Walmart Opens Performance API: Overseas-Warehouse Sellers Need to Upgrade Monitoring
Walmart has opened a seller-performance data API supporting metric monitoring, downloads, and order-level Excel files, requiring sellers to prepare system integration.
What are the key facts?
- 1Walmart opens API access to retrieve and download seller-performance data
- 2The API can monitor multiple seller-performance metrics
- 3Performance data is refreshed every 24 hours
- 4Order-level Excel files can be generated
- 5The change affects multiple seller types on the U.S. Walmart Marketplace
What happened?
Walmart’s latest developer announcement shows that seller-performance standards are no longer available only through Seller Center. Sellers and approved Solution Providers can now retrieve and download related performance data through the API. Monitored metrics include cancellation rate, on-time delivery rate, refund rate, customer-service response rate, valid tracking rate, carrier-method accuracy, on-time shipment rate, and ship-from-location accuracy. The relevant datasets are refreshed every 24 hours and can generate order-level Excel files.
The change is not a new commission or logistics-fee adjustment, but it will change how cross-border sellers manage their accounts. Sellers using third-party software can connect late shipments, tracking-number anomalies, cancellation rates, and customer-service responses to automated alert systems, instead of waiting for platform penalties before conducting manual checks. The change particularly affects overseas-warehouse sellers on the U.S. Walmart Marketplace, sellers using WFS or third-party fulfillment, and brands managing large numbers of SKUs. Sellers should check API permissions, token-refresh mechanisms, and data-field mappings to ensure their operating systems can continuously read performance data.
What does this mean for cross-border sellers?
Walmart is making seller-performance data available to sellers and approved Solution Providers, allowing overseas-warehouse, WFS, and third-party fulfillment sellers to reduce reliance on manual checks in Seller Center. Add API permissions, token refreshes, field mappings, and the 24-hour update cycle to daily operations, or you may miss abnormalities in shipping, tracking, cancellation, or customer-service metrics.
What should sellers do now?
- 1This week, verify API permissions, token-refresh mechanisms, and field mappings for U.S. Walmart Marketplace overseas-warehouse stores, covering metrics such as cancellation rate and on-time delivery rate, and produce a configuration checklist that supports continuous data retrieval.Listing character checker
- 2This week, connect late shipments, tracking-number anomalies, cancellation rates, and customer-service response rates for WFS or third-party fulfillment stores to an alert workflow; verify the refreshed data every 24 hours and retain test-alert records.AI Customer Service
- 3This week, generate order-level Excel files for brand stores with large SKU counts, check whether order, shipment, and tracking data can be traced item by item, and prepare an abnormal-order list for operations review.