GET
/v1/schemas/fal/image/fal-ai/flux-2/klein/9b/base/lora
Accept:
| field | recorded source |
|---|---|
| schema | Source linked above. upstream-spec Source tracea7d2b40b10c0e401e936ea3a53381cb267a964b7672faa8b2c42a0c422b101be{
"fetchedAt": 1794546001,
"extractorVersion": "2",
"verifiedAt": null
} |
Request body
12 properties · 1 required · 2 $defs| property | type | description | constraints |
|---|---|---|---|
| prompt* | string | The prompt to generate an image from. | |
| 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 |
| output_format | enum | The format of the generated image. | jpeg | png | webp · default: "png" |
| image_size | ImageSize | enum | The size of the image to generate. | default: "landscape_4_3" |
| num_inference_steps | integer | The number of inference steps to perform. | 4 ≤ n ≤ 50 · default: 28 |
| negative_prompt | string | Negative prompt for classifier-free guidance. Describes what to avoid in the image. | default: "" |
| seed | integer | The seed to use for the generation. If not provided, a random seed will be used. | nullable |
| acceleration | enum | The acceleration level to use for image generation. | none | regular | high · default: "regular" |
| loras | fal-ai_flux-2-klein_LoRAInput[] | List of LoRA weights to apply (maximum 3). | items ≤ 3 · default: [] |
| sync_mode | boolean | If `True`, the media will be returned as a data URI. Output is not stored when this is True. | default: false |
| guidance_scale | number | Guidance scale for classifier-free guidance. | 0 ≤ n ≤ 20 · default: 5 |
| num_images | integer | The number of images to generate. | 1 ≤ n ≤ 4 · default: 1 |
Types
2 $defsfal-ai_flux-2-klein_LoRAInputobject
| scale | number | Scale factor for LoRA application (0.0 to 4.0). | 0 ≤ n ≤ 4 · default: 1 |
| path* | string | URL or HuggingFace repo ID (owner/repo) of the LoRA weights. |
ImageSizeobject
| 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/flux-2/klein/9b/base/lora","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}