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Guide
Integrate with APIs: Overview
Last updated on Jun 23, 2025
Reading time: 2 min
Overview

Walmart Marketplace provides a suite of APIs that allow sellers to manage product listings, inventory, orders and more on Walmart.com. By integrating APIs into your business tools, like inventory management software, you can automate routine tasks that would otherwise be done manually, such as updating stock counts and processing orders. In this guide, you'll learn what APIs are, how they work and how you can use them to streamline tasks and scale your operations. 

How does it work?

An application programming interface (API) is a digital bridge that allows two software programs to communicate with each other. In an eCommerce business, this means you can automate tasks like updating inventory, managing orders or syncing product details between your current business tools and your Walmart Marketplace listings.

Walmart uses REST APIs, which enable your software to send and receive data using simple web requests. For example, your inventory tool can ask Walmart for the latest order details or tell Walmart when stock levels change.

To keep everything secure, Walmart uses OAuth 2.0 Authorization. This ensures that only approved users, such as you or your developer team, can access your data. Upon setting up, you’ll receive API keys (specifically, a Client ID and Client Secret) which are secure digital credentials your software uses to connect with Walmart. 


Additional guidelines

To get started integrating Walmart Marketplace APIs, follow this guide to learn how to retrieve your API Keys.

You can integrate APIs directly to your existing business software, or you can work with an approved Solution Provider to create custom tools.

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