curl --request POST \
  --url https://{your-subdomain}.neetodesk.com/api/external/v2/customers \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <x-api-key>' \
  --data '
{
  "customer": {
    "emails": [
      "john@example.com",
      "jane@example.com"
    ],
    "first_name": "John",
    "last_name": "Doe",
    "phones": [
      "+1234567890"
    ],
    "links": [
      "https://github.com/john"
    ],
    "language": "English",
    "time_zone": "Eastern Time (US & Canada)",
    "description": "VIP customer",
    "company_id": "aaaabbbb-cccc-dddd-eeee-ffff00001111"
  }
}
'

import requests

url = "https://{your-subdomain}.neetodesk.com/api/external/v2/customers"

payload = { "customer": {
        "emails": ["john@example.com", "jane@example.com"],
        "first_name": "John",
        "last_name": "Doe",
        "phones": ["+1234567890"],
        "links": ["https://github.com/john"],
        "language": "English",
        "time_zone": "Eastern Time (US & Canada)",
        "description": "VIP customer",
        "company_id": "aaaabbbb-cccc-dddd-eeee-ffff00001111"
    } }
headers = {
    "X-Api-Key": "<x-api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-Api-Key': '<x-api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    customer: {
      emails: ['john@example.com', 'jane@example.com'],
      first_name: 'John',
      last_name: 'Doe',
      phones: ['+1234567890'],
      links: ['https://github.com/john'],
      language: 'English',
      time_zone: 'Eastern Time (US & Canada)',
      description: 'VIP customer',
      company_id: 'aaaabbbb-cccc-dddd-eeee-ffff00001111'
    }
  })
};

fetch('https://{your-subdomain}.neetodesk.com/api/external/v2/customers', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{your-subdomain}.neetodesk.com/api/external/v2/customers",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'customer' => [
        'emails' => [
                'john@example.com',
                'jane@example.com'
        ],
        'first_name' => 'John',
        'last_name' => 'Doe',
        'phones' => [
                '+1234567890'
        ],
        'links' => [
                'https://github.com/john'
        ],
        'language' => 'English',
        'time_zone' => 'Eastern Time (US & Canada)',
        'description' => 'VIP customer',
        'company_id' => 'aaaabbbb-cccc-dddd-eeee-ffff00001111'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-Api-Key: <x-api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://{your-subdomain}.neetodesk.com/api/external/v2/customers"

	payload := strings.NewReader("{\n  \"customer\": {\n    \"emails\": [\n      \"john@example.com\",\n      \"jane@example.com\"\n    ],\n    \"first_name\": \"John\",\n    \"last_name\": \"Doe\",\n    \"phones\": [\n      \"+1234567890\"\n    ],\n    \"links\": [\n      \"https://github.com/john\"\n    ],\n    \"language\": \"English\",\n    \"time_zone\": \"Eastern Time (US & Canada)\",\n    \"description\": \"VIP customer\",\n    \"company_id\": \"aaaabbbb-cccc-dddd-eeee-ffff00001111\"\n  }\n}")

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

	req.Header.Add("X-Api-Key", "<x-api-key>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://{your-subdomain}.neetodesk.com/api/external/v2/customers")
  .header("X-Api-Key", "<x-api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"customer\": {\n    \"emails\": [\n      \"john@example.com\",\n      \"jane@example.com\"\n    ],\n    \"first_name\": \"John\",\n    \"last_name\": \"Doe\",\n    \"phones\": [\n      \"+1234567890\"\n    ],\n    \"links\": [\n      \"https://github.com/john\"\n    ],\n    \"language\": \"English\",\n    \"time_zone\": \"Eastern Time (US & Canada)\",\n    \"description\": \"VIP customer\",\n    \"company_id\": \"aaaabbbb-cccc-dddd-eeee-ffff00001111\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{your-subdomain}.neetodesk.com/api/external/v2/customers")

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

request = Net::HTTP::Post.new(url)
request["X-Api-Key"] = '<x-api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"customer\": {\n    \"emails\": [\n      \"john@example.com\",\n      \"jane@example.com\"\n    ],\n    \"first_name\": \"John\",\n    \"last_name\": \"Doe\",\n    \"phones\": [\n      \"+1234567890\"\n    ],\n    \"links\": [\n      \"https://github.com/john\"\n    ],\n    \"language\": \"English\",\n    \"time_zone\": \"Eastern Time (US & Canada)\",\n    \"description\": \"VIP customer\",\n    \"company_id\": \"aaaabbbb-cccc-dddd-eeee-ffff00001111\"\n  }\n}"

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

{
  "customer": {
    "id": "aaaabbbb-cccc-dddd-eeee-ffff00002222",
    "name": "John Luther",
    "email": "john@example.com"
  }
}