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。
このページについて
クイックスタート
- 1
- 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 $SEEDANCE_API_KEY" \ -H "Content-Type: application/json" \ -H "Idempotency-Key: demo-video-001" \ -d '{ "mode": "text-to-video", "quality_tier": "standard", "prompt": "A cinematic shot of a glass train crossing a snowy mountain bridge", "aspect_ratio": "16:9", "duration": "5", "resolution": "720p" }' - 3
結果のポーリング
タスクステータスエンドポイントをポーリングし、ステータスが完了または失敗になるまで待ちます。その後、出力を読み取ってください。
while true; do TASK=$(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.
Authorization: Bearer sk_live_your_api_key
Content-Type: application/json
Idempotency-Key: a-unique-id-per-requestSeedance 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_…
ジョブを送信
/api/v1/video/seedance2パラメータ
modestring任意デフォルトtext-to-videoGeneration mode.
text-to-videoimage-to-videomedia-to-videoquality_tierstring任意デフォルトstandardQuality tier.
ministandardprochannelstring任意デフォルトstandardRendering channel.
standardrealwildpromptstring必須Text prompt.
3–10000 charsaspect_ratiostring任意デフォルト16:9Aspect ratio.
1:121:94:33:416:99:16adaptivedurationstring任意デフォルト5Clip duration.
4–15 (seconds)resolutionstring任意デフォルト720pOutput resolution. 1080p-plus and 4k are available on pro only.
720p1080p1080p-plus4kimage_urlstring (URL)任意Start frame — required for image-to-video.
public https URL, ≤ 30 MBend_image_urlstring (URL)任意Optional end frame.
public https URL, ≤ 30 MBmedia_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 URLsgenerate_audioboolean任意デフォルトtrueGenerate an audio track.
truefalsefixed_lensboolean任意デフォルトfalseLock the camera lens.
truefalseseedinteger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
{
"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。
タスクステータスの確認
/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 $SEEDANCE_API_KEY"レスポンス200
{
"id": "sd2_xxxxx",
"type": "video",
"status": "completed",
"model": "seedance2",
"quality_tier": "standard",
"channel": "standard",
"resolution": "720p",
"credits_used": 30,
"credits_refunded": 0,
"output": {
"video_url": "https://...",
"last_frame_url": "https://...",
"seed": 123
},
"result_urls": ["https://..."],
"error": null,
"created_at": "2026-06-03T10:00:00.000Z",
"updated_at": "2026-06-03T10:03:12.000Z"
}Wait for the result
while true; do
TASK=$(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
doneTasks 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
/api/v1/tasksReturns 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"{
"data": [
{
"id": "sd2_xxxxx",
"type": "video",
"status": "completed",
"model": "seedance2",
"credits_used": 30,
"result_urls": ["https://..."]
}
],
"has_more": false,
"next_cursor": null
}Check balance
/api/v1/balanceReturns 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"{
"credits": 1200,
"subscription_credits": 1000,
"subscription_credits_expire_at": "2026-07-01T00:00:00.000Z"
}List models
/api/v1/modelsReturns 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"{
"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.
{
"error": {
"code": "invalid_request",
"message": "Invalid request body: prompt: String must contain at least 3 character(s)"
}
}| コード | HTTP | 意味 |
|---|---|---|
unauthorized | 401 | Missing, invalid, or revoked API key. |
invalid_request | 400 | Bad input or unsupported field. The message names the first field that failed; details lists them all. |
purchase_required | 403 | Seedance 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_credits | 402 | Not 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_limited | 429 | Too 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_conflict | 409 | Same Idempotency-Key reused with a different body, or still running. |
service_busy | 503 | Temporary upstream or credit-concurrency issue. Retry. |
not_found | 404 | Task does not exist or does not belong to this key owner. |
internal_error | 500 | Unexpected 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。
# 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。