curl -X POST 'https://api.elevenlabs.io/v1/audio-native/content' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
  "url": "string",
  "author": "string",
  "title": "string"
}'

# POST /v1/audio-native/content (ElevenLabs API)
Base URL: https://api.elevenlabs.io
Auth: xi-api-key: <ELEVENLABS_API_KEY>
Last verified: 2026-09-03

> Update Audio-Native Content From Url

## 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 POST 'https://api.elevenlabs.io/v1/audio-native/content' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"url":"string","author":"string","title":"string"}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| url | body | string | Yes | URL of the page to extract content from. |
| author | body | string | No | Author used in the player and inserted at the start of th... |
| title | body | string | No | Title used in the player and inserted at the top of the u... |

## Response (200 OK)
{"converting":false,"html_snippet":"<div id='audio-native-player'></div>"}

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

POST

/v1/audio-native/content

ElevenLabs API

Update Audio-Native Content From Url

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
→ 234 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 POST 'https://api.elevenlabs.io/v1/audio-native/content' \  -H "xi-api-key: $ELEVENLABS_API_KEY" \  -H 'Content-Type: application/json' \  -d '{  "url": "string",  "author": "string",  "title": "string"}'

Get a free ElevenLabs API key → sponsored

Parameters

Name	In	Type	Required	Description
url	body	string	Yes	URL of the page to extract content from.
author	body	string	No	Author used in the player and inserted at the start of the uploaded article. If not provided, the default author set in the Player settings is used.
title	body	string	No	Title used in the player and inserted at the top of the uploaded article. If not provided, the default title set in the Player settings is used.

Response 200 OK

{
  "converting": false,
  "html_snippet": "<div id='audio-native-player'></div>",
  "project_id": "JBFqnCBsd6RMkjVDRZzb",
  "publishing": false
}