API Pubblica

Genera video e immagini dai tuoi strumenti

Crea una chiave, chiama l'API con autenticazione Bearer e verifica lo stato del task finché il risultato non è pronto. Funziona con Claude Code, Codex e qualsiasi client HTTP.

Gestisci chiavi

Avvio rapido

  1. 1

    Crea una chiave

    Genera una chiave API nella tua dashboard. Viene mostrata una sola volta, quindi conservala in un posto sicuro.

  2. 2

    Chiama l'API

    Invia una richiesta POST con la tua chiave Bearer e un header Idempotency-Key.

    curl -X POST https://www.seedance2ai.io/api/v1/video/seedance2 \
      -H "Authorization: Bearer $SEEDANCE_API_KEY" \
      -H "Content-Type: application/json" \
      -H "Idempotency-Key: demo-video-001" \
      -d '{
        "mode": "text-to-video",
        "quality_tier": "standard",
        "prompt": "A cinematic shot of a glass train crossing a snowy mountain bridge",
        "aspect_ratio": "16:9",
        "duration": "5",
        "resolution": "720p"
      }'
  3. 3

    Verifica il risultato

    Interroga l'endpoint dello stato dell'attività finché lo stato non è completato o fallito, poi leggi l'output.

    while true; do
      TASK=$(curl -s https://www.seedance2ai.io/api/v1/tasks/sd2_xxxxx \
        -H "Authorization: Bearer $SEEDANCE_API_KEY")
      STATUS=$(echo "$TASK" | jq -r '.status')
      if [ "$STATUS" = "completed" ] || [ "$STATUS" = "failed" ]; then
        echo "$TASK" | jq
        break
      fi
      sleep 10
    done

Autenticazione

Ogni richiesta viene autenticata con una chiave API Bearer nell'header Authorization.

Base URL
https://www.seedance2ai.io/api/v1
Idempotency-Key
Send a unique value with every POST. Retrying with the same key and body within 24 hours returns the original task instead of charging for a second one.
Credits
Calls spend credits from the key owner's personal balance. Team credits are not used.
Media URLs
Reference images, videos and audio must be public HTTPS URLs that can be fetched without cookies or a login.
http
Authorization: Bearer sk_live_your_api_key
Content-Type: application/json
Idempotency-Key: a-unique-id-per-request

Seedance 2.0 Video

Testo, immagine o media in video.

Modes
Text, image, reference media
Duration
4 to 15 seconds
Quality tiers
mini, standard, pro
Task ID
sd2_…
1

Invia lavoro

POST
/api/v1/video/seedance2

Parametri

  • modestringOpzionalePredefinito text-to-video

    Generation mode.

    text-to-videoimage-to-videomedia-to-video
  • quality_tierstringOpzionalePredefinito standard

    Quality tier.

    ministandardpro
  • channelstringOpzionalePredefinito standard

    Rendering channel.

    standardrealwild
  • promptstringObbligatorio

    Text prompt.

    3–10000 chars
  • aspect_ratiostringOpzionalePredefinito 16:9

    Aspect ratio.

    1:121:94:33:416:99:16adaptive
  • durationstringOpzionalePredefinito 5

    Clip duration.

    4–15 (seconds)
  • resolutionstringOpzionalePredefinito 720p

    Output resolution. 1080p-plus and 4k are available on pro only.

    720p1080p1080p-plus4k
  • image_urlstring (URL)Opzionale

    Start frame — required for image-to-video.

    public https URL, ≤ 30 MB
  • end_image_urlstring (URL)Opzionale

    Optional end frame.

    public https URL, ≤ 30 MB
  • media_urlsstring[] (URL)Opzionale

    Required for media-to-video. Images are limited to 30 MB; video URLs must support duration probing.

    ≤ 12 public https image/video URLs
  • generate_audiobooleanOpzionalePredefinito true

    Generate an audio track.

    truefalse
  • fixed_lensbooleanOpzionalePredefinito false

    Lock the camera lens.

    truefalse
  • seedintegerOpzionale

    Optional deterministic seed.

    -1 – 4294967295

Seedance prompt guide

Seedance prompts work best as concrete director instructions. Describe the subject, action, scene, camera motion, visual style, and constraints, then map every reference asset to the right API parameter.

  • Use image_url for the opening frame, end_image_url for the closing frame, and media_urls for character, motion, style, source-video, or extension references.
  • Describe asset roles in natural language inside prompt. Do not send raw asset ids, asset:// URLs, or in-app-only labels such as @图片1.
  • For edits say “strictly edit the supplied source video”; for extensions say “continue from the supplied previous clip.”
  • For complex scenes, use ordered shots plus a style and constraint package: stable faces, natural motion, no deformation, no watermark, no logo, and no subtitles unless intended.

Richiesta

curl -X POST https://www.seedance2ai.io/api/v1/video/seedance2 \
  -H "Authorization: Bearer $SEEDANCE_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: demo-video-001" \
  -d '{
    "mode": "text-to-video",
    "quality_tier": "standard",
    "prompt": "A cinematic shot of a glass train crossing a snowy mountain bridge",
    "aspect_ratio": "16:9",
    "duration": "5",
    "resolution": "720p"
  }'

Risposta202

json
{
  "id": "sd2_xxxxx",
  "status": "processing",
  "model": "seedance2",
  "quality_tier": "standard",
  "channel": "standard",
  "credits_used": 30
}

I valori credits_used mostrati in questi esempi sono illustrativi. Il consumo effettivo viene calcolato all’invio e restituito dall’API.

2

Controlla lo stato dell'attività

GET
/api/v1/tasks/{id}

status

processing
Accepted and running. Keep polling.
completed
Finished. Read output, or result_urls for a flat list of files.
failed
Ended without a result. error says why and credits_refunded shows what was returned.

Poll every 10 seconds or so and stop at completed or failed. Status reads have their own rate limit, so polling never uses up your submit budget.

Richiesta

curl https://www.seedance2ai.io/api/v1/tasks/sd2_xxxxx \
  -H "Authorization: Bearer $SEEDANCE_API_KEY"

Risposta200

json
{
  "id": "sd2_xxxxx",
  "type": "video",
  "status": "completed",
  "model": "seedance2",
  "quality_tier": "standard",
  "channel": "standard",
  "resolution": "720p",
  "credits_used": 30,
  "credits_refunded": 0,
  "output": {
    "video_url": "https://...",
    "last_frame_url": "https://...",
    "seed": 123
  },
  "result_urls": ["https://..."],
  "error": null,
  "created_at": "2026-06-03T10:00:00.000Z",
  "updated_at": "2026-06-03T10:03:12.000Z"
}

Wait for the result

while true; do
  TASK=$(curl -s https://www.seedance2ai.io/api/v1/tasks/sd2_xxxxx \
    -H "Authorization: Bearer $SEEDANCE_API_KEY")
  STATUS=$(echo "$TASK" | jq -r '.status')
  if [ "$STATUS" = "completed" ] || [ "$STATUS" = "failed" ]; then
    echo "$TASK" | jq
    break
  fi
  sleep 10
done

Tasks and balance

Read endpoints for building a task history, showing remaining credits, or discovering models at runtime. They share the read rate limit.

List tasks

GET
/api/v1/tasks

Returns the tasks this account created through the API in the last 30 days, newest first. Each item has the same shape as a single task. Use limit (1 to 50, default 20) and pass next_cursor as before to fetch the next page.

curl "https://www.seedance2ai.io/api/v1/tasks?limit=20" \
  -H "Authorization: Bearer $SEEDANCE_API_KEY"
json
{
  "data": [
    {
      "id": "sd2_xxxxx",
      "type": "video",
      "status": "completed",
      "model": "seedance2",
      "credits_used": 30,
      "result_urls": ["https://..."]
    }
  ],
  "has_more": false,
  "next_cursor": null
}

Check balance

GET
/api/v1/balance

Returns the credits the key owner can spend through the API. subscription_credits is the part that came from a plan and expires at subscription_credits_expire_at.

curl "https://www.seedance2ai.io/api/v1/balance" \
  -H "Authorization: Bearer $SEEDANCE_API_KEY"
json
{
  "credits": 1200,
  "subscription_credits": 1000,
  "subscription_credits_expire_at": "2026-07-01T00:00:00.000Z"
}

List models

GET
/api/v1/models

Returns every model the API serves with its endpoint, accepted modes and task ID prefix. Useful for building a model picker without hard-coding this page.

curl "https://www.seedance2ai.io/api/v1/models" \
  -H "Authorization: Bearer $SEEDANCE_API_KEY"
json
{
  "data": [
    {
      "id": "seedance2",
      "name": "Seedance 2.0",
      "type": "video",
      "method": "POST",
      "endpoint": "/api/v1/video/seedance2",
      "modes": ["text-to-video", "image-to-video", "media-to-video"],
      "task_id_prefix": "sd2_"
    }
  ]
}

Codici di errore

Every error has the same shape. Branch on code, and show message to a person. A task that was accepted can still fail later, so also check status when you poll.

json
{
  "error": {
    "code": "invalid_request",
    "message": "Invalid request body: prompt: String must contain at least 3 character(s)"
  }
}
CodiceHTTPSignificato
unauthorized401Missing, invalid, or revoked API key.
invalid_request400Bad input or unsupported field. The message names the first field that failed; details lists them all.
purchase_required403Seedance 2.5 requires a successful credits or plan purchase; free promotional credits alone do not unlock it. The GPT Image 2.5 economy channel has the same requirement.
insufficient_credits402Not enough credits. Seedance 2.5 always returns HTTP 402 with insufficient_credits; when an authoritative quote is available, it may also include required_credits, available_credits, pricing_version, and promotion_applied.
rate_limited429Too many requests for this account. See Rate limits below. Seedance requests that validate reference media are limited to 3 per 60 seconds per account and source IP, with a project-wide safety cap. Retry after the Retry-After response header (in seconds).
idempotency_conflict409Same Idempotency-Key reused with a different body, or still running.
service_busy503Temporary upstream or credit-concurrency issue. Retry.
not_found404Task does not exist or does not belong to this key owner.
internal_error500Unexpected server-side failure.

Rate limits

A request over the limit returns HTTP 429 with a Retry-After header in seconds, plus X-RateLimit-Limit and X-RateLimit-Reset. Wait that long, then retry with the same Idempotency-Key.

Submit a job
30 per 60 seconds
Every POST endpoint, counted per account across all of its keys.
Read
120 per 60 seconds
Task status, task list, balance and models. Counted separately, so polling never uses up the submit budget.
Reference media validation
3 per 60 seconds
Seedance requests that include reference media, per account and source IP.

Usa con Claude Code

Usa Copy for AI per esportare l'intera API come Markdown pulito, incollalo in Claude Code o Codex e lascia che l'agente configuri l'integrazione. Oppure punta l'agente direttamente all'endpoint di testo grezzo.

Skill

Installa la skill Seedance in Claude Code, Codex o qualsiasi altro agente: scrive prompt cinematografici e li renderizza tramite API per te.

bash
# Download the one-file skill from Seedance 2.0 AI
mkdir -p ~/.claude/skills/seedance
curl --fail --location -H "Authorization: Bearer $SEEDANCE_API_KEY" https://www.seedance2ai.io/downloads/seedance-skill.md -o ~/.claude/skills/seedance/SKILL.md.tmp &&
mv ~/.claude/skills/seedance/SKILL.md.tmp ~/.claude/skills/seedance/SKILL.md

FAQ

Chi può usare l'API?
Chiunque abbia crediti. Non c'è alcun blocco basato sul piano — qualsiasi account con crediti può creare una chiave e chiamare l'API.
Come posso ottenere crediti?
Ricarica o abbonati nella pagina dei prezzi. I crediti vengono aggiunti al tuo saldo istantaneamente.
I crediti sono condivisi tra il sito web e l'API?
Sì — il tuo saldo crediti personale alimenta sia la generazione web sia le chiamate API. In un team, le chiamate API utilizzano il saldo personale di ciascun membro, non quello condiviso del team.
Come faccio a iniziare?
Crea una chiave API nella tua dashboard, poi chiama gli endpoint con un token Bearer (vedi Quickstart sopra).
E se una chiamata restituisce insufficient_credits?
Il tuo saldo è vuoto — ricarica sulla pagina dei prezzi e riprova.