GET

/v1/schemas/fal/image/fal-ai/fooocus/upscale-or-vary

kind inputactivity imagehash 85072702…extracted Nov 11, 2026version currentsource upstream spec ↗
fieldrecorded source
schemaSource linked above.

upstream-spec

Source trace
eab242e532671ad8515cb6a19b63c01bffaf7fb55a3afdc16f472334d2cedc76
{
  "fetchedAt": 1794373202,
  "extractorVersion": "2",
  "verifiedAt": null
}

Request body

22 properties · 1 required · 2 $defs
propertytypedescriptionconstraints
uov_image_url*stringThe image to upscale or vary.
seedinteger The same seed and the same prompt given to the same version of Stable Diffusion will output the same image every time. nullable
guidance_scalenumberThe 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 ≤ 30 · default: 4
aspect_ratiostringThe size of the generated image. You can choose between some presets or custom height and width that **must be multiples of 8**.default: "1024x1024"
performanceenumYou can choose Speed or QualitySpeed | Quality | Extreme Speed | Lightning · default: "Extreme Speed"
enable_safety_checkerbooleanIf set to false, the safety checker will be disabled.default: true
num_imagesintegerNumber of images to generate in one request1 ≤ n ≤ 4 · default: 1
image_prompt_4ImagePrompt
image_prompt_2ImagePrompt
refiner_modelenumRefiner (SDXL or SD 1.5)None | realisticVisionV60B1_v51VAE.saf… · default: "None"
refiner_switchnumberUse 0.4 for SD1.5 realistic models; 0.667 for SD1.5 anime models 0.8 for XL-refiners; or any value for switching two SDXL models.0 ≤ n ≤ 1 · default: 0.8
sync_modebooleanIf `True`, the media will be returned as a data URI and the output data won't be available in the request history.default: false
image_prompt_3ImagePrompt
promptstringThe prompt to use for generating the image. Be as descriptive as possible for best results.default: ""
stylesenum[]The style to use.default: ["Fooocus V2","Fooocus Enhance",…
uov_methodenumThe method to use for upscaling or varying.Disabled | Vary (Subtle) | Vary (Strong) | Upscale (1.5x) | Upscale (2x) | Upscale (Fast 2x) · default: "Vary (Strong)"
output_formatenumThe format of the generated image.png | jpeg | webp · default: "jpeg"
image_prompt_1ImagePrompt
lorasLoraWeight[]The LoRAs to use for the image generation. You can use up to 5 LoRAs and they will be merged together to generate the final image.default: [{"path":"https://huggingface.co…
negative_promptstringThe negative prompt to use. Use it to address details that you don't want in the image. This could be colors, objects, scenery and even the small details (e.g. moustache, blurry, low resolution).default: ""
sharpnessnumberThe sharpness of the generated image. Use it to control how sharp the generated image should be. Higher value means image and texture are sharper.0 ≤ n ≤ 30 · default: 2
mixing_image_prompt_and_vary_upscalebooleanMixing Image Prompt and Vary/Upscaledefault: false

Types

2 $defs

ImagePromptobject

typeenumImagePrompt | PyraCanny | CPDS | FaceSwap · default: "ImagePrompt"
image_urlstringnullable
weightnumber0 ≤ n ≤ 2 · default: 1
stop_atnumber0 ≤ n ≤ 1 · default: 0.5

LoraWeightobject

path*stringURL or the path to the LoRA weights.
scalenumberThe scale of the LoRA weight. This is used to scale the LoRA weight before merging it with the base model.0 ≤ n ≤ 1 · default: 0.1

Validate a payload

before you spend tokens
shell
$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"fal-ai/fooocus/upscale-or-vary","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}