Most feed problems start in an app, not in your store. A feed tool rewrites a title, drops a GTIN, or pushes a stale price — and nothing tells you until Google disapproves it. Feed Sentinel audits the feed you already publish against your live catalog, variant by variant, once a day. One email when a NEW mismatch appears, on the day it changed. Price, sale price, availability, title, link, image, status and GTIN are compared via the Admin API. Works alongside your feed app, not instead of it.

• Variant-by-variant comparison of your feed against your live Shopify catalog
• Alerts only for mismatches that are new, never a repeat of yesterday's
• Exact GTIN and price checks through the Admin API, not page scraping
• Run a scan on demand without moving your alert baseline
• Free public checker — try it on any store before you install