Update Chapter

POST https://api.elevenlabs.io/v1/studio/projects//chapters/ Content-Type: application/json

Updates a chapter.

Reference: https://elevenlabs.io/docs/api-reference/studio/update-chapter

Servers

• https://api.elevenlabs.io (Production, default)
• https://api.us.elevenlabs.io (Production US)
• https://api.eu.residency.elevenlabs.io (Production EU)
• https://api.in.residency.elevenlabs.io (Production India)
• https://api.sg.residency.elevenlabs.io (Production Singapore)

• project_id (string, required) — The ID of the project to be used. You can use the List projects endpoint to list all the available projects.
• chapter_id (string, required) — The ID of the chapter to be used. You can use the List project chapters endpoint to list all the available chapters.

Body (application/json)

This endpoint expects a Body_Update_chapter_v1_studio_projects__project_id__chapters__chapter_id__post.

• name (string, optional, nullable) — The name of the chapter, used for identification only.
• content (ChapterContentInputModel, optional, nullable) — The chapter content to use.

200

Successful Response

• chapter (ChapterWithContentResponseModel, required)

Validation Error

• detail (list of ValidationError, optional)

Types

ChapterContentInputModel

• blocks (list of ChapterContentBlockInputModel, required)

ChapterWithContentResponseModel

• chapter_id (string, required) — The ID of the chapter.
• name (string, required) — The name of the chapter.
• can_be_downloaded (boolean, required) — Whether the chapter can be downloaded.
• state (enum, required) — The state of the chapter.
  • Allowed values: default, converting
• content (ChapterContentResponseModel, required)
• last_conversion_date_unix (integer, optional, nullable) — The last conversion date of the chapter.
• conversion_progress (double, optional, nullable) — The conversion progress of the chapter.
• has_video (boolean, optional, nullable) — Whether the chapter has a video.
• has_visual_content (boolean, optional, nullable) — Whether the chapter has any visual content (video, image, or text clips).
• voice_ids (list of string, optional, nullable) — List of voice ids used by the chapter
• statistics (ChapterStatisticsResponseModel, optional, nullable) — The statistics of the chapter.
• last_conversion_error (string, optional, nullable) — The last conversion error of the chapter.

ValidationError

• loc (list of ValidationErrorLocItems, required)
• msg (string, required)
• type (string, required)

ChapterContentBlockInputModel

• nodes (list of ChapterContentParagraphTtsNodeInputModel, required)
• sub_type (enum, optional, nullable)
  • Allowed values: p, h1, h2, h3
• block_id (string, optional, nullable)

ChapterContentResponseModel

• blocks (list of ChapterContentBlockResponseModel, required)

ChapterStatisticsResponseModel

• characters_unconverted (integer, required) — The number of unconverted characters.
• characters_converted (integer, required) — The number of converted characters.
• paragraphs_converted (integer, required) — The number of converted paragraphs.
• paragraphs_unconverted (integer, required) — The number of unconverted paragraphs.
• credits_needed_to_convert (integer, optional, nullable) — The number of credits needed to convert the remaining paragraphs.
• voice_statistics (list of VoiceStatisticsResponseModel, optional, nullable) — Per-voice breakdown of character counts.

ValidationErrorLocItems

ChapterContentParagraphTtsNodeInputModel

• type ("tts_node", required)
• text (string, required)
• voice_id (string, required)

ChapterContentBlockResponseModel

• block_id (string, required)
• nodes (list of ChapterContentBlockResponseModelNodesItems, required)

VoiceStatisticsResponseModel

• project_voice_ref_id (string, required) — The project voice reference ID.
• characters_unconverted (integer, required) — The number of unconverted characters for this voice.
• characters_converted (integer, required) — The number of converted characters for this voice.
• voice_id (string, required, deprecated) — The voice ID.
• credits_needed_to_convert (integer, optional, nullable) — The number of credits needed to convert the remaining audio for this voice.

ChapterContentBlockResponseModelNodesItems

ChapterContentBlockTtsNodeResponseModel

• type ("tts_node", required)
• project_voice_ref_id (string, required)
• text (string, required)
• voice_id (string, required, deprecated)

ChapterContentBlockExtendableNodeResponseModel

Not used. Make sure you anticipate new types in the future.

• type ("_other", required)

Examples

Request

{}

Response

{
  "chapter": {
    "chapter_id": "aw1NgEzBg83R7vgmiJt6",
    "name": "Chapter 1",
    "can_be_downloaded": true,
    "state": "default",
    "content": {
      "blocks": []
    },
    "last_conversion_date_unix": 1714204800,
    "conversion_progress": 0.5,
    "statistics": {
      "characters_unconverted": 100,
      "characters_converted": 200,
      "paragraphs_converted": 5,
      "paragraphs_unconverted": 3
    }
  }
}

SDK Code

import { ElevenLabsClient } from "@elevenlabs/elevenlabs-js";

async function main() {
    const client = new ElevenLabsClient();
    await client.studio.projects.chapters.update("21m00Tcm4TlvDq8ikWAM", "21m00Tcm4TlvDq8ikWAM", {});
}
main();

from elevenlabs import ElevenLabs

client = ElevenLabs()

client.studio.projects.chapters.update(
    project_id="21m00Tcm4TlvDq8ikWAM",
    chapter_id="21m00Tcm4TlvDq8ikWAM",
)

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.elevenlabs.io/v1/studio/projects/21m00Tcm4TlvDq8ikWAM/chapters/21m00Tcm4TlvDq8ikWAM"

	payload := strings.NewReader("{}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://api.elevenlabs.io/v1/studio/projects/21m00Tcm4TlvDq8ikWAM/chapters/21m00Tcm4TlvDq8ikWAM")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{}"

response = http.request(request)
puts response.read_body

import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.elevenlabs.io/v1/studio/projects/21m00Tcm4TlvDq8ikWAM/chapters/21m00Tcm4TlvDq8ikWAM")
  .header("Content-Type", "application/json")
  .body("{}")
  .asString();

<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.elevenlabs.io/v1/studio/projects/21m00Tcm4TlvDq8ikWAM/chapters/21m00Tcm4TlvDq8ikWAM', [
  'body' => '{}',
  'headers' => [
    'Content-Type' => 'application/json',
  ],
]);

echo $response->getBody();

using RestSharp;

var client = new RestClient("https://api.elevenlabs.io/v1/studio/projects/21m00Tcm4TlvDq8ikWAM/chapters/21m00Tcm4TlvDq8ikWAM");
var request = new RestRequest(Method.POST);
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);

import Foundation

let headers = ["Content-Type": "application/json"]
let parameters = [] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://api.elevenlabs.io/v1/studio/projects/21m00Tcm4TlvDq8ikWAM/chapters/21m00Tcm4TlvDq8ikWAM")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()