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POST
/
wan2.2-kf2v-flash
/
async
curl --request POST \
  --url https://api.modellix.ai/api/v1/alibaba/wan2.2-kf2v-flash/async \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "first_frame_url": "https://example.com/first.jpg"
}
'
{
  "code": 0,
  "message": "success",
  "data": {
    "status": "pending",
    "task_id": "task-abc123",
    "model_id": "model-123",
    "get_result": {
      "method": "GET",
      "url": "https://api.modellix.ai/api/v1/tasks/task-abc123"
    }
  }
}

Documentation Index

Fetch the complete documentation index at: https://docs.modellix.ai/llms.txt

Use this file to discover all available pages before exploring further.

Authorizations

​
Authorization
string
header
required

API Key authentication. Format: Bearer YOUR_API_KEY.

Body

application/json
​
first_frame_url
string
required

First frame image URL (supports HTTP/HTTPS/Base64)

Example:

"https://example.com/first.jpg"

​
last_frame_url
string

Last frame image URL (supports HTTP/HTTPS/Base64), optional

Example:

"https://example.com/last.jpg"

​
prompt
string

Video content description, recommend describing the transition process between frames

Required string length: 1 - 800
Example:

"Smooth transition from first to last frame"

​
negative_prompt
string
Maximum string length: 500
​
resolution
enum<string>
default:720P

Video resolution tier

Available options:
480P,
720P,
1080P
Example:

"720P"

​
duration
enum<integer>
default:5

Video duration in seconds, fixed value

Available options:
5
Example:

5

​
prompt_extend
boolean
default:true

Enable prompt intelligent rewriting

Example:

true

​
seed
integer

Random seed for reproducibility

Required range: 0 <= x <= 2147483647
Example:

42

Response

200 - application/json

Task submitted successfully

​
code
integer
required

Response code, 0 indicates success

Example:

0

​
message
string
required

Response message

Example:

"success"

​
data
object
required