{"message":"Amazon Product Sync Service API","version":"1.0.0","authentication":{"required":true,"methods":["Header: X-API-Key","Query Parameter: ?apiKey=your_key","Request Body: { \"apiKey\": \"your_key\" }"],"note":"All /api/* endpoints require API key authentication"},"endpoints":{"health":"GET /health (no auth required)","syncProducts":"POST /api/products/sync?apiKey=your_key","getAllProducts":"GET /api/products?apiKey=your_key&storeKey=ww","getProductByAsin":"GET /api/products/:asin?apiKey=your_key&storeKey=ww","activateProducts":"POST /api/products/activate?apiKey=your_key","deactivateProducts":"POST /api/products/deactivate?apiKey=your_key","healthCheck":"GET /api/products/health/check?apiKey=your_key&storeKey=ww"}}