> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ttapi.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Suno Fade Out API Documentation

> Use the Suno fade-out API to add a gradual audio fade-out effect to an existing Suno track.

Use this endpoint to apply a fade-out effect to an existing Suno track. Submit `music_id`, `fade_time_s`, and `title`; store the returned `jobId` and retrieve the edited result through [Suno Fetch V2](/api/en/suno/suno_fetch_v2) or your `hookUrl` callback.


## OpenAPI

````yaml openapi/en/suno.json POST /suno/v1/fade-out
openapi: 3.1.0
info:
  title: TTAPI API DOCS
  version: 1.0.0
  description: Suno AI Music API
servers:
  - url: https://api.ttapi.io
security: []
paths:
  /suno/v1/fade-out:
    post:
      requestBody:
        required: true
        content:
          application/json:
            schema:
              allOf:
                - type: object
                  properties:
                    music_id:
                      type: string
                      description: Source music ID to edit.
                    fade_time_s:
                      type: number
                      description: Fade duration, in seconds.
                    title:
                      type: string
                      description: >-
                        Base title for the edited track. The resulting title is
                        submitted with a Fade Out suffix.
                  required:
                    - music_id
                    - fade_time_s
                    - title
                - $ref: '#/components/schemas/IsStorageParams'
                - $ref: '#/components/schemas/HookUrlParams'
      responses:
        '200':
          description: Request successful
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    example: SUCCESS
                  message:
                    type: string
                    example: success
                  data:
                    type: object
                    properties:
                      jobId:
                        type: string
                        description: Task ID for querying the edit result.
                    required:
                      - jobId
                    example:
                      jobId: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
                required:
                  - status
                  - message
                  - data
        '400':
          $ref: '#/components/responses/400Response'
        '401':
          $ref: '#/components/responses/401Response'
      security:
        - CustomApiKey: []
components:
  schemas:
    IsStorageParams:
      type: object
      properties:
        isStorage:
          type: boolean
          default: true
          description: >-
            Whether to store the generated audio.


            - **true**: The audio will be stored and a TTAPI CDN URL will be
            returned

            - **false**: The original source URL will be returned
    HookUrlParams:
      type: object
      properties:
        hookUrl:
          type: string
          description: Callback notification URL
  responses:
    400Response:
      description: Parameter error
      content:
        application/json:
          schema:
            type: object
            properties:
              status:
                type: string
                example: FAILED
              message:
                type: string
              data:
                type: object
            required:
              - status
              - message
    401Response:
      description: Authorization failed
      content:
        application/json:
          schema:
            type: object
            properties:
              status:
                type: string
                example: FAILED
              message:
                type: string
                example: Wrong TT-API-KEY or email is not activated.
            required:
              - status
              - message
  securitySchemes:
    CustomApiKey:
      type: apiKey
      in: header
      name: TT-API-KEY
      description: >-
        You can obtain your API key from the <a
        href='https://dashboard.ttapi.io' target='_blank'>TTAPI Dashboard</a>.

````