---
title: "Update Story Item Volume"
method: PUT
path: "/stories/{story_id}/items/{item_id}/volume"
---

# Update Story Item Volume

`PUT /stories/{story_id}/items/{item_id}/volume`

## Request

- Base URL: `https://api.voicelabs.now` (the document declares no server; this is the origin it was published from)
- URL: `https://api.voicelabs.now/stories/{story_id}/items/{item_id}/volume`
- Auth: none declared

Set a story item's per-clip volume (linear gain, 0.0–2.0).

## Path parameters

- `story_id` string, required
- `item_id` string, required

## Request body

- StoryItemVolumeUpdate: Request model for adjusting a story item's playback volume. Linear gain. ``1.0`` is the original level, ``0.0`` is silent. Capped above 1.0 so a too-aggressive boost can't blow out the mix or clip the export.
  - `volume` number, required

## Response `200`

Successful Response

- StoryItemDetail: Detail model for story item with generation info.
  - `id` string, required
  - `story_id` string, required
  - `generation_id` string, required
  - `version_id` string, nullable
  - `start_time_ms` integer, required
  - `track` integer
  - `trim_start_ms` integer
  - `trim_end_ms` integer
  - `created_at` string, date-time, required
  - `profile_id` string, required
  - `profile_name` string, required
  - `text` string, required
  - `language` string, required
  - `audio_path` string, required
  - `duration` number, required
  - `seed` integer, nullable, required
  - `instruct` string, nullable, required
  - `engine` string, nullable
  - `volume` number
  - `generation_created_at` string, date-time, required
  - `versions` GenerationVersionResponse[], nullable
    - `id` string, required
    - `generation_id` string, required
    - `label` string, required
    - `audio_path` string, required
    - `effects_chain` EffectConfig[], nullable
      - `type` string, required
      - `enabled` boolean
      - `params` object
    - `source_version_id` string, nullable
    - `is_default` boolean, required
    - `created_at` string, date-time, required
  - `active_version_id` string, nullable

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/voicelabs/apis/voicebox-api.md) · [All operations](https://skmtc.dev/voicelabs/apis/voicebox-api/llms.txt) · [OpenAPI document](https://skmtc.dev/voicelabs/apis/voicebox-api/revisions/a7a37d1fc02f?raw)