Walmart API Advances OAuth Migration
The Walmart API page says legacy Delegated Access keys will remain available through the end of September 2026, while new Solution Providers should migrate to OAuth 2.0.
What are the key facts?
- 1Legacy Delegated Access keys remain available through the end of September 2026
- 2New Solution Providers should migrate to OAuth 2.0
- 3The update was published on or before July 30, 2026
What happened?
The Walmart Marketplace API page states that legacy Delegated Access keys will remain available through the end of September 2026. The page also requires new Solution Providers to migrate to OAuth 2.0 authentication. The source indicates that the update was published on or before July 30, 2026, so it is not strictly news from the past 48 hours. For service providers using the Walmart API, the information still concerns authentication methods and migration arrangements.
What does this mean for cross-border sellers?
Service providers using the Walmart Marketplace API should prepare for the authentication migration: legacy Delegated Access keys remain available through the end of September 2026, and new Solution Providers should migrate to OAuth 2.0. Because the information was published earlier, treat it as an existing migration schedule, audit system dependencies promptly, and avoid waiting until the deadline.
What should sellers do now?
- 1This week, inventory all Walmart Marketplace API integrations and identify applications, accounts, and workflows that still use Delegated Access keys.Platform Policy
- 2Create an OAuth 2.0 migration task for new Solution Providers, assign owners, and divide the authentication work into development, testing, and cutover steps.
- 3Before the production switch, validate OAuth 2.0 authentication in a test environment or low-risk workflow and confirm that orders, inventory, and other integrated processes will not be interrupted.