Design Variations API

Decline one design into variations: same creation, controlled differences.

POST/v1/generateworkflow: create_design_variations-v1

One endpoint serves every workflow — this page documents create_design_variations-v1, the current version. Credits are debited at submission (1 cr standard, 3 cr pro); a failed generation is refunded automatically. Earlier versions of this endpoint, if any, keep being served under their own names.

Parameter	Value for this workflow
workflow	"create_design_variations-v1" required
reference_image	Reference image — one public HTTPS URL.required
fields.variation	Describe variation. What to vary, e.g. "different collar shapes". Leave it out for free variations.
ratio	21:9 · 16:9 · 3:2 · 4:3 · 5:4 · 1:1 · 4:5 · 3:4 · 2:3 · 9:16
tier	"standard" (1 cr) or "pro" (3 cr)
webhook_url	Optional — we POST the outcome here when the generation settles. Without it, poll the URL returned in the response until the status settles.

Example request

curl -X POST https://thenewblack.ai/api/v1/generate \
  -H "Authorization: Bearer tnb_live_XXXXXXXXXXXX" \
  -H "Content-Type: application/json" \
  -d '{
    "workflow": "create_design_variations-v1",
    "reference_image": "https://example.com/reference.jpg",
    "fields": {
      "variation": "different collar shapes"
    },
    "ratio": "21:9",
    "tier": "standard"
  }'

Example response

Poll /v1/generations/{id} (or receive the webhook) until the generation settles:

// 200 OK
{
  "generation_id": "3f1c9a6e-...",
  "workflow": "create_design_variations",
  "status": "succeeded",
  "result": {
    "type": "image",
    "url": "https://.../result.webp",
    "thumbnail": "https://.../thumb.webp"
  }
}

Results are stored for 48 hours — copy them to your own storage. Authentication, errors and webhooks are documented in the full API reference.

Frequently asked questions

How different are the variations?

As different as the prompt asks — from subtle detail changes to bolder reinterpretations of the same design.

How much does it cost?

1 credit on the standard tier, 3 on pro. Credits come with plans and packs; a failed generation is always refunded.

Affiliation & Blog

Contact

Legal