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POST
/
suno
/
v2
/
audio
/
fade
fade in / fade out
curl --request POST \
  --url https://api.mountsea.ai/suno/v2/audio/fade \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "clip_id": "<string>",
  "fade_in_time": 1,
  "fade_out_time": 1,
  "title": "<string>"
}
'
{
  "taskId": "15c257ff-43f7-4678-bd41-202ad6b8488b"
}
Apply fade-in and/or fade-out to an existing clip. Poll Get Task Status until success.
Free (0 credits). Provide at least one of fade_in_time or fade_out_time.

​
Parameters

FieldTypeRequiredDescription
clip_idstringYesClip to process
fade_in_timenumberOne of twoFade-in end time (seconds)
fade_out_timenumberOne of twoFade-out start time (seconds)
titlestringNoTitle for the resulting clip

​
Result

Same shape as Crop Audio: action_clip_id plus full clip object.

​
Example

curl -X POST https://api.mountsea.ai/suno/v2/audio/fade \
  -H "Authorization: Bearer your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "clip_id": "5a3c023f-d1ed-4a85-b61e-168dde2b6659",
    "fade_in_time": 3,
    "fade_out_time": 28,
    "title": "Summer Vibes (Fade)"
  }'

Authorizations

​
Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json
​
clip_id
string
required

要操作的 clip_id（须与账号一致）

​
fade_in_time
number

淡入结束时间（秒），与 fade_out_time 二选一

Required range: x >= 0
​
fade_out_time
number

淡出开始时间（秒），与 fade_in_time 二选一

Required range: x >= 0
​
title
string

操作后的标题

Response

201 - application/json
​
taskId
string
required

task id. Use this id to query task status.

Example:

"15c257ff-43f7-4678-bd41-202ad6b8488b"