Your title, bullets, description, images, category and variations can change on Amazon without anyone telling you. Sometimes Amazon does it, sometimes it's another seller's update or a catalog feed.
SentryKit checks every listing you sell and emails you the field that changed, what it said before and what it says now.
Amazon listing change alerts for every part of your listing.
Five kinds of change, one alert. Pick one to see the email it sends.
Title, bullets & description →
Amazon trimmed your title or rewrote a bullet. You get the old text and the new text, with the changed words marked.
Main image & gallery →
Your main image or a gallery image was swapped, added or removed. Both images, side by side.
Variation split →
A child ASIN left its parent, moved to another parent, or the variation theme changed. This is often how reviews end up split.
Category & product type →
Amazon moved the ASIN to another category or product type, including GL changes. That can change where you rank and the referral fee you pay.
Hidden fields →
The fields shoppers never see but Amazon uses: item type keyword, search terms, country of origin, hazmat, dimensions and weight. Shown with plain names, and Amazon's field name underneath.
Every change is saved to the product's timeline, and each alert comes with a PDF of the full before and after.
⏱ Checked every 15 minutes · 3 of 3 US listings checked. Example alert, product details are illustrative.
SentryKitBackend Attributes Checked every 15 minutes
FRESH FINEST PURE MAPLE SYRUP 12OZ
ASIN: B0FFSYRUP1 · US MARKETPLACE
BACKEND ATTRIBUTE CHANGE PDF ATTACHED
1 of 41 fields changed on this listing.
Fields changed
1 of 41
Field groups
1 of 7
US listings checked
3 of 3
Identity & classification
Item type keyword
item_type_keyword
maple-syrup→pancake-syrup
PDF
SentryKit_Attribute_Changes_B0FFSYRUP1_2026-10-16_1308.pdf is attached, with the full before and after values. Download the PDF · link expires in 7 days
Download the PDFAlert settings
⏱ Checked every 15 minutes · 3 of 3 US listings checked. Example alert, product details are illustrative.
Get each change as it's found, or in a daily or weekly digest, by email, Slack, Microsoft Teams, ClickUp, a webhook or our API. Filter it by brand and storefront.
Your Settings
You choose which changes you hear about.
A listing change alert is only useful if you read it. So you decide what we send, when, and to whom.
Pick the field groups
Turn each group on or off: content, images, variations, category, compliance, shipping and offer. Keep the ones you act on.
Pick the timing
Each change as it's found, or one daily or weekly digest with every change across your catalog.
Pick who gets it
Send alerts by brand and storefront to the right person, by email, Slack, Teams, ClickUp, webhook or API.
Bulk edits stay quiet
When hundreds of listings change in one check, you get up to five detailed emails and one summary with a PDF for the rest.
Why It Happens
Why your Amazon listing changes without you.
Amazon builds each product page from several sources: your listing, other sellers' updates on the same ASIN, manufacturer and catalog data, and its own rules. When it decides another version is better, it shows that version. It doesn't email you when that happens, even when your own information was correct.
That's how a title gets shortened, a main image gets replaced, a child ASIN drops out of its variation, or a product moves to a new category overnight. SentryKit shows you what changed and when. Amazon doesn't share who made a change, so the alert doesn't guess.
Open the product page and, in Seller Central, Inventory > Manage All Inventory > Edit. If the live page shows something you didn't submit, Amazon is showing another version.
2
Resubmit the field, or fix the variation.
Update the changed field from the Edit page. For a split variation, open the parent in Manage Variations (or the Variation Wizard) and add the child back. For a category or product type change, check that your product type and item type keyword still match the product.
3
If you own the brand, use Brand Registry.
Brand owners can contact Brand Registry Support and ask for the brand's content to be restored. Attach the before and after from your alert PDF.
4
If it changes back again, open a case and keep the history.
Open a Seller Support case with the ASIN, the field and the dates. Every change is saved to the product's timeline, so you can show how often it happened.
Or let SentryKit watch every listing for you.
The listing change alert tells you which field changed, what it said before and what it says now, for content, images, variations, category and hidden fields. On every plan, with a 14-day free trial and no credit card.
No. Amazon doesn't send a notice when your title, bullets, description, images, category or variation changes, even when it's Amazon's own catalog that made the change. You might get a listing issue in Seller Central if the change breaks a policy, but most changes are silent. SentryKit checks your listings every 15 minutes and emails you what changed, with the before and after.
Amazon builds the product page from several sources: your submissions, other sellers' updates on the same ASIN, manufacturer and catalog data, and its own rules. If it decides another version is better, that version goes live. Amazon doesn't share who made a change, so SentryKit shows what changed and when, not who.
A child ASIN can lose its parent, move to another parent, or the parent's variation theme can change, often after a catalog update or an edit to the parent. Reviews are shared across a variation family, so a child that drops out can show fewer ratings on its own page. SentryKit alerts you when the parent ASIN, the list of child ASINs or the variation theme changes, so you can fix it in Manage Variations.
Amazon files each product under a category (browse node), a product type and an internal product group, often called the GL. When Amazon moves an ASIN, it can change where you rank, which filters you show up in, and the referral fee you pay. SentryKit's alert shows the old and new category, product type and item type keyword.
They're the fields shoppers don't see but Amazon uses for search, compliance and fulfilment, such as item type keyword, search terms (generic keyword), country of origin, hazmat and battery details, package dimensions and weight. SentryKit watches them alongside your title and images, and shows each one with a plain name and Amazon's field name underneath.
Every 15 minutes, on every listing you sell. Each alert comes with a PDF of the full before and after, and every change is saved to the product's timeline.
Yes. You can turn each field group on or off (content, images, variations, category, compliance, shipping and offer), choose instant alerts or a daily or weekly digest, and route alerts by brand and storefront to email, Slack, Microsoft Teams, ClickUp, a webhook or our API. When a bulk update changes many listings at once, you get up to five detailed emails and one summary for the rest.
Every SentryKit plan, in all 22 Amazon marketplaces. Plans start at $19/month with a 14-day free trial and no credit card.
