GET

/v1/schemas/fal/image/rundiffusion-fal/juggernaut-flux/base

Accept:

kind inputactivity imagehash ed7ffc7e…extracted Aug 9, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. Source trace `8a04107985e322cc8d82579f334a1c37a44e57ae35f497faf5bad7200e24659d` { "fetchedAt": 1786251757, "extractorVersion": "1", "verifiedAt": null }

Request body

9 properties · 1 required · 1 $defs

property	type	description	constraints
prompt*	string	The prompt to generate an image from.
output_format	enum	The format of the generated image.	jpeg \| png · default: "png"
sync_mode	boolean	If `True`, the media will be returned as a data URI and the output data won't be available in the request history.	default: false
num_inference_steps	integer	The number of inference steps to perform.	1 ≤ n ≤ 50 · default: 28
seed	integer	The same seed and the same prompt given to the same version of the model will output the same image every time.	nullable
num_images	integer	The number of images to generate.	1 ≤ n ≤ 4 · default: 1
enable_safety_checker	boolean	If set to true, the safety checker will be enabled. Disabling it requires account authorization; unauthorized requests are always checked, and images flagged as unsafe are returned as black images.	default: true
image_size	ImageSize \| enum	The size of the generated image.	default: "landscape_4_3"
guidance_scale	number	The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt when looking for a related image to show you.	1 ≤ n ≤ 20 · default: 3.5

Types

1 $defs

ImageSizeobject

height	integer	The height of the generated image.	0 < n ≤ 14142 · default: 512
width	integer	The width of the generated image.	0 < n ≤ 14142 · default: 512

Validate a payload

before you spend tokens

shell

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