async function validateLicenseKey(licenseKey, platform) {
  const response = await fetch('https://premiumlauncher.com/api/license-keys/validate', {
    method: 'POST',
    headers: {
      'X-API-Key': process.env.PREMIUM_LAUNCHER_API_KEY,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({ licenseKey, platform }),
  });

  const data = await response.json();
  return data.valid === true;
}

// Usage in route handler
app.post('/api/submit', async (req, res) => {
  const { licenseKey, productData } = req.body;
  
  const isValid = await validateLicenseKey(licenseKey);
  if (!isValid) {
    return res.status(403).json({ error: 'Invalid license key' });
  }
  
  // Process submission...
  res.json({ success: true });
});

import requests
import os

def validate_license_key(license_key, platform):
    response = requests.post(
        'https://premiumlauncher.com/api/license-keys/validate',
        headers={
            'X-API-Key': os.getenv('PREMIUM_LAUNCHER_API_KEY'),
            'Content-Type': 'application/json',
        },
        json={'licenseKey': license_key, 'platform': platform}
    )
    
    data = response.json()
    return data.get('valid', False) === True

# Usage in route
@app.route('/api/submit', methods=['POST'])
def submit_product():
    license_key = request.json.get('licenseKey')
    
    if not validate_license_key(license_key):
        return jsonify({'error': 'Invalid license key'}), 403
    
    # Process submission...
    return jsonify({'success': True})

function validateLicenseKey($licenseKey, $platform) {
    $apiKey = getenv('PREMIUM_LAUNCHER_API_KEY');
    $url = 'https://premiumlauncher.com/api/license-keys/validate';
    
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, [
        'X-API-Key: ' . $apiKey,
        'Content-Type: application/json',
    ]);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
        'licenseKey' => $licenseKey,
        'platform' => $platform
    ]));
    
    $response = curl_exec($ch);
    curl_close($ch);
    
    $data = json_decode($response, true);
    return isset($data['valid']) && $data['valid'] && $data['status'] === 'active';
}

// Usage
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $licenseKey = $_POST['licenseKey'] ?? '';
    
    if (!validateLicenseKey($licenseKey)) {
        http_response_code(403);
        echo json_encode(['error' => 'Invalid license key']);
        exit;
    }
    
    // Process submission...
}