Worlds

Generate a world

Start world generation.

Creates a new world generation job and returns a long-running operation. Poll the /operations/ endpoint to check generation status and retrieve the generated world when complete.

Args: request: The world generation request containing world_prompt, display_name, tags, model, seed, and permission settings.

Returns: GenerateWorldResponse with operation_id and timestamps. Use the operation_id to poll for completion.

Raises: HTTPException: 400 if invalid request or content violates policies HTTPException: 402 if insufficient credits HTTPException: 500 if generation could not be started

POST

marble

worlds:generate

Generate World

curl --request POST \
  --url https://api.worldlabs.ai/marble/v1/worlds:generate \
  --header 'Content-Type: application/json' \
  --header 'WLT-Api-Key: <api-key>' \
  --data '
{
  "world_prompt": {
    "disable_recaption": true,
    "text_prompt": "<string>",
    "type": "text"
  },
  "display_name": "<string>",
  "model": "marble-1.1",
  "permission": {
    "allow_id_access": false,
    "allowed_readers": [],
    "allowed_writers": [],
    "public": false
  },
  "seed": 2147483647,
  "tags": [
    "<string>"
  ]
}
'

import requests

url = "https://api.worldlabs.ai/marble/v1/worlds:generate"

payload = {
    "world_prompt": {
        "disable_recaption": True,
        "text_prompt": "<string>",
        "type": "text"
    },
    "display_name": "<string>",
    "model": "marble-1.1",
    "permission": {
        "allow_id_access": False,
        "allowed_readers": [],
        "allowed_writers": [],
        "public": False
    },
    "seed": 2147483647,
    "tags": ["<string>"]
}
headers = {
    "WLT-Api-Key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'WLT-Api-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    world_prompt: {disable_recaption: true, text_prompt: '<string>', type: 'text'},
    display_name: '<string>',
    model: 'marble-1.1',
    permission: {
      allow_id_access: false,
      allowed_readers: [],
      allowed_writers: [],
      public: false
    },
    seed: 2147483647,
    tags: ['<string>']
  })
};

fetch('https://api.worldlabs.ai/marble/v1/worlds:generate', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.worldlabs.ai/marble/v1/worlds:generate",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'world_prompt' => [
        'disable_recaption' => true,
        'text_prompt' => '<string>',
        'type' => 'text'
    ],
    'display_name' => '<string>',
    'model' => 'marble-1.1',
    'permission' => [
        'allow_id_access' => false,
        'allowed_readers' => [
                
        ],
        'allowed_writers' => [
                
        ],
        'public' => false
    ],
    'seed' => 2147483647,
    'tags' => [
        '<string>'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "WLT-Api-Key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.worldlabs.ai/marble/v1/worlds:generate"

	payload := strings.NewReader("{\n  \"world_prompt\": {\n    \"disable_recaption\": true,\n    \"text_prompt\": \"<string>\",\n    \"type\": \"text\"\n  },\n  \"display_name\": \"<string>\",\n  \"model\": \"marble-1.1\",\n  \"permission\": {\n    \"allow_id_access\": false,\n    \"allowed_readers\": [],\n    \"allowed_writers\": [],\n    \"public\": false\n  },\n  \"seed\": 2147483647,\n  \"tags\": [\n    \"<string>\"\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("WLT-Api-Key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.worldlabs.ai/marble/v1/worlds:generate")
  .header("WLT-Api-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"world_prompt\": {\n    \"disable_recaption\": true,\n    \"text_prompt\": \"<string>\",\n    \"type\": \"text\"\n  },\n  \"display_name\": \"<string>\",\n  \"model\": \"marble-1.1\",\n  \"permission\": {\n    \"allow_id_access\": false,\n    \"allowed_readers\": [],\n    \"allowed_writers\": [],\n    \"public\": false\n  },\n  \"seed\": 2147483647,\n  \"tags\": [\n    \"<string>\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.worldlabs.ai/marble/v1/worlds:generate")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["WLT-Api-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"world_prompt\": {\n    \"disable_recaption\": true,\n    \"text_prompt\": \"<string>\",\n    \"type\": \"text\"\n  },\n  \"display_name\": \"<string>\",\n  \"model\": \"marble-1.1\",\n  \"permission\": {\n    \"allow_id_access\": false,\n    \"allowed_readers\": [],\n    \"allowed_writers\": [],\n    \"public\": false\n  },\n  \"seed\": 2147483647,\n  \"tags\": [\n    \"<string>\"\n  ]\n}"

response = http.request(request)
puts response.read_body

{
  "done": true,
  "operation_id": "<string>",
  "cost": {
    "total_credits": 123,
    "line_items": [
      {
        "credits": 123,
        "name": "<string>"
      }
    ]
  },
  "created_at": "2023-11-07T05:31:56Z",
  "error": {
    "code": 123,
    "message": "<string>"
  },
  "expires_at": "2023-11-07T05:31:56Z",
  "metadata": {},
  "response": "<unknown>",
  "updated_at": "2023-11-07T05:31:56Z"
}

{
  "detail": "Insufficient API credits to start this request. Add credits or enable auto-refill at https://platform.worldlabs.ai/billing."
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}

Authorizations

WLT-Api-Key

string

header

required

API key for authentication. Get your key from the developer portal.

Body

application/json

Request to generate a world from text, image, multi-image, or video input.

world_prompt

WorldTextPrompt · object

required

Text-to-world generation.

Generates a world from a text description. text_prompt is REQUIRED.

WorldTextPrompt
ImagePrompt
MultiImagePrompt
VideoPrompt

Show child attributes

display_name

string | null

Optional human-readable title for the world (max 64 characters). Stored as world metadata and returned in world responses; does not affect generation. If omitted, World Labs may generate a title from the prompt.

Maximum string length: 64

model

default:marble-1.1

The model to use for generation. marble-1.1-plus includes dynamic world sizing. Legacy names ('Marble 0.1-plus', etc.) still work but are deprecated and will be removed in a future release.

Available options:

marble-1.0-draft,

marble-1.0,

marble-1.1,

marble-1.1-plus

permission

Permission · object

The permission for the world

Show child attributes

seed

integer | null

Random seed for generation

Required range: 0 <= x <= 4294967295

Response

Successful Response

Response from world generation endpoint.

done

boolean

required

True if the operation is completed

operation_id

string

required

Operation identifier

cost

OperationCost · object | null

Settled credit cost for the operation. Populated only on successful completion.

Show child attributes

created_at

string<date-time> | null

Creation timestamp

error

OperationError · object | null

Error information if the operation failed

Show child attributes

expires_at

string<date-time> | null

Expiration timestamp

metadata

Metadata · object | null

Service-specific metadata, such as progress percentage

response

any | null

Result payload when done=true and no error. Structure depends on operation type.

updated_at

string<date-time> | null

Last update timestamp

Get a worldGet a world by ID. Retrieves a world's details including generated assets if available. Only the world owner or users with access to public worlds can retrieve them. Args: world_id: The unique identifier of the world. Returns: World object with world_id, display_name, tags, assets, created_at, updated_at, permission, model, world_prompt, and world_marble_url. Raises: HTTPException: 404 if world not found or access denied

⌘I

Generate World

curl --request POST \
  --url https://api.worldlabs.ai/marble/v1/worlds:generate \
  --header 'Content-Type: application/json' \
  --header 'WLT-Api-Key: <api-key>' \
  --data '
{
  "world_prompt": {
    "disable_recaption": true,
    "text_prompt": "<string>",
    "type": "text"
  },
  "display_name": "<string>",
  "model": "marble-1.1",
  "permission": {
    "allow_id_access": false,
    "allowed_readers": [],
    "allowed_writers": [],
    "public": false
  },
  "seed": 2147483647,
  "tags": [
    "<string>"
  ]
}
'

import requests

url = "https://api.worldlabs.ai/marble/v1/worlds:generate"

payload = {
    "world_prompt": {
        "disable_recaption": True,
        "text_prompt": "<string>",
        "type": "text"
    },
    "display_name": "<string>",
    "model": "marble-1.1",
    "permission": {
        "allow_id_access": False,
        "allowed_readers": [],
        "allowed_writers": [],
        "public": False
    },
    "seed": 2147483647,
    "tags": ["<string>"]
}
headers = {
    "WLT-Api-Key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'WLT-Api-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    world_prompt: {disable_recaption: true, text_prompt: '<string>', type: 'text'},
    display_name: '<string>',
    model: 'marble-1.1',
    permission: {
      allow_id_access: false,
      allowed_readers: [],
      allowed_writers: [],
      public: false
    },
    seed: 2147483647,
    tags: ['<string>']
  })
};

fetch('https://api.worldlabs.ai/marble/v1/worlds:generate', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.worldlabs.ai/marble/v1/worlds:generate",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'world_prompt' => [
        'disable_recaption' => true,
        'text_prompt' => '<string>',
        'type' => 'text'
    ],
    'display_name' => '<string>',
    'model' => 'marble-1.1',
    'permission' => [
        'allow_id_access' => false,
        'allowed_readers' => [
                
        ],
        'allowed_writers' => [
                
        ],
        'public' => false
    ],
    'seed' => 2147483647,
    'tags' => [
        '<string>'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "WLT-Api-Key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.worldlabs.ai/marble/v1/worlds:generate"

	payload := strings.NewReader("{\n  \"world_prompt\": {\n    \"disable_recaption\": true,\n    \"text_prompt\": \"<string>\",\n    \"type\": \"text\"\n  },\n  \"display_name\": \"<string>\",\n  \"model\": \"marble-1.1\",\n  \"permission\": {\n    \"allow_id_access\": false,\n    \"allowed_readers\": [],\n    \"allowed_writers\": [],\n    \"public\": false\n  },\n  \"seed\": 2147483647,\n  \"tags\": [\n    \"<string>\"\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("WLT-Api-Key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.worldlabs.ai/marble/v1/worlds:generate")
  .header("WLT-Api-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"world_prompt\": {\n    \"disable_recaption\": true,\n    \"text_prompt\": \"<string>\",\n    \"type\": \"text\"\n  },\n  \"display_name\": \"<string>\",\n  \"model\": \"marble-1.1\",\n  \"permission\": {\n    \"allow_id_access\": false,\n    \"allowed_readers\": [],\n    \"allowed_writers\": [],\n    \"public\": false\n  },\n  \"seed\": 2147483647,\n  \"tags\": [\n    \"<string>\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.worldlabs.ai/marble/v1/worlds:generate")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["WLT-Api-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"world_prompt\": {\n    \"disable_recaption\": true,\n    \"text_prompt\": \"<string>\",\n    \"type\": \"text\"\n  },\n  \"display_name\": \"<string>\",\n  \"model\": \"marble-1.1\",\n  \"permission\": {\n    \"allow_id_access\": false,\n    \"allowed_readers\": [],\n    \"allowed_writers\": [],\n    \"public\": false\n  },\n  \"seed\": 2147483647,\n  \"tags\": [\n    \"<string>\"\n  ]\n}"

response = http.request(request)
puts response.read_body

{
  "done": true,
  "operation_id": "<string>",
  "cost": {
    "total_credits": 123,
    "line_items": [
      {
        "credits": 123,
        "name": "<string>"
      }
    ]
  },
  "created_at": "2023-11-07T05:31:56Z",
  "error": {
    "code": 123,
    "message": "<string>"
  },
  "expires_at": "2023-11-07T05:31:56Z",
  "metadata": {},
  "response": "<unknown>",
  "updated_at": "2023-11-07T05:31:56Z"
}

{
  "detail": "Insufficient API credits to start this request. Add credits or enable auto-refill at https://platform.worldlabs.ai/billing."
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}

Get started

Examples

Reference

Support & billing

Generate a world

Authorizations

Body

Response