curl -X PATCH 'https://api.elevenlabs.io/v1/dubbing/project/project-id/transcript/segments' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
  "segments": {}
}'

# PATCH /v1/dubbing/project/{project_id}/transcript/segments (ElevenLabs API)
Base URL: https://api.elevenlabs.io
Auth: xi-api-key: <ELEVENLABS_API_KEY>
Last verified: 2026-09-03

> Update Dubbing Transcript Segments

## Critical Gotchas
* Authentication uses the non-standard `xi-api-key` header, not `Authorization: Bearer`. Sending a Bearer token returns HTTP 401.
* Text-to-speech responses are raw binary audio, not JSON. Write the body to a file (`--output speech.mp3`) rather than parsing it.

## cURL
curl -X PATCH 'https://api.elevenlabs.io/v1/dubbing/project/project-id/transcript/segments' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"segments":{}}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| project_id | path | string | Yes | Identifier of the dubbing project. |
| segments | body | object | Yes | Map of segment ID to the partial update to apply to that... |

## Response (200 OK)
{"segments":[{}],"revision":0}

---
Need an API key? Get one at https://elevenlabs.io/app/sign-up

PATCH

/v1/dubbing/project/{project_id}/transcript/segments

ElevenLabs API

Update Dubbing Transcript Segments

Base URL: https://api.elevenlabs.io
Auth: xi-api-key: <ELEVENLABS_API_KEY>
Last verified: 2026-09-03 · upstream hash matched

Actions

Agents: curl -H "Accept: text/markdown" this URL
→ 198 tokens · Vary: Accept

Critical gotchas

Authentication uses the non-standard xi-api-key header, not Authorization: Bearer. Sending a Bearer token returns HTTP 401.

Text-to-speech responses are raw binary audio, not JSON. Write the body to a file (--output speech.mp3) rather than parsing it.

cURL

curl -X PATCH 'https://api.elevenlabs.io/v1/dubbing/project/project-id/transcript/segments' \  -H "xi-api-key: $ELEVENLABS_API_KEY" \  -H 'Content-Type: application/json' \  -d '{  "segments": {}}'

Get a free ElevenLabs API key → sponsored

Parameters

Name	In	Type	Required	Description
project_id	path	string	Yes	Identifier of the dubbing project.
segments	body	object	Yes	Map of segment ID to the partial update to apply to that segment. At least one entry and at most 500.

Response 200 OK

{
  "segments": [
    {
      "id": "string",
      "text": "string",
      "speaker_id": "string",
      "start_s": 0,
      "end_s": 0,
      "external_id": "string"
    }
  ],
  "revision": 0
}