curl -X GET 'https://api.elevenlabs.io/v1/voices/pvc/voice-id/samples/sample-id/waveform' \
  -H "xi-api-key: $ELEVENLABS_API_KEY"

# GET /v1/voices/pvc/{voice_id}/samples/{sample_id}/waveform (ElevenLabs API)
Base URL: https://api.elevenlabs.io
Auth: xi-api-key: <ELEVENLABS_API_KEY>
Last verified: 2026-09-03

> Retrieve Voice Sample Visual Waveform

## 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 GET 'https://api.elevenlabs.io/v1/voices/pvc/voice-id/samples/sample-id/waveform' \
  -H "xi-api-key: $ELEVENLABS_API_KEY"

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| voice_id | path | string | Yes | Voice ID to be used, you can use https://api.elevenlabs.i... |
| sample_id | path | string | Yes | Sample ID to be used |

## Response (200 OK)
{"sample_id":"DCwhRBWXzGAHq8TQ4Fs18","visual_waveform":[0.1,0.2,0.3,0.4,0.5]}

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

GET

/v1/voices/pvc/{voice_id}/samples/{sample_id}/waveform

ElevenLabs API

Retrieve Voice Sample Visual Waveform

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 GET 'https://api.elevenlabs.io/v1/voices/pvc/voice-id/samples/sample-id/waveform' \  -H "xi-api-key: $ELEVENLABS_API_KEY"

Get a free ElevenLabs API key → sponsored

Parameters

Name	In	Type	Required	Description
voice_id	path	string	Yes	Voice ID to be used, you can use https://api.elevenlabs.io/v1/voices to list all the available voices.
sample_id	path	string	Yes	Sample ID to be used

Response 200 OK

{
  "sample_id": "DCwhRBWXzGAHq8TQ4Fs18",
  "visual_waveform": [
    0.1,
    0.2,
    0.3,
    0.4,
    0.5
  ]
}