GET

/v1/schemas/fal/image/blackforestlabs/flux-3/edit-image

kind inputactivity imagehash dde7ecac…extracted Oct 23, 2026version currentsource upstream spec ↗
fieldrecorded source
schemaSource linked above.

upstream-spec

Source trace
2de719a4b5239c5777d09d13c207a1961a13c05e5c756c54be58bf36fbbaaf2b
{
  "fetchedAt": 1792731610,
  "extractorVersion": "1",
  "verifiedAt": null
}

Request body

9 properties · 2 required · 0 $defs
propertytypedescriptionconstraints
prompt*stringThe prompt to generate an image from.
image_urls*string[]Reference image URLs or data URIs, in image 1 through image 10 order. Each must be at least 256 pixels per dimension. Oversized images are automatically downscaled to at most 4 megapixels while preserving aspect ratio. The first controls auto aspect ratio.items ≥ 1 · items ≤ 10
versionconstThe model version."latest" · default: "latest"
safety_toleranceintegerSafety tolerance, from 0 (strictest) to 4.0 ≤ n ≤ 4 · default: 2
resolutionenumOutput resolution tier. 4k can take several minutes.768sq | 1k | 1.5k | 2k | 4k · default: "1k"
sync_modebooleanReturn the image as a data URI instead of storing it in request history.default: false
aspect_ratioenumOutput aspect ratio. Auto uses the first reference image when editing.auto | 21:9 | 2:1 | 16:9 | 3:2 | 7:5 · +9 more · default: "auto"
enable_prompt_expansionbooleanExpand the prompt while preserving its intent and reference roles.default: false
output_formatenumThe format of the generated image.jpeg | png · default: "jpeg"

Validate a payload

before you spend tokens
shell
$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"blackforestlabs/flux-3/edit-image","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}