GET
/v1/schemas/fal/image/fal-ai/fast-sdxl
Accept:
| field | recorded source |
|---|---|
| schema | Source linked above. upstream-spec Source trace681cb5a69543955b322f5350ebe8c58de4fbdcc3212be39154f0c58cc0874e5b{
"fetchedAt": 1793250001,
"extractorVersion": "1",
"verifiedAt": null
} |
Request body
15 properties · 1 required · 3 $defs| property | type | description | constraints |
|---|---|---|---|
| prompt* | string | The prompt to use for generating the image. Be as descriptive as possible for best results. | |
| 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 |
| image_size | ImageSize | enum | The size of the generated image. | default: "square_hd" |
| safety_checker_version | enum | The version of the safety checker to use. v1 is the default CompVis safety checker. v2 uses a custom ViT model. | v1 | v2 · default: "v1" |
| 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: 7.5 |
| request_id | string | An id bound to a request, can be used with response to identify the request itself. | default: "" |
| format | enum | The format of the generated image. | jpeg | png · default: "jpeg" |
| negative_prompt | string | The 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: "" |
| num_inference_steps | integer | The number of inference steps to perform. | 1 ≤ n ≤ 50 · default: 25 |
| enable_safety_checker | boolean | If set to true, the safety checker will be enabled. | default: true |
| embeddings | Embedding[] | The list of embeddings to use. | default: [] |
| loras | LoraWeight[] | The list of LoRA weights to use. | default: [] |
| num_images | integer | The number of images to generate. | 1 ≤ n ≤ 8 · default: 1 |
| enable_prompt_expansion | boolean | If set to true, the prompt will be expanded with additional prompts. | default: false |
| 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
3 $defsEmbeddingobject
| tokens | string[] | The list of tokens to use for the embedding. When omitted, tokens are generated as <s0>, <s1>, ... to match the number of vectors in the embedding file. | nullable |
| path* | string | URL or the path to the embedding weights. |
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
| path* | string | URL or path to a LoRA safetensors file. Or HF model name that resolves to safetensors weights. | |
| force | boolean | If set to true, the embedding will be forced to be used. | default: false |
| 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 ≤ 1 · default: 1 |
Validate a payload
before you spend tokensshell
$ curl -X POST https://modelschemas.com/v1/validate \
-d '{"provider":"fal","endpointId":"fal-ai/fast-sdxl","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}