Upload Asset

POST https://api.elevenlabs.io/v1/assets Content-Type: multipart/form-data

Upload a new asset.

Reference: https://elevenlabs.io/docs/api-reference/assets/create

Servers

https://api.elevenlabs.io (Production, default)
https://api.us.elevenlabs.io (Production US)
https://api.eu.residency.elevenlabs.io (Production EU)
https://api.in.residency.elevenlabs.io (Production India)
https://api.sg.residency.elevenlabs.io (Production Singapore)

Request

Body (multipart/form-data)

This endpoint expects a multipart form containing a file.

asset (file, required) — The file to upload.
name (string, required) — Display name for the asset.

Response

200

Successful Response

asset_id (string, required) — Unique identifier for the asset.
name (string, required) — Display name of the asset.
mime_type (string, required) — MIME type of the uploaded file (e.g. audio/mpeg).
created_at_unix (integer, required) — Unix timestamp (seconds) the asset was created.
content_url (string, required, nullable) — Signed URL to fetch the asset's content. May be null if the asset has not finished processing. Do not rely on it being valid for more than 1 hour; fetch the asset again for a fresh URL.

Errors

422 Unprocessable Entity Error

Validation Error

detail (list of ValidationError, optional)

Types

ValidationError

loc (list of ValidationErrorLocItems, required)
msg (string, required)
type (string, required)

ValidationErrorLocItems

Examples

Request

JSON

{
  "asset": "<file: string>",
  "name": "podcast-intro.mp3"
}

Response

JSON

{
  "asset_id": "5xM2KqOnZyce22SPZ9d4",
  "name": "podcast-intro.mp3",
  "mime_type": "audio/mpeg",
  "created_at_unix": 1721520000,
  "content_url": "https://.../a1b2c3d4/content?..."
}

SDK Code

TypeScript

import { ElevenLabsClient } from "@elevenlabs/elevenlabs-js";

async function main() {
    const client = new ElevenLabsClient();
    await client.assets.create({});
}
main();

Python

from elevenlabs import ElevenLabs

client = ElevenLabs()

client.assets.create(
    asset="example_asset",
)

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.elevenlabs.io/v1/assets"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"asset\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"name\"\r\n\r\npodcast-intro.mp3\r\n-----011000010111000001101001--\r\n")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "multipart/form-data; boundary=---011000010111000001101001")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}

Ruby

require 'uri'
require 'net/http'

url = URI("https://api.elevenlabs.io/v1/assets")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'multipart/form-data; boundary=---011000010111000001101001'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"asset\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"name\"\r\n\r\npodcast-intro.mp3\r\n-----011000010111000001101001--\r\n"

response = http.request(request)
puts response.read_body

Java

import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.elevenlabs.io/v1/assets")
  .header("Content-Type", "multipart/form-data; boundary=---011000010111000001101001")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"asset\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"name\"\r\n\r\npodcast-intro.mp3\r\n-----011000010111000001101001--\r\n")
  .asString();

PHP

<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.elevenlabs.io/v1/assets', [
  'multipart' => [
    [
        'name' => 'asset',
        'filename' => 'string',
        'contents' => null
    ],
    [
        'name' => 'name',
        'contents' => 'podcast-intro.mp3'
    ]
  ]
]);

echo $response->getBody();

using RestSharp;

var client = new RestClient("https://api.elevenlabs.io/v1/assets");
var request = new RestRequest(Method.POST);
request.AddParameter("multipart/form-data; boundary=---011000010111000001101001", "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"asset\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"name\"\r\n\r\npodcast-intro.mp3\r\n-----011000010111000001101001--\r\n", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);

Swift

import Foundation

let headers = ["Content-Type": "multipart/form-data; boundary=---011000010111000001101001"]
let parameters = [
  [
    "name": "asset",
    "fileName": "string"
  ],
  [
    "name": "name",
    "value": "podcast-intro.mp3"
  ]
]

let boundary = "---011000010111000001101001"

var body = ""
var error: NSError? = nil
for param in parameters {
  let paramName = param["name"]!
  body += "--\(boundary)\r\n"
  body += "Content-Disposition:form-data; name=\"\(paramName)\""
  if let filename = param["fileName"] {
    let contentType = param["content-type"]!
    let fileContent = String(contentsOfFile: filename, encoding: String.Encoding.utf8)
    if (error != nil) {
      print(error as Any)
    }
    body += "; filename=\"\(filename)\"\r\n"
    body += "Content-Type: \(contentType)\r\n\r\n"
    body += fileContent
  } else if let paramValue = param["value"] {
    body += "\r\n\r\n\(paramValue)"
  }
}

let request = NSMutableURLRequest(url: NSURL(string: "https://api.elevenlabs.io/v1/assets")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()