GET

/v1/schemas/fal/image/fal-ai/flux-lora/image-to-image

Accept:

kind inputactivity imagehash 0e2e8460…extracted Oct 28, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. upstream-spec Source trace `9e477a6cf21da772de41280756a07ecd3a4a8b8807464fe668bb4fadaed79a6a` { "fetchedAt": 1793163602, "extractorVersion": "1", "verifiedAt": null }

Request body

13 properties · 2 required · 2 $defs

property	type	description	constraints
image_url*	string	URL of image to use for inpainting. or img2img
prompt*	string	The prompt to generate an image from.
acceleration	enum	Acceleration level for image generation. 'regular' balances speed and quality.	none \| regular · default: "none"
num_images	integer	The number of images to generate. This is always set to 1 for streaming output.	1 ≤ n ≤ 4 · default: 1
image_size	ImageSize \| enum	The size of the generated image.
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
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
loras	LoraWeight[]	The LoRAs to use for the image generation. You can use any number of LoRAs and they will be merged together to generate the final image.	default: []
output_format	enum	The format of the generated image.	jpeg \| png · default: "jpeg"
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
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.	0 ≤ n ≤ 35 · default: 3.5
num_inference_steps	integer	The number of inference steps to perform.	1 ≤ n ≤ 50 · default: 28
strength	number	The strength to use for inpainting/image-to-image. Only used if the image_url is provided. 1.0 is completely remakes the image while 0.0 preserves the original.	0.01 ≤ n ≤ 1 · default: 0.85

Types

2 $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

LoraWeightobject

scale	number	The scale of the LoRA weight. This is used to scale the LoRA weight before merging it with the base model.	0 ≤ n ≤ 4 · default: 1
path*	string	URL or the path to the LoRA weights.

Validate a payload

before you spend tokens

shell

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