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Manifest reference

The CLI writes this file for you. You only need this page if you want to change what it guessed.

{
  "slug": "drive-route-66",
  "title": "Drive Route 66",
  "description": "Fly all 2,199 miles of the Mother Road.",
  "engine": "three",
  "build": "dist",
  "entry": "index.html",
  "thumbnail": "cover.png",
  "tags": ["data-viz", "map", "americana"]
}
slugrequired
Your world’s address. Lowercase letters, numbers and dashes, 3–40 characters. Becomes vyrld.com/g/<slug>.
titlerequired
Display name, up to 80 characters.
descriptionoptional
Shown on the world’s page. Plain text, blank lines become paragraphs.
enginedetected
three · babylon · playcanvas · r3f · webgpu · canvas2d · wasm · other
builddetected
Directory to upload, relative to platform.json. Defaults to dist.
entrydefaults
Entry document inside build. Must be .html. Defaults to index.html.
thumbnaildetected
Cover image inside build. Worlds with one get played substantially more.
tagsoptional
Up to 8. These are how people find you on Discover.
networkoptional
Outbound hosts your world needs. Recorded now, enforced in a later release.

What the scanner checks

Every upload is scanned before it goes live. We reject bundles that register a service worker, match a known cryptominer signature, or ship executables. We flag — but do not block — cookie access, frame-busting, obfuscated eval, and password inputs; a person reviews those.

The scanner is a filter, not a guarantee. The real boundary is that every world runs on its own isolated origin, sandboxed away from the platform and from every other world.

Limits