One feed. Your assigned catalog.

# Full inventory: omit --data-urlencode.
# Specific products: include the comma-separated sku parameter.
curl --silent --show-error --fail-with-body \
  --user "$MEDIDENTA_CONSUMER_KEY:$MEDIDENTA_CONSUMER_SECRET" \
  --header "Accept: application/json" \
  --get "https://hub.medidenta.com/api/inventory.php" \
  --data-urlencode "sku=SKU-100,SKU-200"

// Server-side Node.js 18+; no browser credentials.
async function syncInventory() {
  const key = process.env.MEDIDENTA_CONSUMER_KEY;
  const secret = process.env.MEDIDENTA_CONSUMER_SECRET;
  if (!key || !secret) throw new Error('Configure API credentials');

  const url = new URL('https://hub.medidenta.com/api/inventory.php');
  const skus = ['SKU-100', 'SKU-200']; // Use [] for full inventory.
  if (skus.length) url.searchParams.set('sku', skus.join(','));

  const response = await fetch(url, {
    headers: {
      Authorization: 'Basic ' + Buffer.from(key + ':' + secret).toString('base64'),
      Accept: 'application/json'
    }
  });
  const data = await response.json();
  if (!response.ok) throw new Error(`HTTP ${response.status}: ${data.code}`);
  console.log(data.meta.returned_count, data.products);
}
syncInventory().catch(error => {
  console.error(error.message);
  process.exitCode = 1;
});

# Python 3 standard library; no extra packages.
import os, json, base64
from urllib.request import Request, urlopen
from urllib.parse import urlencode
from urllib.error import HTTPError

key = os.environ['MEDIDENTA_CONSUMER_KEY']
secret = os.environ['MEDIDENTA_CONSUMER_SECRET']
auth = base64.b64encode(f'{key}:{secret}'.encode()).decode()
skus = ['SKU-100', 'SKU-200']  # Use [] for full inventory.
url = 'https://hub.medidenta.com/api/inventory.php'
if skus:
    url += '?' + urlencode({'sku': ','.join(skus)})
request = Request(url, headers={
    'Authorization': 'Basic ' + auth,
    'Accept': 'application/json'
})
try:
    with urlopen(request, timeout=60) as response:
        data = json.load(response)
    print(data['meta']['returned_count'], data['products'])
except HTTPError as error:
    detail = json.loads(error.read())
    raise RuntimeError(f"HTTP {error.code}: {detail.get('code')}") from error

<?php
// PHP 8+ with the cURL extension enabled.
$key = getenv('MEDIDENTA_CONSUMER_KEY');
$secret = getenv('MEDIDENTA_CONSUMER_SECRET');
if (!$key || !$secret) throw new RuntimeException('Configure API credentials');
$skus = ['SKU-100', 'SKU-200']; // Use [] for full inventory.
$url = 'https://hub.medidenta.com/api/inventory.php';
if ($skus) $url .= '?' . http_build_query(['sku' => implode(',', $skus)]);
$ch = curl_init($url);
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPAUTH => CURLAUTH_BASIC,
    CURLOPT_USERPWD => $key . ':' . $secret,
    CURLOPT_HTTPHEADER => ['Accept: application/json'],
    CURLOPT_CONNECTTIMEOUT => 10,
    CURLOPT_TIMEOUT => 60,
]);
$raw = curl_exec($ch);
if ($raw === false) throw new RuntimeException(curl_error($ch));
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
$data = json_decode($raw, true, 512, JSON_THROW_ON_ERROR);
if ($status >= 400) throw new RuntimeException('HTTP ' . $status . ': ' . $data['code']);
echo $data['meta']['returned_count'] . ' products returned';