curl --request PUT \
  --url https://www.atom.com/api/registrar/v1/domains/{domain_name}/contacts \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "registrant": "ATOM-12345",
  "admin": "CONTACT_1-67890",
  "billing": "CONTACT_2-67890",
  "tech": "CONTACT_3-67890"
}
'

import requests

url = "https://www.atom.com/api/registrar/v1/domains/{domain_name}/contacts"

payload = {
    "registrant": "ATOM-12345",
    "admin": "CONTACT_1-67890",
    "billing": "CONTACT_2-67890",
    "tech": "CONTACT_3-67890"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    registrant: 'ATOM-12345',
    admin: 'CONTACT_1-67890',
    billing: 'CONTACT_2-67890',
    tech: 'CONTACT_3-67890'
  })
};

fetch('https://www.atom.com/api/registrar/v1/domains/{domain_name}/contacts', 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://www.atom.com/api/registrar/v1/domains/{domain_name}/contacts",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'registrant' => 'ATOM-12345',
    'admin' => 'CONTACT_1-67890',
    'billing' => 'CONTACT_2-67890',
    'tech' => 'CONTACT_3-67890'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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://www.atom.com/api/registrar/v1/domains/{domain_name}/contacts"

	payload := strings.NewReader("{\n  \"registrant\": \"ATOM-12345\",\n  \"admin\": \"CONTACT_1-67890\",\n  \"billing\": \"CONTACT_2-67890\",\n  \"tech\": \"CONTACT_3-67890\"\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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.put("https://www.atom.com/api/registrar/v1/domains/{domain_name}/contacts")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"registrant\": \"ATOM-12345\",\n  \"admin\": \"CONTACT_1-67890\",\n  \"billing\": \"CONTACT_2-67890\",\n  \"tech\": \"CONTACT_3-67890\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://www.atom.com/api/registrar/v1/domains/{domain_name}/contacts")

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

request = Net::HTTP::Put.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"registrant\": \"ATOM-12345\",\n  \"admin\": \"CONTACT_1-67890\",\n  \"billing\": \"CONTACT_2-67890\",\n  \"tech\": \"CONTACT_3-67890\"\n}"

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

{
  "success": true,
  "message": "Domain contacts updated successfully",
  "data": {
    "domain_name": "example.com",
    "registrant_handle": "ATOM-12345",
    "admin_handle": "CONTACT_1-67890",
    "billing_handle": "CONTACT_2-67890",
    "tech_handle": "CONTACT_3-67890"
  }
}

{
  "success": true,
  "message": "Domain contact update initiated. Please verify the update via the email sent to your registered email address.",
  "verification_required": true,
  "data": {
    "domain_name": "example.com"
  }
}

{
  "success": false,
  "error": "Bad Request",
  "message": "Invalid input provided"
}

{
  "success": false,
  "error": "Unauthorized",
  "message": "Invalid registrar API token or access has been revoked. Please request registrar API access from your dashboard."
}

{
  "success": false,
  "error": "Bad Request",
  "message": "Invalid input provided"
}

{
  "success": false,
  "error": "Bad Request",
  "message": "Invalid input provided"
}

{
  "success": false,
  "error": "Bad Request",
  "message": "Invalid input provided"
}