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Guide
API integration for WFS
Last updated on May 1, 2025
Reading time: 3 min
Overview
Learn how to automate your Walmart Fulfillment Services (WFS) business by integrating directly with APIs. As an alternative to Seller Center, you can use APIs to convert items, manage inventory, submit inbound orders and more. Explore all APIs and documentation in the Developer Portal.  

How does it work?  

Walmart Marketplace APIs create a seamless data exchange between your system and ours. To get started, you need a Client ID and a Client Secret to access the APIs. You’ll need these credentials to generate a token for every API call. Go to the Getting started guide for sellers to learn how. 

In Developer Portal, you’ll see all available APIs and reference guides. You can manage almost every part of your business through APIs, including: 

  • Add or convert items in your catalog 
  • Check if items are on hold due to hazardous materials 
  • View or update current inventory 
  • Create inbound orders to ship inventory 
  • Get payment and inventory health reports 

Some functionality will be through Marketplace APIs (such as GET All orders), and other functionality will be through WFS APIs (such as POST Convert items for WFS). For WFS-specific actions, look for Walmart Fulfillment Services in the left-hand menu, or search for actions. 

Notes

You may still need to do some actions in Seller Center. For example, Walmart Preferred Carrier quotes are not available for full truckload (FTL) via API. 

Solution providers 

A solution provider is a third-party company in the Walmart network that provides specialized services to help you run your business. For example, they can help you with item management, inventory, pricing and more. Each integration is tailored to your specific needs, so reach out to an approved solution provider to learn about costs, features and capabilities. You can also use multiple solution providers to manage different parts of your business. 

Here are solution providers that are tailored to WFS: 

Type

Services

Solution provider

Full service 

Item setup and management, inventory, order fulfillment, pricing and more

Specialty

Management of specific business functionalities rather than a full suite

  • GeekSeller 
  • Zentail

To give an approved solution provider access to your Marketplace data, connect them from the Apps page in Seller Center.  

Pro tip

If you’re using Multichannel Solutions, learn more about which APIs and solution providers we offer for the program. 

Get help 

If you have any trouble setting up APIs or solution providers, contact Support. Select the Help button in the Seller Center menu bar, then describe your issue. 

If you’re having issues with adding items, creating in inbound order or checking customer orders, check out these guides for common errors and how to solve them: 

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