curl -X POST 'https://api.elevenlabs.io/v1/productions/orders/order-id/media' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -F 'declared_language=string' \
  -F 'media=@sample.bin' \
  -F 'media_url=string' \
  -F 'media_url_filename=string' \
  -F 'media_url_content_type=string'

# POST /v1/productions/orders/{order_id}/media (ElevenLabs API)
Base URL: https://api.elevenlabs.io
Auth: xi-api-key: <ELEVENLABS_API_KEY>
Last verified: 2026-09-03

> Register Media

## 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/productions/orders/order-id/media' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -F 'declared_language=string'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| order_id | path | string | Yes | The ID of the order to which this med... |
| declared_language | body | string | Yes | The language code of the media conten... |
| media | body | string | No | The media file to upload. Mutually ex... |

## Response (200 OK)
{"media_id":"prodmedia_01jgb2zd68f8f9tfvbb968wb8z"}

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

POST

/v1/productions/orders/{order_id}/media

ElevenLabs API

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
→ 211 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/productions/orders/order-id/media' \  -H "xi-api-key: $ELEVENLABS_API_KEY" \  -F 'declared_language=string' \  -F 'media=@sample.bin' \  -F 'media_url=string' \  -F 'media_url_filename=string' \  -F 'media_url_content_type=string'

Get a free ElevenLabs API key → sponsored

Parameters

Name	In	Type	Required	Description
order_id	path	string	Yes	The ID of the order to which this media will be attached.
declared_language	body	string	Yes	The language code of the media content (e.g. 'en', 'es-ES'). Must be a supported source language for some order item kind.
media	body	string	No	The media file to upload. Mutually exclusive with media_url.
media_url	body	string	No	A URL to fetch the media file from. Mutually exclusive with media.
media_url_filename	body	string	No	The filename for URL-sourced media (e.g. 'example.mp4'). Required when using media_url.
media_url_content_type	body	string	No	The MIME type for URL-sourced media (e.g. 'video/mp4'). Required when using media_url.

Response 200 OK

{
  "media_id": "prodmedia_01jgb2zd68f8f9tfvbb968wb8z"
}