Walmart Delegated Access to OAuth 2.0 Migration Kit for Shopify Integrations technical specification

Walmart Delegated Access to OAuth 2.0 Migration Kit for Shopify Integrations

Compatibility

Runtimes: Node.js 22.12+
Frameworks: Framework-neutral (minimal Node server example included)
Libraries: No required Walmart client library (injected transport boundary)
API versions: Walmart Marketplace US OAuth 2.0 (App Store authorization-code flow), Walmart Delegated Access (legacy detection and transition source)
Requirements: Approved Walmart Solution Provider status or active approval/publication process, Registered Walmart App Store application with login and callback URLs, Buyer-owned secure key management and persistent store for refresh tokens, Seller reconnection through the Walmart App Store for each migrated connection, Existing custom connector code that authenticates Walmart Marketplace API calls
Skill level: Intermediate TypeScript, Walmart Marketplace API authentication, and host persistence integration

Best fit

Custom Node.js/TypeScript Shopify-to-Walmart connectors
Approved Solution Providers with an App Store application or publication in progress
Teams migrating seller-by-seller before Delegated Access stops working at the end of September 2026

Not a fit

Shopify Marketplace Connect or another managed provider owns the Walmart connection
You do not own custom connector code that authenticates Walmart Marketplace API calls
You are not an approved Walmart Solution Provider and have no active approval or publication process
Direct-seller credentials, non-US marketplaces, or supplier and first-party authentication models
Buyers expecting a hosted OAuth service, automatic seller migration, or buyer-specific implementation

May require adaptation

Non-TypeScript hosts that cannot adapt reference code
Host-specific persistence, key management, seller mapping, and deployment conventions

Not included

Walmart Solution Provider approval or App Store publication
A hosted OAuth callback, credential vault, database, or KMS service
Shopify OAuth, sessions, webhooks, or product/order/inventory business logic
Automatic seller outreach, consent, or Seller Center automation
Dual writes, traffic mirroring, or automatic cutover
Buyer-specific implementation, deployment, or ongoing support as a service

Integration notes

Run the detector before editing host code; never auto-migrate on heuristic matches alone.
Bind OAuth state to an authenticated host account before redirecting sellers to Walmart.
Persist refresh tokens only through the encrypted store boundary; cache access tokens in memory.
Cut over one seller at a time after Token Detail scope verification and operator approval.
If your managed provider already migrated or you do not control connector authentication, this kit is not required.
AI-ready documentation and agent instructions included.

How it works

Complete checkout or accept the terms and download a free kit
Download the source ZIP
Review the docs, examples, and AI Integration Pack
Adapt the kit into your project, application, or store with AI assistance or technical help as needed

Review before production

This product is provided as reusable source code to accelerate development. It is not supplied as a finished production system and should not be deployed to production without review, testing and adaptation to your specific application. You are responsible for validating the code, security, compatibility, data handling and business logic before production deployment.

Silver Vault Project is independent and is not affiliated with or endorsed by Shopify Inc. or Walmart Inc. Shopify is a trademark of Shopify Inc. Walmart and Walmart Marketplace are trademarks of Walmart Inc.

Support

Product support covers defects in the supplied code and documentation questions. Custom integration and application debugging are available separately. [email protected]

Walmart Delegated Access to OAuth 2.0 Migration Kit for Shopify Integrations specification