HiAPI Seedance 2.0 Video

HiAPI Seedance 2.0 Video

Use this skill when the user wants video generation through HiAPI's seedance-2-0 model.

Requirements

• Node.js 18 or newer.
• HIAPI_API_KEY must be set in the environment.
• HIAPI_BASE_URL is optional and defaults to https://api.hiapi.ai.

Important links:

• Get API key: https://www.hiapi.ai/en/register
• Pricing: https://www.hiapi.ai/en/pricing
• Docs: https://docs.hiapi.ai

Never invent a video result. If the API call fails, report the status code, compact error message, and the next action from the Error Guidance section.

Generate A Video

Run:

node scripts/hiapi-seedance-2-video.mjs \
  --prompt "A cinematic ocean cliff shot at golden hour" \
  --seconds 5 \
  --resolution 720p \
  --ratio 16:9

For image-to-video, pass a public image URL or data URI:

node scripts/hiapi-seedance-2-video.mjs --prompt "The product photo comes alive with soft camera movement" --input-reference "https://example.com/product.jpg"

Supported durations:

• any integer from 4 to 15

Supported resolutions:

• 480p
• 720p
• 1080p

Supported ratios:

• 16:9
• 9:16
• 1:1
• 4:3
• 3:4
• 21:9
• adaptive

Media modes are mutually exclusive:

• Text-to-video: no media fields.
• First-frame image-to-video: use --first-frame-url or legacy alias --input-reference.
• First+last-frame image-to-video: use both --first-frame-url and --last-frame-url.
• Multimodal reference video generation: use --reference-image-url, --reference-video-url, and/or --reference-audio-url.

Do not mix first/last-frame fields with reference image/video/audio fields. Multimodal reference mode can ask in the prompt for a reference image to act as first or last frame, but strict first/last-frame identity should use first+last-frame mode.

Reference material limits:

• reference_image_urls plus first/last-frame images: at most 9 images total.
• reference_video_urls: at most 3 videos; each 2-15 seconds; total duration at most 15 seconds. The CLI requires one --reference-video-duration per video URL.
• reference_audio_urls: at most 3 audio clips; each 2-15 seconds; total duration at most 15 seconds. The CLI requires one --reference-audio-duration per audio URL.

The script creates a video task, polls until it finishes, downloads the video to outputs/ when possible, and prints JSON with the saved file path or remote URL.

API Contract

This skill calls:

POST /v1/tasks
GET /v1/tasks/{taskId}

with:

{
  "model": "seedance-2-0",
  "input": {
    "prompt": "...",
    "duration": 5,
    "resolution": "720p",
    "aspect_ratio": "16:9",
    "first_frame_url": "https://example.com/photo.jpg",
    "last_frame_url": "https://example.com/end.jpg",
    "reference_image_urls": ["asset://image-1"],
    "reference_video_urls": ["asset://video-1"],
    "reference_audio_urls": ["asset://audio-1"],
    "return_last_frame": false,
    "web_search": false,
    "nsfw_checker": false,
    "generate_audio": true,
    "seed": 12345
  }
}

first_frame_url is optional. The CLI still accepts --input-reference as a convenience alias, then sends it as input.first_frame_url. Do not include reference_*_urls in the same request as first/last-frame fields. generate_audio is omitted from the request unless explicitly set — the API default is true (audio on); pass --no-audio (or --no-generate-audio) to disable it, --generate-audio to force it on. seed is an optional integer from 0 to 2147483647 for reproducible generation; it is omitted unless --seed is passed.

For details, read references/api.md and references/output.md.

Check Configuration

Run:

node scripts/check-config.mjs

Use --live only when you want to verify that the configured key can reach the HiAPI pricing endpoint.

Error Guidance

• Missing HIAPI_API_KEY: tell the user to create or copy a key from https://www.hiapi.ai/en/register and export it.
• HTTP 401 or 403: tell the user to verify the HiAPI API key.
• HTTP 402, HTTP 403 with quota text, insufficient balance, credits, quota, or payment errors: tell the user to add credits or check billing at https://www.hiapi.ai/en/dashboard and review pricing at https://www.hiapi.ai/en/pricing.
• HTTP 400: tell the user to check duration, resolution, ratio, media mode, reference counts, and reference audio/video durations.
• HTTP 429: tell the user to wait and retry or reduce concurrent video generations.
• Task failure: ask the user to try a clearer prompt or a different image.
• Timeout: explain that video generation may still be running and the user can retry later.
• Optional skill update notice: tell the user the printed update command can be run later.
• Required skill update notice: tell the user the printed update command must be run before using this skill again.