GET
/v1/schemas/fal/image/fal-ai/stable-diffusion-v3-medium/image-to-image
Accept:
| field | recorded source |
|---|---|
| schema | Source linked above. upstream-spec Source trace56a2ecb3cb1e1bf230721fa4befa298117b01d328e5f5c4fedf77fba30bca1ed{
"fetchedAt": 1786770058,
"extractorVersion": "1",
"verifiedAt": null
} |
Request body
12 properties · 2 required · 1 $defs| property | type | description | constraints |
|---|---|---|---|
| prompt* | string | The prompt to generate an image from. | |
| image_url* | string | The image URL to generate an image from. | |
| image_size | ImageSize | enum | The size of the generated image. Defaults to the conditioning image's size. | nullable |
| prompt_expansion | boolean | If set to true, prompt will be upsampled with more details. | default: false |
| negative_prompt | string | The negative prompt to generate an image from. | default: "" |
| 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 |
| seed | integer | The same seed and the same prompt given to the same version of Stable Diffusion will output the same image every time. | nullable |
| strength | number | The strength of the image-to-image transformation. | 0.01 ≤ n ≤ 1 · default: 0.9 |
| 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 ≤ 20 · default: 5 |
| num_images | integer | The number of images to generate. | 1 ≤ n ≤ 4 · default: 1 |
| num_inference_steps | integer | The number of inference steps to perform. | 1 ≤ n ≤ 50 · default: 28 |
| 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 |
Types
1 $defsImageSizeobject
| width | integer | The width of the generated image. | 0 < n ≤ 14142 · default: 512 |
| height | integer | The height of the generated image. | 0 < n ≤ 14142 · default: 512 |
Validate a payload
before you spend tokensshell
$ curl -X POST https://modelschemas.com/v1/validate \
-d '{"provider":"fal","endpointId":"fal-ai/stable-diffusion-v3-medium/image-to-image","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}