Walmart Marketplace is an eCommerce platform operated by Walmart that enables third-party sellers to list and sell their products directly on Walmart.com.

The Marketplace APIs provide resources for sellers and approved Solution Providers to manage their inventory, items, orders, prices, promotions, reports, and more on Walmart.com. The Walmart Developer Portal provides the tools you need to directly integrate with Walmart Marketplace APIs.

Start selling on Walmart Marketplace by learning about the basic requirements and following the step-by-step instructions in this Getting started guide. Whether you're a small independent seller or a large, established brand, this guide equips you with the essential information and resources to successfully launch your business on Marketplace.

Prerequisites

Before calling the Walmart Marketplace APIs, complete the following setup steps.

API Credentials

You must generate API keys (Client ID and Client Secret) from the Walmart Developer Portal. These credentials are required to authenticate requests and obtain access tokens for Marketplace APIs.

Authentication & Authorization

All Walmart Marketplace APIs use OAuth 2.0 for authentication.

• Token Requirement: You must obtain an OAuth 2.0 access token before making API requests.
• Expiration: Access tokens are valid for 15 minutes. Your integration must handle the expires_in field and refresh or re-generate tokens as needed to maintain access.

Learn more

Use the following resources to start selling on Walmart Marketplace using the Marketplace APIs.

• Get an access token using Token API - Details how to use the Token API endpoint to obtain OAuth 2.0 access tokens for Walmart Marketplace APIs. Retrieving access tokens is essential to start integrating with Marketplace APIs.
• Get started as a seller - Provides information on how to register as a seller and provides options on how you can access the Marketplace APIs. You can either choose to directly integrate with the APIs or leverage authorized connections with approved Solution Providers.
• Get started as a Solution Provider - Provides information on how companies can be approved Solution Providers to develop software that could improve sellers’ eCommerce workflows.
• Integrate with Walmart Marketplace APIs - Provides information on available integration guides that show you how to use the Marketplace APIs and provides API integration options.
• OAuth 2.0 authorization - Learn more about the Walmart Marketplace app store authorization workflow. Walmart incorporates an industry-standard OAuth 2.0 token-based authorization and authentication. Market availability: US only
• How to read market availability: Some Walmart Marketplace APIs and features are available in specific regional markets. Each document includes a market availability note so you can easily identify where an API or feature can be used.