CASE STUDY

Opus caught an Amazon bug
that quietly killed a listing

Without the AI agent, this could've stayed buried for months
before anyone even noticed it — let alone started fixing it

May 2026 · 4 min read

Amazon is a powerful machine — so complex that even Amazon's own teams can't always tell you why something went wrong or how to fix it. And every seller knows a bug on Amazon's side turns into losses on yours.

The good thing is, super-smart AI agents have arrived — ones that take the initiative and keep an eye on the things you'd never even think to check yourself.

We've already told the story of how Claude Code created an Ad adjustment plan and prevented a stockout and overstock. Today, that story continues: the recommendations included one more item — Diagnostics (no sales — needs investigation).

Device frame — Ad adjustment plan created by Claude Code. Click to expand full image

Ad adjustment plan created by Claude Code. Click to expand full image

Here's what the PPC manager did with it.

The built-in agent

The PPC manager — who runs ads and pricing — has no AI agent subscription of their own (like ChatGPT, Claude, or Gemini).

With PROPAMP AI you don't need one: you open a chat inside the platform and work with the agents there. They're connected to the seller's data, so everything needed for analysis and recommendations is already available to them.

The PPC manager picked Opus from the list of models and asked: two SKUs in France, zero sales for 30 days, ads are live — what's going on?

Opus didn't stop at the two SKUs. It pulled every SKU with zero sales across all 16 marketplaces into a table — and added a stock on hand column.

Zero-sales report generated by the built-in Opus agent in PROPAMP AI. Click to expand full image

Most of the zero-sales SKUs lined up with an empty stock-on-hand column — out of stock, nothing to sell. But the two flagged for investigation stood out: zero sales, and plenty of units sitting in FBA. Sellable stock that wasn't selling a single unit.

Opus laid out what to check next, and putting eyes on the listing was on the list.

What it turned out to be

On the France marketplace, the New condition was showing as unavailable on both SKUs. The stock was there, the listing was live — but no customer could actually buy it. Nothing on the seller's end was broken.

Listing with anavailable SKU. Click to expand full image

The seller's team opened a case with Amazon. Amazon's own techs couldn't fix it on the spot — it traced back to a deeper bug on Amazon's side, and what followed was a long back-and-forth that's still going.

So the problem isn't solved yet. But it's found — and it was found only because the agent went looking where no one else would have.

Here's how the PPC manager put it:

"I've worked at a lot of ppc agencies, and I'll tell you straight — once a listing is optimized, nobody goes back in just to 'check' that nothing broke. There's no reason to.

So without the agent, this could've stayed buried for months before anyone even noticed it — let alone started fixing it."

Now they have Opus run the same check — zero sales against stock on hand — every week, plus a stack of other analytics on top.

Instead of digging through reports, the PPC manager gets to spend that time on strategy and competitor research.

Setup

PROPAMP AI -
inventory and profit data from Seller Central across all marketplaces,
plus AI agents built right into the platform (this run was on Opus) -
$47/month

Time to surface the issue:
a few minutes, from a one-line question in the chat.

Start your free PROPAMP AI trial →

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