GET

/v1/schemas/fal/image/fal-ai/flux/dev?kind=output

kind outputactivity imagehash d996bfb4…extracted Jul 6, 2026version currentsource upstream spec ↗
fieldrecorded source
schemaSource linked above.
Source trace
2e0f706be156c663036ccaa3af289e4932b6ed8570cfa24ecb6e4cde38c5bfd9
{
  "fetchedAt": 1783328807,
  "extractorVersion": "1",
  "verifiedAt": null
}

Response body

5 properties · 5 required · 1 $defs
propertytypedescriptionconstraints
timings*object
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.
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
url*string
width*integer

Validate a payload

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