Walmart Marketplace API: Everything You Need to Know

4 min readOct 17, 2023

Thanks to the powerful Walmart Marketplace API, integrating your eCommerce software with the Walmart marketplace has always been challenging. This integration provides many opportunities to increase your sales and brand exposure.

Walmart is a global retail giant that offers an online marketplace for third-party businesses to showcase and sell their products to millions of customers. The Walmart Marketplace API is a robust tool that enables eCommerce software businesses to seamlessly integrate their systems with Walmart’s platform, ensuring a smooth and efficient selling process.

Understanding and utilizing the Walmart Marketplace API is crucial for success in the online marketplace, whether you are a small business owner or a large-scale enterprise. This article will provide all the information you need about Walmart Marketplace API, including its features, benefits, and how to integrate it with your existing systems. With this powerful tool, get ready to take your business to the next level.

What is the Walmart Marketplace API?

The Walmart Marketplace API is a programming interface designed for developers to connect their systems with Walmart. It offers a variety of tools, methods, and protocols to help with retrieving data, managing inventory, processing orders, and other tasks related to selling products on Walmart’s online marketplace.

API is a digital bridge, connecting your eCommerce software with Walmart Marketplace and external tools, allowing for data synchronization, automation, and real-time updates.

What are the key features of the Walmart Marketplace API?

Connecting your app or software with the Walmart API enables retrieval of information about Walmart products, categories, pricing, shipments, etc. Businesses can easily integrate their software with Walmart’s platform and access key features to streamline operations.

Let’s explore how businesses on Walmart’s marketplace can benefit from the various features offered by the API.

Faster Time-to-Market: By using pre-built APIs available in the marketplace, developers can save significant time that would otherwise be spent on building functionalities from scratch. This allows companies to bring their products and services to market faster.

Security and Compliance: API marketplaces often enforce security standards and guidelines for APIs. This helps maintain a certain level of security and compliance when integrating external services into applications.

Scalability: Many marketplaces offer APIs designed to scale effortlessly, enabling applications to handle increased loads without significant degradation in performance.

Seamless Integration: The API enables seamless integration, connecting businesses’ existing software with Walmart’s marketplace, eliminating manual data entry and reducing errors.

Businesses can save time, improve efficiency, and maximize sales potential by utilizing the key features of Walmart Marketplace API, one of the largest online marketplaces.

Main Challenges of In-House Walmart Marketplace API Integration

Integrating the Walmart Marketplace API can be complex and challenging for software providers who want to integrate it with popular shopping carts and marketplaces. The Main Challenges of In-House Walmart Marketplace API integration are:

Technical Expertise: Integrating the Walmart Marketplace API requires a deep understanding of programming languages, web development, and API integrations. With the necessary technical expertise, businesses may be able to integrate the API successfully.

Data Management: Managing and synchronizing a lot of product data between the business’s system and the Walmart Marketplace can be overwhelming. A robust data management system makes it easier to ensure that product information, inventory levels, and pricing are accurately updated in real-time.

Compliance and Security: Integrating with the Walmart Marketplace API can be challenging due to the strict guidelines and requirements set by Walmart. To ensure compliance with these guidelines and maintain data security, businesses must implement appropriate security measures and regularly update their systems.

Ongoing Maintenance and Support: API integrations require constant maintenance and support to ensure smooth operations. This includes monitoring for errors, troubleshooting issues, and keeping up with any updates or changes to the API. Without proper maintenance and support, businesses may experience disruptions in their marketplace operations.

Integrating the Walmart Marketplace API in-house requires technical expertise, effective data management, compliance and security measures, ongoing maintenance and support, and scalability considerations. Overcoming these challenges is crucial for software developers looking to integrate with the Walmart Marketplace.

How can a third-party solution can help you with Walmart Marketplace API?

Managing multiple eCommerce platforms can be complicated and time-consuming, especially when integrating and synchronizing data. This is especially true for Walmart Marketplace, which has a unique API that requires expertise and resources to work with effectively.

Running your Walmart Marketplace store manually without a dependable solution can lead to mistakes, inconsistencies, and wasted time. This, in turn, can cause missed sales opportunities, unhappy customers, and revenue loss. Moreover, creating and sustaining your API integration can be expensive and require significant resources.

API2Cart provides a comprehensive solution for effortless integration and management of Walmart Marketplace API. With API2Cart, you can easily connect your software to Walmart Marketplace and synchronize real-time data.

API2Cart offers a single, integrated API that enables you to retrieve and handle data from various eCommerce platforms and marketplaces, including Walmart Marketplace. This means you can simplify your operations, minimize manual labor, and ensure accurate and current data across all platforms.




API2Cart is a unified API provider that establishes integration with 40+ shopping carts, including Magento, WooCommerce, Bigcommerce, Shopify, PrestaShop, etc.