from text, a single image, multiple images, video, or a 360 panorama, plus coarse-structure blocking with Chisel. Use this skill when a task needs a navigable 3D scene, VR/immersive backdrop, virtual-production environment, previz set, game-blockout, or web/engine-ready Gaussian splat or mesh, and you must choose an input mode, a Marble model, an export format, and a plan/API route, then review world quality. Covers the Marble web app and the World API, editing/expansion, output formats and what each supports
How do I install it?
Run `npx skills add calesthio/generative-media-skills --skill world-labs-marble --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From calesthio/generative-media-skills, a repository with 112 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.