GET

/v1/schemas/fal/image/fal-ai/fast-sdxl?kind=output

kind outputactivity imagehash d996bfb4…extracted Jul 6, 2026version currentsource upstream spec ↗
fieldrecorded source
schemaSource linked above.
Source trace
56c58085c2d6eb18494ad840897630b94b6dc0b596371ade57394b5f2a6fb115
{
  "fetchedAt": 1783329138,
  "extractorVersion": "1",
  "verifiedAt": null
}

Response body

5 properties · 5 required · 1 $defs
propertytypedescriptionconstraints
seed*integerSeed of the generated Image. It will be the same value of the one passed in the input or the randomly generated that was used in case none was passed.
timings*object
images*Image[]The generated image files info.
has_nsfw_concepts*boolean[]Whether the generated images contain NSFW concepts.
prompt*stringThe prompt used for generating the image.

Types

1 $defs

Imageobject

height*integer
content_typestringnullable
width*integer
url*string

Validate a payload

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