curl --request POST \
  --url https://www.ninjachat.ai/api/v1/video \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "prompt": "A golden retriever running in a sunny park"
}
'

{
  "request_id": "<string>",
  "message": "Poll GET /api/v1/video/status?request_id=... for completion.",
  "cost": {
    "this_request": "$3.00",
    "per_video": "$3.00"
  },
  "balance": "$39.00",
  "metadata": {
    "latency_ms": 123
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "param": "<string>"
  },
  "message": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "param": "<string>"
  },
  "message": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "param": "<string>"
  },
  "message": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "param": "<string>"
  },
  "message": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "param": "<string>"
  },
  "message": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

Media

Video Generation

Start a video generation job. Supports 6 models. $5.00/video:** `veo-3.1` (Google best quality). **$ 3.00/video: seedance-2 (default, uncensored, 5–15s), kling-video (motion quality, 5–10s), google-veo-2 (fast cinematic, 5/6/8s), veo-3.1-fast (speed-optimized, 4/6/8s), google-veo-3-fast (budget Veo, 4/6/8s). Poll the status endpoint with the returned request_id to retrieve the result.

POST

api

video

curl --request POST \
  --url https://www.ninjachat.ai/api/v1/video \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "prompt": "A golden retriever running in a sunny park"
}
'

{
  "request_id": "<string>",
  "message": "Poll GET /api/v1/video/status?request_id=... for completion.",
  "cost": {
    "this_request": "$3.00",
    "per_video": "$3.00"
  },
  "balance": "$39.00",
  "metadata": {
    "latency_ms": 123
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "param": "<string>"
  },
  "message": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "param": "<string>"
  },
  "message": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "param": "<string>"
  },
  "message": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "param": "<string>"
  },
  "message": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "param": "<string>"
  },
  "message": "<string>",
  "code": "<string>",
  "request_id": "<string>"
}

Authorizations

Authorization

string

header

required

API key starting with nj_sk_

Body

application/json

prompt

string

required

Text description of the video to generate. Cannot be empty or whitespace-only.

Required string length: 1 - 4000

model

enum<string>

default:seedance-2

Video model to use. $5.00/video: veo-3.1 (Google best quality). $3.00/video: seedance-2 (longest clips, 5–15s), kling-video (motion quality, 5–10s), google-veo-2 (fastest, ~40s), veo-3.1-fast (speed-optimized, 4/6/8s), google-veo-3-fast (budget Veo, 4/6/8s).

Available options:

seedance-2,

kling-video,

google-veo-2,

veo-3.1,

veo-3.1-fast,

google-veo-3-fast

duration

integer

default:8

Video length in seconds. Seedance 2: 5–15. Kling: 5–10. Veo 2: 5–8. Veo 3.1 / Veo 3.1 Fast: 4, 6, or 8.

Required range: 4 <= x <= 15

aspect_ratio

enum<string>

default:16:9

Aspect ratio. 16:9 for landscape, 9:16 for portrait. Supported by Veo and Kling models. Ignored for Seedance 2.

Available options:

16:9,

9:16

image_url

string<uri>

Public URL of a reference image for image-to-video generation. Must be an HTTP or HTTPS URL. Omit for text-to-video.

Response

Video generation job accepted.

request_id

string

Unique job identifier. Use this to poll the status endpoint.

model

enum<string>

The model used for this generation.

Available options:

seedance-2,

kling-video,

google-veo-2,

veo-3.1,

veo-3.1-fast,

google-veo-3-fast

message

string

Example:

"Poll GET /api/v1/video/status?request_id=... for completion."

cost

object

Show child attributes

balance

string

Remaining credit balance after this charge.

Example:

"$39.00"

metadata

object

Show child attributes

Chat

Power Features

Sessions

Media

Key Management

Billing & Usage

Video Generation

Authorizations

Body

Response