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Reference · Ads

POST/ugc-ads/quote

Price it: make a UGC video ad: presenters, product, voice and captions

The price for exactly this body, the balance beside it and any notes. Nothing runs and nothing is charged. Run it with POST /api/v1/ugc-ads, the same body, confirmCredits set to credits and the same Idempotency-Key.

Key needs
create · Make things and spend credits
Runs it
POST /ugc-ads
Answers
A quote · free
Request
curl -X POST https://vessero.com/api/v1/ugc-ads/quote \
  -H "Authorization: Bearer $VESSERO_API_KEY" \
  -H "Idempotency-Key: 47f8f6f5-ea00-4fb1-925f-76aac956a0ec" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "@Presenter1 holds @Product1 up to the camera in @Image1 and says: “This serum has fifteen percent vitamin C, and it is light enough to wear under make-up.”",
    "videoModel": "seedance-2.5",
    "presenters": [
      {
        "kind": "pictures",
        "pictureKeys": [
          "https://example.com/people/zola.jpg"
        ],
        "whoIsIn": {
          "kind": "no-person"
        },
        "name": "Zola"
      }
    ],
    "productId": "5e4d3c2b-1a0f-4e9d-8c7b-6a5f4e3d2c1b",
    "pictureKeys": [
      "https://example.com/sets/sunny-kitchen.jpg"
    ],
    "aspect": "9:16",
    "captionStyle": "word-pop"
  }'
Response200 OK
{
  "object": "quote",
  "credits": 12,
  "balance": 840,
  "lines": [
    "1 image × 12 (Nano Banana Pro · 4K)"
  ],
  "notes": [],
  "requestId": "47f8f6f5-ea00-4fb1-925f-76aac956a0ec",
  "run": {
    "method": "POST",
    "path": "/api/v1/images",
    "confirmCredits": 12,
    "idempotencyKey": "47f8f6f5-ea00-4fb1-925f-76aac956a0ec"
  }
}

Header

  • Idempotency-KeystringYour id for this request: 8–64 letters, digits, - or _. A repeat within 10 minutes gets the first answer back and never runs twice. Use the same one for the quote and the run.

Body

  • promptstringrequiredThe words: what happens, and what is said in quotes (straight or curly), naming what is added by its tag, e.g. @Presenter1 holds @Product1 up to the camera in a sunny kitchen and says: “This is the only serum I reach for.”
  • videoModelstringrequiredThe model that makes the clip: an id from GET /api/v1/models (studio "ugc").
  • presenters(object · kind cast | pictures)[] · up to 4Up to 4 people in it, @Presenter1 first: {kind: "cast", castMemberId, voice?}, or {kind: "pictures", pictureKeys, whoIsIn, name?, voice?} for a character they bring.
  • voiceobject · kind own | model | library | recordingThe voice when no presenter is added: the person the model draws speaks in it. Default: the video model’s own.
  • productIdstringThe product, from GET /api/v1/products: its card brings its name, facts and picture.
  • productPictureKeysstring[] · up to 3Up to 3 pictures of the product; with a productId, more sides of it.
  • pictureKeysstring[] · up to 3Up to 3 other pictures — a place, a prop — named @Image1… in the words.
  • lookLikeobjectA video to look like (@Video1): it goes to the model as a reference.
    • keystringrequiredThe video: a storage key from POST /api/v1/files or POST /api/v1/library/use, or an https link to the file (brought into their Uploads first).
    • durationSecnumberIts length in seconds, as GET /api/v1/library (tab "uploads") or POST /api/v1/library/use gives it. Default: read from the file.
    • whoIsInobject · kind no-person | personrequiredWho is in it, as the person says: {kind: "no-person"}, or {kind: "person", name, agreed} for a real person (named, with their permission).
  • pictureModelstring | nullThe model that draws each take’s opening picture, from GET /api/v1/models (studio "ugc", pictureModels). Default: "nano-banana-2-1". null for none: the clip takes the pictures as they are.
  • aspectstringThe shape: 9:16, 4:5, 1:1, 16:9. Default 9:16.9:164:51:116:9
  • resolutionstringA size the video model lists, e.g. "1080p". Default 720p.
  • durationSecintegerA length the video model makes, in seconds. Default: fitted to the words.
  • captionStylestringThe captions, as the Captions menu offers them: none (No captions), auto (Auto), word-pop (Word Pop), impact-slam (Impact Slam), clean-subtitle (Clean Subtitle), editorial-minimal (Editorial), luxury-serif (Luxury Serif), glass-tech (Glass Tech), marker-energy (Marker Energy), retro-collage (Retro Collage). Default none (No captions).noneautoword-popimpact-slamclean-subtitleeditorial-minimalluxury-serifglass-techmarker-energyretro-collage
  • captionSizeintegerHow big the captions are, in per cent of the style's own size, as the Captions panel's Size slider sets it: S 60, M 100, L 130, XL 160, or any whole number between. Default 100.
  • captionPositionstring | numberWhere the captions sit, as the Captions panel sets it: "top" (under the AI label when it is on), "middle", "bottom" (the default, where captions always sat), or the caption block’s centre as a share of the frame’s height, 0–1, kept inside what the platform leaves clear.
  • takesintegerTakes of this one ad, 1–4, each its own video. Default 1.
  • aiLabelbooleanThe "AI-generated" label on every frame, top left. Default false: true only if the person asks for it. Without it, they say it was made with AI where they post it.

Answers

  • 200quoteThe price for exactly this body, your balance and any notes. Nothing ran.
  • 400invalid_requestA field is missing or not accepted: see details.
  • 403feature_unavailableThe studio this needs is switched off for the account right now.
  • 429rate_limitedToo many calls this minute: see Retry-After.
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