Action Required: The ability for approved Solution Providers to create new Delegated Access keys will be retired on July 30, 2026. Existing Delegated Access keys will be retired and will stop working on October 1, 2026.
Seller: Connect directly with your Solution Provider through the Walmart App Store to ensure uninterrupted service.
Approved Solution Providers: Migrate your sellers to OAuth 2.0 by instructing them to reauthorize their app connections using the Connect button in the Walmart App Store.

Marketplace Partners

Unlock the power of Marketplace APIs to manage items, orders, pricing, and so much more.

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Sellers

Integrate with our APIs to start selling on Walmart.com.

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Solution Providers

Leverage our APIs to build e-commerce solutions.

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Popular APIs to help you get started

From managing items to tracking fulfillment — explore our most popular endpoints.

Items

Create and manage item listings on Walmart.com.

Inventory

Keep your item inventory up-to-date.

Promotions

Set promotional item prices for events such as clearance sales or call out comparison prices

Ship with Walmart

Ship with Walmart (SWW) enables sellers to buy shipping at discounted rates directly from Walmart to ship their goods to U.S. customers.

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Track your progress

Use testing environments and real-time API status updates to build solutions that last.

API health dashboard

Monitor API health and performance in real-time.

Sandbox testing

Develop and test API integrations securely.

What's new?

The latest platform updates — here to help you build with confidence.

June 08, 2026

Update: Get pricing recommendations with pricing insights

We updated the pricing insights API to include Walmart-recommended pricing information.

May 25, 2026

New: Assortment Recommendations API tag fields

The Assortment Recommendations API has new tag values to help sellers understand why an item is recommended.

May 14, 2026

New: Item spec version

Item spec version 5.0.20260330-14_47_14-api is now available for MP_ITEM, MP_MAINTENANCE, MP_WFS_ITEM, and OMNI_WFS feed types.

May 07, 2026

Update: Item Search API spec-format and ASIN

Item Search API now supports ASIN search and responseFormat=SPEC for item setup workflows.