curl --request POST \
  --url https://api.hakumedia.ai/v2/ad-items/native/{ad_item_id}/companions/products \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "catalog": 10001,
  "product_identifier": "SKU-1001"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({catalog: 10001, product_identifier: 'SKU-1001'})
};

fetch('https://api.hakumedia.ai/v2/ad-items/native/{ad_item_id}/companions/products', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.hakumedia.ai/v2/ad-items/native/{ad_item_id}/companions/products"

payload = {
    "catalog": 10001,
    "product_identifier": "SKU-1001"
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.hakumedia.ai/v2/ad-items/native/{ad_item_id}/companions/products",
  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([
    'catalog' => 10001,
    'product_identifier' => 'SKU-1001'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

{
  "object": "ad_item_companion_product",
  "self": "/v2/ad-items/image/1234/companions/products/5678",
  "id": 1234,
  "catalog": 10001,
  "product_identifier": "SKU-1001"
}