anywearSTUDIO
公開API

自分のツールで動画と画像を生成

キーを作成し、Bearer認証でAPIを呼び出して、結果が準備できるまでタスクステータスをポーリングします。Claude Code、Codex、および任意のHTTPクライアントで動作します。

キー管理

クイックスタート

  1. 1

    キー作成

    ダッシュボードでAPIキーを生成してください。一度だけ表示されるため、安全な場所に保存してください。

  2. 2

    APIを呼び出す

    BearerキーとIdempotency-Keyヘッダーを指定してPOSTリクエストを送信します。

    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

    結果のポーリング

    タスクステータスエンドポイントをポーリングし、ステータスが完了または失敗になるまで待ちます。その後、出力を読み取ってください。

    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

認証

すべてのリクエストは、AuthorizationヘッダーにBearer APIキーを指定して認証されます。

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

テキスト、画像、またはメディアから動画へ

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

ジョブを送信

POST
/api/v1/video/seedance2

パラメータ

  • modestring任意デフォルト text-to-video

    Generation mode.

    text-to-videoimage-to-videomedia-to-video
  • quality_tierstring任意デフォルト standard

    Quality tier.

    ministandardpro
  • channelstring任意デフォルト standard

    Rendering channel.

    standardrealwild
  • promptstring必須

    Text prompt.

    3–10000 chars
  • aspect_ratiostring任意デフォルト 16:9

    Aspect ratio.

    1:121:94:33:416:99:16adaptive
  • durationstring任意デフォルト 5

    Clip duration.

    4–15 (seconds)
  • resolutionstring任意デフォルト 720p

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

    720p1080p1080p-plus4k
  • image_urlstring (URL)任意

    Start frame — required for image-to-video.

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

    Optional end frame.

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

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

    ≤ 12 public https image/video URLs
  • generate_audioboolean任意デフォルト true

    Generate an audio track.

    truefalse
  • fixed_lensboolean任意デフォルト false

    Lock the camera lens.

    truefalse
  • seedinteger任意

    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.

リクエスト

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"
  }'

レスポンス202

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

これらの例に表示されている credits_used の値は参考値です。実際の使用量は送信時に計算され、API から返されます。

2

タスクステータスの確認

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.

リクエスト

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

レスポンス200

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_"
    }
  ]
}

エラーコード

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)"
  }
}
コードHTTP意味
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.

Claude Code で使用

「Copy for AI」でAPI全体をクリーンなMarkdownとしてエクスポートし、Claude CodeやCodexに貼り付ければ、エージェントが統合をセットアップしてくれます。または、エージェントをrawテキストのエンドポイントに直接向けることもできます。

Skill

SeedanceスキルをClaude Code、Codex、または任意のエージェントにインストールすると、シネマティックなプロンプトを作成し、APIを通じてレンダリングしてくれます。

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

よくある質問

APIは誰が利用できますか?
クレジットをお持ちの方ならどなたでもご利用いただけます。プランによる制限はありません — クレジットのあるアカウントであれば、キーを作成してAPIを呼び出すことができます。
クレジットはどうやって入手できますか?
料金ページでチャージまたはプランに加入してください。クレジットは即座に残高に追加されます。
ウェブサイトとAPIでクレジットは共有されますか?
はい — 個人のクレジット残高が、Web生成とAPI呼び出しの両方で使用できます。チームでは、API呼び出しには各メンバーの個人残高が使われ、共有のチームプールは使用されません。
どうやって始めますか?
ダッシュボードでAPIキーを作成し、Bearerトークンを使用してエンドポイントを呼び出してください(詳しくは上記のQuickstartを参照)。
API呼び出しでinsufficient_creditsが返された場合はどうなりますか?
残高が不足しています。料金ページでチャージして、再度お試しください。