curl -X POST 'https://api.elevenlabs.io/v1/studio/projects/project-id/snapshots/project-snapshot-id/stream' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
  "convert_to_mpeg": false
}'

# POST /v1/studio/projects/{project_id}/snapshots/{project_snapshot_id}/stream (ElevenLabs API)
Base URL: https://api.elevenlabs.io
Auth: xi-api-key: <ELEVENLABS_API_KEY>
Last verified: 2026-09-03

> Stream Studio Project Audio

## 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/studio/projects/project-id/snapshots/project-snapshot-id/stream' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"convert_to_mpeg":false}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| project_id | path | string | Yes | The ID of the Studio project. |
| project_snapshot_id | path | string | Yes | The ID of the Studio project snapshot. |
| convert_to_mpeg | body | boolean | No | Whether to convert the audio to mpeg format. |

## Response (200 OK)
null

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

POST

/v1/studio/projects/{project_id}/snapshots/{project_snapshot_id}/stream

ElevenLabs API

Stream Studio Project Audio

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
→ 216 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/studio/projects/project-id/snapshots/project-snapshot-id/stream' \  -H "xi-api-key: $ELEVENLABS_API_KEY" \  -H 'Content-Type: application/json' \  -d '{  "convert_to_mpeg": false}'

Get a free ElevenLabs API key → sponsored

Parameters

Name	In	Type	Required	Description
project_id	path	string	Yes	The ID of the Studio project.
project_snapshot_id	path	string	Yes	The ID of the Studio project snapshot.
convert_to_mpeg	body	boolean	No	Whether to convert the audio to mpeg format.

Response 200 OK

null