GET

/v1/schemas/fal/image/fal-ai/stable-diffusion-v35-medium

kind inputactivity imagehash faa91632…extracted Aug 10, 2026version currentsource upstream spec ↗
fieldrecorded source
schemaSource linked above.
Source trace
1746f1cd10d0dcdf2d695de861ce04e28c9a2e15b91f4d1616b94df009240a84
{
  "fetchedAt": 1786338105,
  "extractorVersion": "1",
  "verifiedAt": null
}

Request body

11 properties · 1 required · 1 $defs
propertytypedescriptionconstraints
prompt*stringThe prompt to generate an image from.
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
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
negative_promptstringThe negative prompt to use. Use it to address details that you don't want in the image. This could be colors, objects, scenery and even the small details (e.g. moustache, blurry, low resolution).default: ""
image_sizeImageSize | enumThe size of the generated image.default: "landscape_4_3"
num_imagesintegerThe number of images to generate.1 ≤ n ≤ 4 · default: 1
output_formatenumThe format of the generated image.jpeg | png · default: "jpeg"
auto_fixbooleanIf true (default), the requested `image_size` is silently rounded to the nearest compatible value for this model. If false, the request returns a 422 error when the requested `image_size` is not directly compatible.default: true
num_inference_stepsintegerThe number of inference steps to perform.1 ≤ n ≤ 50 · default: 40
seedinteger The same seed and the same prompt given to the same version of the model will output the same image every time. nullable
guidance_scalenumberThe CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt when looking for a related image to show you.0 ≤ n ≤ 20 · default: 4.5

Types

1 $defs

ImageSizeobject

widthintegerThe width of the generated image.0 < n ≤ 14142 · default: 512
heightintegerThe height 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/stable-diffusion-v35-medium","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}