curl --request POST \
  --url https://api.partner.cubee.cz/api/v1/invoice-extraction/validate \
  --header 'Content-Type: multipart/form-data' \
  --form file='@example-file'

using RestSharp;


var options = new RestClientOptions("https://api.partner.cubee.cz/api/v1/invoice-extraction/validate");
var client = new RestClient(options);
var request = new RestRequest("");
request.AlwaysMultipartFormData = true;
request.FormBoundary = "---011000010111000001101001";
request.AddFile("file", "example-file");
var response = await client.PostAsync(request);

Console.WriteLine("{0}", response.Content);

const form = new FormData();
form.append('file', '<string>');

const options = {method: 'POST'};

options.body = form;

fetch('https://api.partner.cubee.cz/api/v1/invoice-extraction/validate', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.partner.cubee.cz/api/v1/invoice-extraction/validate"

files = { "file": ("example-file", open("example-file", "rb")) }

response = requests.post(url, files=files)

print(response.text)