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Use these examples when you already know the kind of input you want to send. For the full request schema, see POST /marble/v1/worlds:generate.

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Text prompt

Text prompts are the smallest request. The API generates the panorama first, then generates the world from that panorama. 
curl -X POST 'https://api.worldlabs.ai/marble/v1/worlds:generate' \
  -H 'Content-Type: application/json' \
  -H 'WLT-Api-Key: YOUR_API_KEY' \
  -d '{
    "display_name": "Sunlit Atrium",
    "model": "marble-1.1",
    "world_prompt": {
      "type": "text",
      "text_prompt": "A sunlit indoor atrium with marble floors, plants, and tall glass windows"
    }
  }'

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Single image

For a regular photo or illustration, omit is_pano or set it to false. The API uses the image to generate a panorama, then generates the world. 
curl -X POST 'https://api.worldlabs.ai/marble/v1/worlds:generate' \
  -H 'Content-Type: application/json' \
  -H 'WLT-Api-Key: YOUR_API_KEY' \
  -d '{
    "display_name": "Greenhouse Workshop",
    "model": "marble-1.1",
    "world_prompt": {
      "type": "image",
      "image_prompt": {
        "source": "uri",
        "uri": "https://example.com/greenhouse.jpg"
      },
      "text_prompt": "A peaceful greenhouse workshop with warm light and dense plants"
    }
  }'
A source: "uri" URL must be fetchable by World Labs servers with no cookies, authentication, or referer. Hotlink-protected or login-gated hosts can block these fetches and return a 400. If a URL won’t fetch, upload the file as a media asset or inline it with source: "data_base64". See Errors and troubleshooting.

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Existing panorama

If your image is a full 360-degree equirectangular panorama, send it as an image prompt. is_pano defaults to auto, so the API checks whether the image looks like a valid equirectangular panorama before skipping pano generation. 
curl -X POST 'https://api.worldlabs.ai/marble/v1/worlds:generate' \
  -H 'Content-Type: application/json' \
  -H 'WLT-Api-Key: YOUR_API_KEY' \
  -d '{
    "display_name": "Captured Apartment Pano",
    "model": "marble-1.1",
    "world_prompt": {
      "type": "image",
      "image_prompt": {
        "source": "uri",
        "uri": "https://example.com/apartment-equirect-pano.jpg"
      },
      "is_pano": "auto"
    }
  }'
Set is_pano to true when your integration has already validated the image as a pano. Set it to false for wide 2:1 images that are not 360-degree equirectangular panoramas, such as banners, crops, or collages.

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Multiple images

Use multi-image input when you have several views of the same scene. Add azimuth values when you know where each image faces. 
curl -X POST 'https://api.worldlabs.ai/marble/v1/worlds:generate' \
  -H 'Content-Type: application/json' \
  -H 'WLT-Api-Key: YOUR_API_KEY' \
  -d '{
    "display_name": "Living Room From Two Views",
    "model": "marble-1.1",
    "world_prompt": {
      "type": "multi-image",
      "multi_image_prompt": [
        {
          "azimuth": 0,
          "content": {
            "source": "uri",
            "uri": "https://example.com/living-room-front.jpg"
          }
        },
        {
          "azimuth": 180,
          "content": {
            "source": "uri",
            "uri": "https://example.com/living-room-back.jpg"
          }
        }
      ],
      "text_prompt": "A cozy living room with a fireplace and bookshelves"
    }
  }'

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Local media

For local files, create a media asset, upload to the signed URL, then reference the returned media_asset_id in world_prompt. The same flow works for local images, local panoramas, and local videos. 
{
  "display_name": "Uploaded Pano",
  "model": "marble-1.1",
  "world_prompt": {
    "type": "image",
    "image_prompt": {
      "source": "media_asset",
      "media_asset_id": "550e8400-e29b-41d4-a716-446655440000"
    },
    "is_pano": "auto"
  }
}
See the Quickstart upload flow for the signed upload steps.