Walmart Developer Portal

Marketplace seller and supplier developers can get access to API tools and documentation to integrate with the Walmart eCommerce platform.


Marketplace sellers can manage items, orders, prices, inventory and more with Marketplace APIs.

Get started

Learn more


Drop ship vendors can scale their business to present items to millions of customers. To set up your your business with Walmart, use the tools and APIs to provide access to manage the items.

Get started

Learn more


Warehouse Suppliers can set up their business with Walmart APIs to scale their business to make their items available to millions of customers.

Get started

Learn more


Content service providers help suppliers to set up their catalog with Walmart to create enriched content, provide API integration, and act as a bridge between suppliers and Walmart.

Get started

Learn more


Welcome to the Walmart Developer Portal! Marketplace sellers and suppliers can find all the tools they need to begin the API integration process and access the API documentation. The API documentation provides seller and supplier developers and partners with the tools to become Drop Ship Vendors (DSVs), Marketplace Sellers, or Content Service Providers along with the developer solutions to succeed with their customers. Get started now and begin the API integration process and access the API documentation. Also, learn about product XSDs and use the API Explorer page to test your APIs.

We provide a comprehensive suite of tools to support our Partners:
  • API Status checker – Verify status of all APIs.
  • Try it Out – Try out API calls in the browser and view responses.
  • API Sandbox – Test your APIs on the backend.
  • API Documentation – How-to guides, API Reference, and FAQ.
To stay up to date with the latest offerings of the Walmart API Developer Portal, be sure to check out our What’s New page!
Access our comprehensive documentation to learn about our RESTful APIs. The API reference provides details about the endpoints, request/response structures, and sample codes. You can also find information about throttling limits, error codes, and other useful information. In addition, you can download the latest version of the XSDs.

How to get started

How do I get started?
Register to get your API Key

To get your API key, you need to register as a Marketplace Seller, Supplier, Solution Provider or Content Service Provider:

1. Fill out the registration form.
Solution Provider: and work with your seller to get your delegated access keys.
Supplier or Drop Ship Vendor:
Marketplace Sellers: login to the seller center to get your Client ID and Client Secret.
Content Service Providers: send an email to:
2. You will receive your portal login credentials after registration.
3. Login to the Developer Portal to get your API keys.
How do I integrate my application with the platform?
Integrate Your Application with Item Management APIs

Use the API Explorer page to test the APIs. Integrate your application with the item management platform by calling the item management APIs.
For setting up an item, use the provided XSDs to build an XML payload to ingest item feeds.

How can I test out my APIs? Do you have a test environment?

Yes! Use Walmart API Sandbox

The Walmart API Sandbox provides an environment to test Walmart APIs to ensure a successful integration and production launch. The Sandbox is only for backend testing of APIs and there is not an option to view or test on This environment uses test-only elements and simulated responses (based on mock data) and calls to applications in realtime.

All URLs, Endpoints, Users, Items, Orders, and currency/funds within the Sandbox are for testing purposes only. This environment provides production simulation, debugging, reports and ability to monitor API behavior before moving to production.

See what's new

Sellers can see how items perform with Listing Quality APIs

Marketplace sellers can now gain valuable insights into the performance of their items, fetch actionable listing quality data at the item-level, locate the number of items with issues per category, and see their overall catalog’s listing quality score with the new Listing Quality APIs. Get seller’s listing quality score – View a seller’s Listing Quality score […]

New Marketplace Item spec v4.2

We recommend that Marketplace sellers use the new MP_ITEM_SPEC version 4.2 that has removed the removed ProductTaxCode attribute. Tax codes are now auto-generated and assigned to items during the item setup process. Sellers can override a product tax code that was auto-assigned when the item was initially set up. The MP_ITEM_MAINTENANCE spec version 4.1 has the ProductTaxCode attribute that you can use […]

Marketplace sellers can update inventory across multiple fulfillment centers

Marketplace sellers can now update their item inventories at multiple fulfillment centers, aka ship nodes with the new Inventory APIs. Sellers can access accurate Inventory counts that subtract all in-progress orders, so they can see only inventory that is available for sale. The new parameter availToSellQtyprovides inventory available for each fulfillment center. You can use […]

Marketplace sellers can set sales restrictions by state or zip code for WFS-eligible items

There is a new requirement to set up items that are eligible for WFS fulfillment. You must indicate item Sale Restrictions by geographic location: State or Zip Code (also known as “State Restrictions). If there are no restrictions, you can set the Restriction Type to “None.” The updated specs provide a StateRestrictions section to provide state code […]

Marketplace Orders have status “Delivered”

Marketplace sellers can now keep track of orders that are delivered with the new “Delivered” status. You can verify Purchase Orders are delivered by calling the GET All Orders API. To see the new status, “Delivered,” see GET All Orders in the API Reference.

Dev Portal UI redesign for better navigation

We are excited to announce the developer portal UI design updates, so you can navigate easily between the Guide and Reference for each API. Key improvements include a persistent top navigation with Guide and Reference tabs, and drop-down menus for both Guide and Reference to quickly switch between API groups.