GET

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

Accept:

kind outputactivity imagehash d7eba202…extracted Oct 27, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. upstream-spec Source trace `a48af1e18f385f95e673d7b5f0ec0834833c8e87fe6098f4fc0518e3e40959dc` { "fetchedAt": 1793077201, "extractorVersion": "1", "verifiedAt": null }

Response body

5 properties · 5 required · 1 $defs

property	type	description
has_nsfw_concepts*	boolean[]	Whether the generated images contain NSFW concepts.
timings*	object	The timings of the generation process.
prompt*	string	The prompt used for generating the image.
images*	ImageFile[]	The generated images.
seed*	integer	Seed used to generate the first image.

Types

1 $defs

ImageFileobject

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
height	integer	The height of the image	nullable
width	integer	The width of the image	nullable
content_type	string	The mime type of the file.	nullable

Validate a payload

before you spend tokens

shell

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