GET

/v1/schemas/fal/image/fal-ai%2Fclarity-upscaler

kind inputactivity imagehash 88de1a8fextracted Jul 6, 2026version currentsource upstream spec ↗

Request body

10 properties · 1 required · 0 $defs
propertytypedescriptionconstraints
image_url*stringThe URL of the image to upscale.
seedinteger The same seed and the same prompt given to the same version of Stable Diffusion will output the same image every time. n ≥ 0 · 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.0 ≤ n ≤ 20 · default: 4
upscale_factornumberThe upscale factor1 ≤ n ≤ 4 · default: 2
enable_safety_checkerbooleanIf set to false, the safety checker will be disabled.default: true
negative_promptstringThe negative prompt to use. Use it to address details that you don't want in the image.default: "(worst quality, low quality, no…
promptstringThe prompt to use for generating the image. Be as descriptive as possible for best results.default: "masterpiece, best quality, high…
resemblancenumberThe resemblance of the upscaled image to the original image. The higher the resemblance, the more the model will try to keep the original image. Refers to the strength of the ControlNet.0 ≤ n ≤ 1 · default: 0.6
num_inference_stepsintegerThe number of inference steps to perform.4 ≤ n ≤ 50 · default: 18
creativitynumberThe creativity of the model. The higher the creativity, the more the model will deviate from the prompt. Refers to the denoise strength of the sampling.0 ≤ n ≤ 1 · default: 0.35

Validate a payload

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