curl -X POST 'https://api.elevenlabs.io/v1/productions/orders/order-id/items' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
  "request": {
    "item": {
      "captions_sdh": false,
      "destination_languages": [
        "hi",
        "fr-FR",
        "de"
      ],
      "include_captions": true,
      "include_source_captions": false,
      "instructions": "Voices don'\''t need to match the originals, prioritize native-sounding voices",
      "kind": "dub",
      "media_id": "prodmedia_01jgatk6h0fwxrtbjade61yqhx",
      "source_language": "en"
    },
    "item_id": "string"
  }
}'

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

> Upsert Order Item

## 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/items' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"request":{"item":{},"item_id":"string"}}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| order_id | path | string | Yes | The ID of the order. |
| request | body | object | Yes | Request body field request. |

## Response (200 OK)
{"item_id":"proditem_01jgd3qhejfs7rm6swknz2ytjb","quote":{"amount_usd":11}}

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

POST

/v1/productions/orders/{order_id}/items

ElevenLabs API

Upsert Order Item

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
→ 186 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/items' \  -H "xi-api-key: $ELEVENLABS_API_KEY" \  -H 'Content-Type: application/json' \  -d '{  "request": {    "item": {      "captions_sdh": false,      "destination_languages": [        "hi",        "fr-FR",        "de"      ],      "include_captions": true,      "include_source_captions": false,      "instructions": "Voices don'\''t need to match the originals, prioritize native-sounding voices",      "kind": "dub",      "media_id": "prodmedia_01jgatk6h0fwxrtbjade61yqhx",      "source_language": "en"    },    "item_id": "string"  }}'

Get a free ElevenLabs API key → sponsored

Parameters

Name	In	Type	Required	Description
order_id	path	string	Yes	The ID of the order.
request	body	object	Yes	Request body field request.

Response 200 OK

{
  "item_id": "proditem_01jgd3qhejfs7rm6swknz2ytjb",
  "quote": {
    "amount_usd": 11
  }
}