curl --request POST \
  --url 'https://api.kloo.li/v1/links' \
  --header 'Authorization: Bearer {api_key}' \
  --header 'Content-Type: multipart/form-data' \
  --form 'type=link' \
  --form 'is_bulk=1' \
  --form 'location_urls=https://example.com/a\nhttps://example.com/b'

const formData = new FormData();
formData.append('type', 'link');
formData.append('is_bulk', '1');
formData.append('location_urls', 'https://example.com/a\nhttps://example.com/b');

const response = await fetch('https://api.kloo.li/v1/links', {
  method: 'POST',
  headers: { Authorization: 'Bearer {api_key}' },
  body: formData
});
const data = await response.json();
console.log(data);

import requests

url = 'https://api.kloo.li/v1/links'
headers = {'Authorization': 'Bearer {api_key}'}
data = {
    'type': 'link',
    'is_bulk': '1',
    'location_urls': 'https://example.com/a\nhttps://example.com/b'
}
response = requests.request('POST', url, headers=headers, data=data)
print(response.json())

<?php
$ch = curl_init('https://api.kloo.li/v1/links');
curl_setopt_array($ch, [
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_CUSTOMREQUEST => 'POST',
  CURLOPT_HTTPHEADER => ['Authorization: Bearer {api_key}'],
  CURLOPT_POSTFIELDS => [
    'type' => 'link',
    'is_bulk' => '1',
    'location_urls' => 'https://example.com/a\nhttps://example.com/b'
  ],
]);
echo curl_exec($ch);
curl_close($ch);

package main

import (
  "bytes"
  "fmt"
  "io"
  "mime/multipart"
  "net/http"
)

func main() {
  var body bytes.Buffer
  writer := multipart.NewWriter(&body)
  _ = writer.WriteField("type", "link")
  _ = writer.WriteField("is_bulk", "1")
  _ = writer.WriteField("location_urls", "https://example.com/a\nhttps://example.com/b")
  _ = writer.Close()
  req, _ := http.NewRequest("POST", "https://api.kloo.li/v1/links", &body)
  req.Header.Set("Authorization", "Bearer {api_key}")
  req.Header.Set("Content-Type", writer.FormDataContentType())
  res, _ := http.DefaultClient.Do(req)
  defer res.Body.Close()
  data, _ := io.ReadAll(res.Body)
  fmt.Println(string(data))
}

HttpRequest request = HttpRequest.newBuilder()
  .uri(URI.create("https://api.kloo.li/v1/links"))
  .header("Authorization", "Bearer {api_key}")
  .header("Content-Type", "application/x-www-form-urlencoded")
  .method("POST", HttpRequest.BodyPublishers.ofString("type=link&is_bulk=1&location_urls=https://example.com/a\nhttps://example.com/b"))
  .build();
HttpResponse<String> response = HttpClient.newHttpClient()
  .send(request, HttpResponse.BodyHandlers.ofString());
System.out.println(response.body());

using var client = new HttpClient();
client.DefaultRequestHeaders.Add("Authorization", "Bearer {api_key}");
var content = new FormUrlEncodedContent(new Dictionary<string, string> { { "type", "link" }, { "is_bulk", "1" }, { "location_urls", "https://example.com/a\nhttps://example.com/b" } });
var request = new HttpRequestMessage(HttpMethod.Post, "https://api.kloo.li/v1/links") { Content = content };
var response = await client.SendAsync(request);
Console.WriteLine(await response.Content.ReadAsStringAsync());

require 'net/http'
require 'uri'

uri = URI('https://api.kloo.li/v1/links')
req = Net::HTTP::Post.new(uri)
req['Authorization'] = 'Bearer {api_key}'
req.set_form_data('type' => 'link', 'is_bulk' => '1', 'location_urls' => 'https://example.com/a\nhttps://example.com/b')
res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(req) }
puts res.body

{
  "data": {
    "id": 1
  }
}