curl --request POST \
  --url https://api.hakumedia.ai/v2/publishers/{publisher_id}/product-db/catalogs/{catalog_id}/items \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data @- <<EOF
{
  "item_data": {
    "sku": "777111222333",
    "title": "John's Rainbow Light Up Shoes",
    "brand": "John's Shoes",
    "description": "This coolest shoes you'll ever wear!",
    "price": "99.99",
    "subtype_name": "clothing",
    "type_name": "APPAREL",
    "rating": "4",
    "upc": "1456484",
    "availability_status": "IN STOCK",
    "vendor_name": "John's Shoe Awesome Vendor",
    "seller_id": "8675309",
    "vendor_id": "2506678509"
  }
}
EOF

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    item_data: {
      sku: '777111222333',
      title: 'John\'s Rainbow Light Up Shoes',
      brand: 'John\'s Shoes',
      description: 'This coolest shoes you\'ll ever wear!',
      price: '99.99',
      subtype_name: 'clothing',
      type_name: 'APPAREL',
      rating: '4',
      upc: '1456484',
      availability_status: 'IN STOCK',
      vendor_name: 'John\'s Shoe Awesome Vendor',
      seller_id: '8675309',
      vendor_id: '2506678509'
    }
  })
};

fetch('https://api.hakumedia.ai/v2/publishers/{publisher_id}/product-db/catalogs/{catalog_id}/items', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.hakumedia.ai/v2/publishers/{publisher_id}/product-db/catalogs/{catalog_id}/items"

payload = { "item_data": {
        "sku": "777111222333",
        "title": "John's Rainbow Light Up Shoes",
        "brand": "John's Shoes",
        "description": "This coolest shoes you'll ever wear!",
        "price": "99.99",
        "subtype_name": "clothing",
        "type_name": "APPAREL",
        "rating": "4",
        "upc": "1456484",
        "availability_status": "IN STOCK",
        "vendor_name": "John's Shoe Awesome Vendor",
        "seller_id": "8675309",
        "vendor_id": "2506678509"
    } }
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/publishers/{publisher_id}/product-db/catalogs/{catalog_id}/items",
  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([
    'item_data' => [
        'sku' => '777111222333',
        'title' => 'John\'s Rainbow Light Up Shoes',
        'brand' => 'John\'s Shoes',
        'description' => 'This coolest shoes you\'ll ever wear!',
        'price' => '99.99',
        'subtype_name' => 'clothing',
        'type_name' => 'APPAREL',
        'rating' => '4',
        'upc' => '1456484',
        'availability_status' => 'IN STOCK',
        'vendor_name' => 'John\'s Shoe Awesome Vendor',
        'seller_id' => '8675309',
        'vendor_id' => '2506678509'
    ]
  ]),
  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;
}

{
  "item_data": {
    "sku": "777111222333",
    "title": "John's Rainbow Light Up Shoes",
    "brand": "John's Shoes",
    "description": "This coolest shoes you'll ever wear!",
    "price": "99.99",
    "subtype_name": "clothing",
    "type_name": "APPAREL",
    "rating": "4",
    "upc": "1456484",
    "availability_status": "IN STOCK",
    "vendor_name": "John's Shoe Awesome Vendor",
    "seller_id": "8675309",
    "vendor_id": "2506678509"
  },
  "object": "product-catalog-item",
  "self": "/v2/publishers/466478/product-db/catalogs/123456/items/777111222333",
  "id": "777111222333"
}