Shopify API 2026-10: Breaking Changes to Check Before You Upgrade
Shopify API 2026-10 upgrade checklist: removed fields, the segment query change, tax recalculation, metafield filter errors and the new features worth adopting.
Practical guides on Liquid, metafields, Functions and APIs for developers and store builders.
Each topic is a cluster of guides that build on each other.
Hands-on guides to Shopify Functions and the Admin GraphQL API, from first build to production limits.
Shopify and AI: Sidekick, MCP, UCP and agentic commerce.
Shopify Liquid techniques, theme performance and Core Web Vitals fixes that hold up on real stores.
How to model custom data in Shopify with metafields and metaobjects, and how to render it in Liquid and the APIs.
Theme app extensions, web pixels, app embeds and the platform changes that affect apps.
GA4, Customer Events, Meta CAPI and server-side tracking for Shopify stores.
Step-by-step tutorials and troubleshooting, newest first.
Shopify API 2026-10 upgrade checklist: removed fields, the segment query change, tax recalculation, metafield filter errors and the new features worth adopting.
Shopify Polaris 2.0 release candidate for app home: the new script URL, React Router setup, what can break, rc.1 changes and how to test the new admin design.
The Shopify Global Catalog REST API stops on November 2, 2026. Map search, lookup and bulk lookup to the three Global Catalog MCP tools and update your requests.
Add owner_type to every metafield declaration in Shopify checkout and customer account UI extensions: what changes in 2026-10 and what is required from 2027-01.
Migrate Shopify checkout UI extensions to Preact and Polaris web components: API versions, metafield changes, the 64KB bundle limit and the pitfalls Shopify hit.
Migrate Shopify webhooks to Events with API 2026-10: map fields, pick triggers, stay under the 100-point query limit and know what to keep.
Shopify variant barcodes: the new barcodes connection in API 2026-10, how to read and write up to 20 typed barcodes, and how to avoid silent truncation.
We pick topics from questions developers actually ask, then answer them with working code.
Shopify changes often, so each guide points to the source you should check for current details.
When an API version changes something, we revise the guide and show the updated date.