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POST
cURL

Authorizations

TT-API-KEY
string
header
required

Please visit TTAPI Dashboard to obtain your API key.

Body

application/json
clip_id
string
required

Source music clip_id

extend_from_s
number
required

From which time point to extend the source clip, in seconds; cannot exceed source clip duration.

extend_s
number
required

Extension duration in seconds; maximum 164 seconds.

Required range: x <= 164
instruction
string
required

Edit instruction for extending music.

model
string
default:Lyria 3 Pro

Music model name, defaults to Lyria 3 Pro when empty

title
string

Title after extension.

seed
string

Random seed; used to reproduce or control generation results.

hook_url
string

Business callback URL after task completion; no callback push when empty

Response

Request successful

status
string
required
Example:

"SUCCESS"

message
string
required
Example:

"success"

data
object
required
Example:
Last modified on April 25, 2026