curl -X GET 'https://api.elevenlabs.io/v1/studio/projects/project-id/chapters' \
  -H "xi-api-key: $ELEVENLABS_API_KEY"

# GET /v1/studio/projects/{project_id}/chapters (ElevenLabs API)
Base URL: https://api.elevenlabs.io
Auth: xi-api-key: <ELEVENLABS_API_KEY>
Last verified: 2026-09-03

> List Chapters

## 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 GET 'https://api.elevenlabs.io/v1/studio/projects/project-id/chapters' \
  -H "xi-api-key: $ELEVENLABS_API_KEY"

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| project_id | path | string | Yes | The ID of the Studio project. |

## Response (200 OK)
{"chapters":[{}]}

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

GET

/v1/studio/projects/{project_id}/chapters

ElevenLabs API

List Chapters

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
→ 159 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 GET 'https://api.elevenlabs.io/v1/studio/projects/project-id/chapters' \  -H "xi-api-key: $ELEVENLABS_API_KEY"

Get a free ElevenLabs API key → sponsored

Parameters

Name	In	Type	Required	Description
project_id	path	string	Yes	The ID of the Studio project.

Response 200 OK

{
  "chapters": [
    {
      "can_be_downloaded": true,
      "chapter_id": "aw1NgEzBg83R7vgmiJt6",
      "conversion_progress": 0.5,
      "last_conversion_date_unix": 1714204800,
      "last_conversion_error": "Error message",
      "name": "Chapter 1",
      "state": "converting",
      "statistics": {
        "characters_converted": 500,
        "characters_unconverted": 1000,
        "credits_needed_to_convert": 1000,
        "paragraphs_converted": 20,
        "paragraphs_unconverted": 10,
        "voice_statistics": [
          {
            "characters_converted": 300,
            "characters_unconverted": 600,
            "project_voice_ref_id": "voice123",
            "voice_id": "voice123"
          },
          {
            "characters_converted": 200,
            "characters_unconverted": 400,
            "project_voice_ref_id": "voice456",
            "voice_id": "voice456"
          }
        ]
      }
    }
  ]
}