Marketplace Monitoring for US Online Marketplaces
Know exactly who is selling your products, who owns the Buy Box, and which sellers are breaking your pricing rules. We monitor Amazon, Walmart Marketplace and eBay so US brands and sellers can defend share, pricing and listing integrity in real time.
On US marketplaces, your brand is being sold without you watching
A single Amazon or Walmart listing can carry dozens of third-party sellers — and the situation changes hourly. A rogue seller wins the Buy Box, an unauthorized reseller undercuts your MAP price, a competitor edits your listing content, and a counterfeit offer appears overnight. By the time a brand team notices through manual checks, the damage to price integrity and Buy Box share is already done.
Marketplace monitoring that protects your brand
This is decision-ready seller intelligence — built so your brand, channel and legal teams can act before a violation costs you revenue.
Buy Box ownership changes captured as they happen, not days later.
Visibility into every seller on every listing you choose to track.
From your ASIN or listing list to a validated marketplace monitoring pilot.
Every marketplace signal that affects your revenue
We deliver structured fields engineered for brand protection and channel management across US marketplaces.
Buy Box ownership
Current Buy Box winner, their price and fulfillment type, refreshed hourly.
Seller list
Every seller on each listing, with seller name, rating and offer count.
New seller alerts
Sellers flagged the moment they appear on a tracked listing.
MAP violations
Offers below your minimum advertised price, flagged with seller details.
Offer price & condition
Each seller's price, condition (new/used) and shipping terms.
Listing content changes
Title, image and bullet edits — so hijacked content is caught fast.
Stock & suppression
Availability status and suppressed or inactive listing detection.
Ratings & review shifts
Review count and rating movement that signals listing health.
The US marketplaces where your brand lives
Need more US marketplaces?
We can extend the same monitoring schema to additional US marketplaces in a later phase, so all your channels report into one unified feed.
What US brands and sellers do with this intelligence
One marketplace monitoring feed supports brand protection, channel control and sales strategy at once.
Buy Box recovery
See when you lose the Buy Box and to whom, then act to win it back.
MAP enforcement
Build evidence for enforcement against sellers breaking your MAP policy.
Unauthorized seller control
Identify grey-market and unauthorized sellers on your listings.
Listing integrity
Catch hijacked titles, images and content before sales suffer.
Counterfeit detection
Spot suspicious low-price offers that signal counterfeit risk.
Channel reporting
Give leadership a clear view of marketplace health by SKU and seller.
This is what your team receives
Clean, validated rows mapped to each listing and seller you track. Fields and rules are customized to your brand — example schema below.
marketplace_monitoring_sample.csv
● LIVE SCHEMA
| ASIN / Listing | Marketplace | Buy Box Seller | Buy Box Price | Sellers | MAP Flag | New Seller | Detected (UTC) |
|---|---|---|---|---|---|---|---|
| B07ABC4421 | Amazon | ShopRite-US | $129.00 | 7 | OK | — | 2026-05-19 11:00 |
| B07ABC4421 | Amazon | DealZone | $112.50 | 9 | VIOLATION | Yes | 2026-05-19 12:00 |
| WM-552-118 | Walmart | BrandStore | $129.00 | 3 | OK | — | 2026-05-19 12:00 |
From listing list to live marketplace monitoring
A simple five-step path — and you talk directly to the engineers building your pipeline.
Send your listings
Share your ASINs or listing URLs, plus your MAP and authorized-seller lists.
We configure tracking
We set up Buy Box, seller and listing capture per marketplace.
Scheduled refresh
Buy Box hourly, seller and content fields daily or custom.
You receive data
Clean output via CSV, JSON, API or dashboard.
Alerts trigger
Notifications fire on Buy Box loss, MAP breaks and new sellers.
A US-focused marketplace monitoring partner
We focus on US marketplaces and US response hours — so your brand team gets fast pilots and feeds tuned to how Amazon, Walmart and eBay actually behave.
Hourly Buy Box tracking
Ownership changes surfaced within the hour they happen.
MAP enforcement-ready
Violations logged with seller, price and timestamp evidence.
One unified schema
Every marketplace reports into a single, consistent feed.
Alert-driven
Your team is notified, not left to dig through reports.
About marketplace monitoring
We monitor Amazon, Walmart Marketplace and eBay as standard, and can add Target Plus, Newegg and other US marketplaces on request. Each marketplace is tracked with its own schema for Buy Box, sellers and listing fields.
Yes. We capture the current Buy Box winner, their price and fulfillment type at every refresh, so you get a full timeline of Buy Box ownership changes for each ASIN or listing you track.
Yes. When you provide your MAP price list, we flag every seller offering a tracked product below your minimum advertised price, with the seller name, price and timestamp for enforcement.
Yes. We track the full seller list on each listing and flag new sellers as they appear. Compared against your authorized-seller list, this surfaces unauthorized and grey-market sellers quickly.
Buy Box and price fields can be refreshed hourly for most listings; seller and listing-content fields are commonly refreshed daily. We confirm a realistic cadence per marketplace before the pilot.
We deliver CSV, JSON and Parquet files, REST API endpoints, SFTP and cloud destinations, plus an optional dashboard with seller and Buy Box alerts. Delta-only feeds are standard.