New: WFS Inventory API

We’re pleased to announce the launch of a new WFS Inventory API.

The WFS Inventory API provides real-time inventory data for items fulfilled through Walmart Fulfillment Services (WFS). This API allows you to monitor stock availability, retrieve detailed inventory information, including stock status, item lifecycle status, and inventory age. By querying for specific SKUs, you can access a wide range of inventory metrics, to ensure optimal stock management, streamline operations, and make informed decisions about your WFS inventory.

This API has many exciting improvements:

• Sellers can query for their entire catalog or individual SKUs
• Sellers can retrieve detailed inventory information such as Available units, Inbound Units, Aged Units, Forecast, Days of Supply, Surplus Units, and Publishing and Lifecycle Status

The existing API will be deprecated on March 03, 2026, and we recommend transitioning to the new WFS Inventory API before this date.