> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crun.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Kling V3.0 Motion Control API
> Kling 3.0 motion control: transfer motion from a reference video to any character image with improved consistency and quality.
## Overview
Kling 3.0 motion control generates videos where character actions match a reference video while the visual appearance is
based on a reference image. Provide an image of a character and a video showing the motion you want, and the model
produces a new video combining the character’s look with the reference motion.
This V3.0 update brings improved element consistency and higher quality output compared to V2.6, with better
preservation of character identity and smoother motion transfer.
## Query Task Status
After submitting a task, use the unified query endpoint to check progress and retrieve results:
Learn how to query task status and retrieve generation results
For production use, we recommend using the `callback_url` parameter to receive automatic notifications when generation completes, rather than polling the status endpoint.
## Related Resources
Explore all available models
Check credits and account usage
## OpenAPI
````yaml models/kling/v3-motion-control.json post /api/v1/client/job/CreateTask
openapi: 3.0.0
info:
title: Crun Kling Motion Control API
description: crun.ai Kling API Documentation
version: 1.0.0
contact:
name: Technical Support
email: support@crun.ai
servers:
- url: https://api.crun.ai
description: API Server
security:
- ApiKeyAuth: []
paths:
/api/v1/client/job/CreateTask:
post:
summary: kling v3-motion-control video generation
operationId: kling/v3-motion-control
requestBody:
required: true
content:
application/json:
schema:
type: object
required:
- model
- input
properties:
model:
type: string
enum:
- kling/v3-motion-control
description: |-
The model name to use for generation. Required field.
- Must be `kling/v3-motion-control` for this endpoint
callback_url:
type: string
format: uri
description: >-
Optional. Callback URL for receiving task completion
notifications.
- System will POST task status and results to this URL when
generation completes
- Callback payloads structure is consistent with the `data`
object returned by the task status query
- Your callback endpoint should accept POST requests with
JSON payload containing results
- It returns an HTTP 200 status code upon successful receipt
example: https://your-domain.com/api/callback
input:
type: object
description: >-
Input parameters for Kling 3.0 motion control. This endpoint
is used for action imitation by combining one reference
image with one reference video.
properties:
img_urls:
type: array
description: Reference character image. Provide exactly 1 image URL.
items:
type: string
format: uri
minItems: 1
maxItems: 1
example:
- https://example.com/character-photo.jpg
video_urls:
type: array
description: >-
Reference motion video. Provide exactly 1 video URL. The
generated clip length follows the reference video
duration.
items:
type: string
format: uri
minItems: 1
maxItems: 1
example:
- https://example.com/dance-motion-reference.mp4
character_orientation:
type: string
description: >-
Character orientation source. `image` keeps the
reference image orientation. `video` follows the
reference video orientation.
enum:
- image
- video
default: image
example: video
prompt:
type: string
description: Optional prompt used to add extra visual instructions.
maxLength: 2500
example: >-
High detail, smooth camera motion, preserve the original
costume.
mode:
type: string
description: >-
Generation mode. `std` returns 720p output. `pro`
returns 1080p output.
enum:
- std
- pro
default: std
example: pro
keep_original_sound:
type: boolean
description: >-
Whether to preserve the original audio track from the
reference video when supported.
default: true
example: true
input_compliance:
type: string
description: Optional input compliance check setting.
enum:
- disabled
- enabled
example: enabled
output_compliance:
type: string
description: Optional output compliance check setting.
enum:
- disabled
- enabled
example: enabled
required:
- img_urls
- video_urls
example:
model: kling/v3-motion-control
callback_url: https://your-domain.com/api/callback
input:
img_urls:
- https://example.com/character_design.png
video_urls:
- https://example.com/action_reference.mp4
character_orientation: video
prompt: >-
The character mirrors the skateboard motion while keeping a
sharp cinematic look.
mode: pro
keep_original_sound: true
input_compliance: enabled
output_compliance: enabled
responses:
'200':
description: Request successful
content:
application/json:
schema:
allOf:
- $ref: '#/components/schemas/ApiResponse'
- type: object
properties:
data:
type: object
properties:
task_id:
type: string
description: >-
Task ID, can be used with Get Task Details
endpoint to query task status
example: task_12345678
example:
code: 200
message: success
data:
task_id: task_12345678
'422':
description: Validation Error
content:
application/json:
schema:
allOf:
- $ref: '#/components/schemas/ApiResponse'
- type: object
properties:
errors:
type: array
description: Detailed validation error messages
items:
type: string
example:
- specific error field message
example:
code: 422
message: Missing Params or Type Error
errors:
- specific error field message
'500':
$ref: '#/components/responses/Error'
components:
schemas:
ApiResponse:
type: object
properties:
code:
type: integer
enum:
- 200
- 401
- 402
- 404
- 422
- 429
- 455
- 500
- 501
- 505
description: >-
Response status code
- **200**: Success - Request has been processed successfully
- **401**: Unauthorized - Authentication credentials are missing or
invalid
- **402**: Insufficient Credits - Account does not have enough
credits to perform the operation
- **404**: Not Found - The requested resource or endpoint does not
exist
- **422**: Validation Error - The request parameters failed
validation checks
- **429**: Rate Limited - Request limit has been exceeded for this
resource
- **455**: Service Unavailable - System is currently undergoing
maintenance
- **500**: Server Error - An unexpected error occurred while
processing the request
- **501**: Generation Failed - Content generation task failed
- **505**: Feature Disabled - The requested feature is currently
disabled
message:
type: string
description: Response message, error description when failed
example: success
responses:
Error:
description: Server Error
securitySchemes:
ApiKeyAuth:
type: apiKey
in: header
name: x-api-key
description: >-
All APIs require authentication via API Key.
Get API Key:
1. Visit [API Key Management Page](https://crun.ai/user-api-key) to get
your API Key
Usage:
Add to request header:
x-api-key: YOUR_API_KEY
Note:
- Keep your API Key secure and do not share it with others
- If you suspect your API Key has been compromised, reset it immediately
in the management page
````