Mentioned in the evidence
- Shopify offline access tokens
- Global Catalog REST API
- Ajax API carts/update webhooks
- GraphQL Admin API
- POS UI extensions','Customer Account API
Official sources
- Shopify developer changelog (changelog) ↗
Cart mutations reject unconfirmed writes in POS UI extensions 2026-10
- Shopify developer changelog (changelog) ↗
Migrate to expiring offline access tokens before January 1, 2027
- Shopify developer changelog (changelog) ↗
Cart updates that result in no changes to the cart no longer trigger carts/update webhooks
- Shopify developer changelog (changelog) ↗
POS UI extensions now return percentage values for percentage discounts
- Shopify developer changelog (changelog) ↗
Global Catalog REST API stops serving traffic on November 2, 2026
This is a global change, verified against Shopify’s own sources. It is not an assessment of your systems or your impact.