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POST
/
api
/
v1
/
wav
/
generate
Convert to WAV Format
curl --request POST \
  --url https://api.kie.ai/api/v1/wav/generate \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "taskId": "5c79****be8e",
  "audioId": "e231****-****-****-****-****8cadc7dc",
  "callBackUrl": "https://api.example.com/callback"
}'
{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "5c79****be8e"
  }
}

​
Usage Guide

  • Use this endpoint to obtain WAV format files from your generated music
  • WAV files provide uncompressed audio for professional editing and processing
  • Converted files maintain the full quality of the original audio

​
Parameter Details

  • taskId identifies the original music generation task
  • audioId specifies which audio track to convert when multiple variations exist

​
Developer Notes

  • Generated WAV files are retained for 14 days
  • WAV files are typically 5-10 times larger than MP3 equivalents
  • Processing time may vary depending on the length of the original audio

Authorizations

​
Authorization
string
header
required

All APIs require authentication via Bearer Token.

Get API Key:

  1. Visit API Key Management Page to get your API Key

Usage: Add to request header: Authorization: Bearer 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

Body

application/json
​
taskId
string
required

Unique identifier of the music generation task. This should be a taskId returned from either the "Generate Music" or "Extend Music" endpoints.

Example:

"5c79****be8e"

​
audioId
string
required

Unique identifier of the specific audio track to convert. This ID is returned in the callback data after music generation completes.

Example:

"e231****-****-****-****-****8cadc7dc"

​
callBackUrl
string<uri>
required

The URL to receive WAV conversion task completion updates. Required for all WAV conversion requests.

  • System will POST task status and results to this URL when WAV conversion completes
  • Callback includes the high-quality WAV file download URL
  • Your callback endpoint should accept POST requests with JSON payload containing the WAV file location
  • For detailed callback format and implementation guide, see WAV Conversion Callbacks
  • Alternatively, use the Get WAV Details endpoint to poll task status
Example:

"https://api.example.com/callback"

Response

Request successful

​
code
enum<integer>

Response status code

  • 200: Success - Request has been processed successfully
  • 400: Format Error - The parameter is not in a valid JSON format.
  • 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
  • 409: Conflict - WAV record already exists
  • 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 Build Failed - Audio wav generation failed
Available options:
200,
400,
401,
402,
404,
409,
422,
429,
455,
500
​
msg
string

Error message when code != 200

Example:

"success"

​
data
object