curl -X POST 'https://api.elevenlabs.io/v1/workspace/webhooks' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
  "settings": {
    "auth_type": "string",
    "name": "string",
    "webhook_url": "string",
    "request_headers": {}
  }
}'

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

> Create Workspace Webhook

## 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/workspace/webhooks' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"settings":{"auth_type":"string","name":"string","webhook_url":"string","request_headers":{}}}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| settings | body | object | Yes | Settings for creating an HMAC-authenticated webhook |

## Response (200 OK)
{"webhook_id":"string","webhook_secret":"string"}

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

POST

/v1/workspace/webhooks

ElevenLabs API

Create Workspace Webhook

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
→ 169 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/workspace/webhooks' \  -H "xi-api-key: $ELEVENLABS_API_KEY" \  -H 'Content-Type: application/json' \  -d '{  "settings": {    "auth_type": "string",    "name": "string",    "webhook_url": "string",    "request_headers": {}  }}'

Get a free ElevenLabs API key → sponsored

Parameters

Name	In	Type	Required	Description
settings	body	object	Yes	Settings for creating an HMAC-authenticated webhook

Response 200 OK

{
  "webhook_id": "string",
  "webhook_secret": "string"
}