GET

/v1/schemas/stability/image/v2beta/stable-image/generate/core

kind inputactivity imagehash 5aea49ac…extracted Sep 16, 2026version currentsource upstream spec ↗
fieldrecorded source
schemaSource linked above.

upstream-spec

Source trace
1ea5455da5ce2efef103daa142cc44a3e70b4fb3cfcdfa0c9a6a6f46d93912ea
{
  "fetchedAt": 1789536057,
  "extractorVersion": "1",
  "verifiedAt": null
}

Request body

6 properties · 1 required · 5 $defs
propertytypedescriptionconstraints
prompt*stringWhat you wish to see in the output image. A strong, descriptive prompt that clearly defines elements, colors, and subjects will lead to better results.length ≥ 1 · length ≤ 10000
aspect_ratioenumControls the aspect ratio of the generated image.21:9 | 16:9 | 3:2 | 5:4 | 1:1 | 4:5 · +3 more · default: "1:1"
negative_promptstringA blurb of text describing what you **do not** wish to see in the output image. This is an advanced feature.length ≤ 10000
seednumberA specific value that is used to guide the 'randomness' of the generation. (Omit this parameter or pass `0` to use a random seed.)0 ≤ n ≤ 4294967294 · default: 0
style_presetenumGuides the image model towards a particular style.enhance | anime | photographic | digital-art | comic-book | fantasy-art · +11 more
output_formatenumDictates the `content-type` of the generated image.png | jpeg | webp · default: "png"

Types

5 $defs

AspectRatioenum

Controls the aspect ratio of the generated image.

21:9 | 16:9 | 3:2 | 5:4 | 1:1 | 4:5 · +3 more · default: "1:1"

NegativePromptstring

A blurb of text describing what you **do not** wish to see in the output image. This is an advanced feature.

length ≤ 10000

Promptstring

What you wish to see in the output image. A strong, descriptive prompt that clearly defines elements, colors, and subjects will lead to better results.

length ≥ 1 · length ≤ 10000

Seednumber

A specific value that is used to guide the 'randomness' of the generation. (Omit this parameter or pass `0` to use a random seed.)

0 ≤ n ≤ 4294967294 · default: 0

StylePresetenum

Guides the image model towards a particular style.

enhance | anime | photographic | digital-art | comic-book | fantasy-art · +11 more

Validate a payload

before you spend tokens
shell
$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"stability","endpointId":"v2beta/stable-image/generate/core","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}