scenario-3d-worlds
Use when generating navigable 3D worlds or Gaussian splat scenes on Scenario via MCP: text-to-world, image-to-world, a 360 panorama or skybox turned into a walkable splat, multi-view photos or a video walkthrough reconstructed as a splat, or one object photo to splat. Keywords: World Labs Marble 1.1, 1.1 Plus, 1.0 Draft, Hunyuan World, HY World, image-to-skybox, skybox-to-splat, multiview-to-splat, TripoSplat, gaussian splatting, 3DGS, spz, world generation, explorable scene, VR.
- Installs
- 431
- Last 24h
- +10
- Trending rank
- #8868
- Security
- Not audited
Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/scenario-labs/skills --skill scenario-3d-worlds- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads scenario-3d-worlds automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Scenario 3D Worlds
Overview
These models build explorable environments as 3D Gaussian splats, not polygon meshes: volumetric
scenes to walk through and render in real time, with no UVs or topology to edit (Marble splats also
export to triangle or collider mesh). Three vendors sit side by side: World Labs Marble in three
quality tiers, Hunyuan's HY World pipeline, and TripoSplat for single objects. Discover them with
search and treat model_schema_get as the contract; HY World members carried a geo restriction
tag at authoring time, so hits differ by team and region.
Connection and the core loop: see the scenario skill; polygon meshes, rigging, and the 3D viewer:
the scenario-3d skill; skybox-only work with no splat stage: the scenario-skyboxes skill. If a
sibling skill named here is missing from your available skills, ask the user to install it
(npx skills add scenario-labs/skills --skill <name>); unattended, proceed from tool schemas and
flag the gap.
Quick reference
Pick the member by what you already have (input names from the live schemas):
| You have | Member | Inputs |
|---|---|---|
| A text idea | Marble, any tier | prompt alone |
| One image, flat or 360 | Marble | images, one entry; isPano: true if 360 |
| 2 to 8 photos of one scene | Marble | images |
| A walkthrough video | Marble or HY Multi-view to Splat | video |
| Many overlapping photos | HY Multi-view to Splat | images, 2 to 64 at authoring time |
| One photo of a place | HY Image to Skybox, then Skybox to Splat | image, then panorama |
| One photo of an object | TripoSplat | image; background removal is automatic |
images and video are mutually exclusive wherever both exist; isPano applies only when exactly
one image is passed. TripoSplat wants one clean object and every other member wants a scene: aiming
either at the other's subject is the main failure mode.
Draft on Marble, then upgrade
The three Marble tiers (1.0 Draft, 1.1, 1.1 Plus) take identical inputs, and the same inputs with
the same seed reproduce the same world on every tier. Iterate on Draft, which returned in about a
minute at authoring time, then rerun the identical parameters on 1.1 (balanced) or 1.1 Plus (highest
fidelity, dynamically grows larger worlds when the scene allows). The cost spread across tiers was
more than tenfold at authoring time, so dry_run before committing. splatResolution picks the
stored density (100k, 500k, full); disableRecaption: true stops Marble rewriting your
prompt.
The HY World pipeline runs long
Image to Skybox is an image model, not a 3D one: it expands one photo of a place into a 2:1
equirectangular panorama (backend trades full fidelity against qwen speed and cost). Its
output asset id goes to Skybox to Splat as panorama. There, the three trajectory toggles
(applyNavTraj, applyUpRoute, applyReconIteration, default true) drive cost and time;
maxSteps sharpens marginally and materially moves neither. The splat stage ran close to an hour at
median at authoring time: keep re-calling jobs_wait with pending_job_ids; a timeout is not a
failure and never justifies a second model_run. Multi-view to Splat is the opposite, fast and
cheap: best when the camera moved through a static scene with parallax.
Worked example: graybox a level from a concept image
searchwithtarget="models",query="marble world",public=true. Tiers appear side by side, e.g.model_worldlabs-marble-1-0-draft(a live hit at authoring time: re-discover each session).model_schema_getwith the Draft id: fields, caps, and defaults before anything else.upload_assetthe concept image (see thescenarioskill) for an asset id.model_runwithdry_run=trueandparameters={"images": ["asset_x"], "prompt": "abandoned observatory interior, dusk light through the dome slit", "seed": 1234, "splatResolution": "full"}; repeat the dry run on the 1.1 id to see the upgrade cost.model_runon Draft withwait=false, thenjobs_waitwith the job id, re-called withpending_job_idson timeout.asset_displaythe splat and walk it; adjust and repeat on Draft until the layout is right.- Rerun the identical parameters, same
seed, on the 1.1 or 1.1 Plus id from step 1, thenasset_downloadthe final.spz.
Common mistakes
- Passing
imagesandvideotogether: mutually exclusive on Marble and Multi-view to Splat. - A single equirectangular input without
isPano: true: Marble reads it as a flat photo. - Changing or omitting
seedbetween the draft and the upgrade tier: a different world comes back. - Feeding TripoSplat a scene, or a world model a lone object.
- Treating a
jobs_waittimeout on Skybox to Splat as a failure: the job is still running. - Adjusting
maxStepsto buy quality or cut cost: the trajectory toggles move cost,maxStepsbarely moves sharpness. - Expecting UVs or editable topology from a splat: for polygon assets, use the mesh generators in
scenario-3d.
FAQ
What does the scenario-3d-worlds skill do?
Use when generating navigable 3D worlds or Gaussian splat scenes on Scenario via MCP: text-to-world, image-to-world, a 360 panorama or skybox turned into a walkable splat, multi-view photos or a video walkthrough reconstructed as a splat, or one object photo to splat. Keywords: World Labs Marble 1.1, 1.1 Plus, 1.0 Draft, Hunyuan World, HY World, image-to-skybox, skybox-to-splat, multiview-to-splat, TripoSplat, gaussian splatting, 3DGS, spz, world generation, explorable scene, VR.
How do I install scenario-3d-worlds?
Run npx skills add https://github.com/scenario-labs/skills --skill scenario-3d-worlds in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/scenario-3d-worlds/ (personal) or .claude/skills/scenario-3d-worlds/ (project).
Which AI agents can use scenario-3d-worlds?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is scenario-3d-worlds safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains scenario-3d-worlds?
It is published by scenario-labs in scenario-labs/skills. It has 431 recorded installs.
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