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Developer Guides for Shopify Systems

Implementation-heavy guides for engineers working on architecture, storefront performance, extensibility, and technical execution quality.

AudienceDevelopers and technical leads responsible for theme performance, architecture, and implementation quality.
Results5 of 28 resources

Showing filtered results in session tokens.

Calling a Rails API from a Shopify customer account extension cover image
Developer guide
Guides
14 min readUpdated March 12, 2026

Calling a Rails API from a Shopify customer account extension

A practical guide to calling Rails endpoints from a Shopify Customer Account UI Extension, including session-token verification, endpoint design, and the requests that should not go through your backend at all.

guidesShopify developerCustomer Account UI Extensions
Checkout UI Extensions with a custom backend architecture cover image
Developer guide
Guides
15 min readUpdated March 12, 2026

Checkout UI Extensions with a custom backend architecture

A practical backend architecture guide for Shopify Checkout UI Extensions, covering when to call your own backend, how to keep the extension thin, and where teams overbuild the server side.

guidesShopify developerCheckout UI Extensions
Session tokens for Shopify UI extensions explained cover image
Developer guide
Guides
16 min readUpdated March 12, 2026

Session tokens for Shopify UI extensions explained

A guide to session tokens in Shopify UI extensions, with the differences between embedded app auth, checkout extensions, and customer account extensions explained in architecture terms that matter in production.

guidesShopify developersession tokens
Shopify Customer Account UI Extensions with a Rails backend cover image
Developer guide
Guides
15 min readUpdated March 12, 2026

Shopify Customer Account UI Extensions with a Rails backend

A backend architecture guide for Shopify Customer Account UI Extensions using Rails for app logic, persistence, and API orchestration without turning the extension into a fragile mini-app.

guidesShopify developerCustomer Account UI Extensions
Shopify session tokens in Rails cover image
Developer guide
Guides
15 min readUpdated March 12, 2026

Shopify session tokens in Rails

A Rails-focused guide to Shopify session tokens for embedded apps, covering the Shopify App gem, token exchange, frontend request flow, and the mistakes that still break production auth.

guidesShopify developersession tokens