Sketch to Design API

From a fashion sketch to a photorealistic creation: send the drawing, get the finished piece.

POST/v1/generateworkflow: sketch_to_image-v1

One endpoint serves every workflow — this page documents sketch_to_image-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	"sketch_to_image-v1" required
sketch_image	Your sketch — one public HTTPS URL.required
fields.outfit	Outfit description. The garment or outfit you imagine, e.g. "beige haute couture cropped jacket".Defaults to “Beige haute couture cropped jacket”.
ratio	auto · 9:16 · 1:1 · 4:5 · 3:4 · 2:3 · 16:9 · 4:3 · 3:2 · 5:4 · 21:9
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": "sketch_to_image-v1",
    "sketch_image": "https://example.com/sketch.jpg",
    "fields": {
      "outfit": "beige haute couture cropped jacket"
    },
    "ratio": "auto",
    "tier": "standard"
  }'

Example response

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

// 200 OK
{
  "generation_id": "3f1c9a6e-...",
  "workflow": "sketch_to_image",
  "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

What sketches does the endpoint accept?

Hand drawings, technical flats or digital sketches — any clear line work of the garment, as a public image URL.

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.

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