GET

/v1/schemas/fal/image/fal-ai/flux-2-flex?kind=output

Accept:

kind outputactivity imagehash d1748eb5…extracted Jul 6, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. Source trace `a9a1ae7ce76565d69ae2dec333a3a89c1f44279384f782f0b209effbf6bea766` { "fetchedAt": 1783329487, "extractorVersion": "1", "verifiedAt": null }

Response body

2 properties · 2 required · 1 $defs

property	type	description	constraints
images*	ImageFile[]	The generated images.
seed*	integer	The seed used for the generation.

Types

1 $defs

ImageFileobject

file_name	string	The name of the file. It will be auto-generated if not provided.	nullable
content_type	string	The mime type of the file.	nullable
height	integer	The height of the image	nullable
url*	string	The URL where the file can be downloaded from.
file_size	integer	The size of the file in bytes.	nullable
width	integer	The width of the image	nullable

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"fal-ai/flux-2-flex","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}