GET

/v1/schemas/fal/image/blackforestlabs/flux-3/text-to-image?kind=output

Accept:

kind outputactivity imagehash 9ed2eb21…extracted Oct 2, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. upstream-spec Source trace `f99f85fb2ee4ce80f214de24f604af762ce575855f4e6052987b5a41ffef8a39` { "fetchedAt": 1790917249, "extractorVersion": "1", "verifiedAt": null }

Response body

1 properties · 1 required · 1 $defs

property	type	description	constraints
images*	ImageFile[]	The generated image.

Types

1 $defs

ImageFileobject

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

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"blackforestlabs/flux-3/text-to-image","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}