GET

/v1/schemas/fal/image/fal-ai/janus

kind inputactivity imagehash b4549b02…extracted Oct 24, 2026version currentsource upstream spec ↗
fieldrecorded source
schemaSource linked above.

upstream-spec

Source trace
87edb1723e2c74ebc551974b3be2670bea61d3f73f3f33e8a84a6ca3fcaf6199
{
  "fetchedAt": 1792818001,
  "extractorVersion": "1",
  "verifiedAt": null
}

Request body

9 properties · 1 required · 1 $defs
propertytypedescriptionconstraints
prompt*stringThe prompt to generate an image from.
temperaturenumberControls randomness in the generation. Higher values make output more random.0.1 ≤ n ≤ 2 · default: 1
sync_modebooleanIf `True`, the media will be returned as a data URI and the output data won't be available in the request history.default: false
seedintegerRandom seed for reproducible generation.nullable
output_formatenumThe format of the generated image.jpeg | png · default: "png"
enable_safety_checkerbooleanIf set to true, the safety checker will be enabled. Disabling it requires account authorization; unauthorized requests are always checked, and images flagged as unsafe are returned as black images.default: true
image_sizeImageSize | enumThe size of the generated image.default: "square"
cfg_weightnumberClassifier Free Guidance scale - how closely to follow the prompt.1 ≤ n ≤ 20 · default: 5
num_imagesintegerNumber of images to generate in parallel.1 ≤ n ≤ 16 · default: 1

Types

1 $defs

ImageSizeobject

heightintegerThe height of the generated image.0 < n ≤ 14142 · default: 512
widthintegerThe width of the generated image.0 < n ≤ 14142 · default: 512

Validate a payload

before you spend tokens
shell
$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"fal-ai/janus","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}