Storefront MCP and UCP Cart MCP
Agentic storefront integrations using Storefront MCP cart tools
- Action
- Move get_cart and update_cart to the UCP endpoint; add required meta fields; use full-state PUT semantics for update_cart
- Effective
- Aug 31, 2026
Shopify API changelog monitor.
Follow deprecations, breaking changes, version retirements, and platform requirements without rereading every announcement. Each record names the affected apps, the migration action, the deadline precision, and the official Shopify evidence.
6verified open records
4high-priority actions
4exact deadlines
Aug 11, 2026last source check
01 / VERIFIED QUEUE
Current Shopify API changes
Facts come from first-party Shopify sources. Planning interpretation is labeled separately and never presented as Shopify instruction.
Admin GraphQL API and Admin REST API
All public apps calling the Admin API
- Action
- Migrate non-expiring offline access tokens to expiring tokens and implement refresh-token rotation
- Effective
- Jan 1, 2027
Versioned Shopify APIs
Apps using Shopify API version 2025-10
- Action
- Upgrade requests and webhooks to a supported API version and confirm the X-Shopify-API-Version response header
- Effective
- Oct 16, 2026
Built for Shopify
Returns and exchanges apps and subscription apps with buyer-facing self-service
- Action
- Use the Customer Account API as the primary authentication method for affected buyer flows
- Effective
- Dec 1, 2026
Checkout UI and Polaris
Checkout UI extensions using useBuyerJourneyIntercept
- Action
- Migrate enforceable rules to cart and checkout validation Functions; move discount rejection logic to the Discount Function API
- Effective
- Not published
Admin GraphQL API
Apps using cumulative marketing engagement metrics
- Action
- Stop depending on isCumulative=true and plan non-cumulative engagement reporting
- Effective
- Not published
Changes that can create engineering work.
Patchquarter focuses on deprecations, breaking changes, hard requirements, API version retirement, and operational changes with an identifiable app impact. General product announcements stay out of the action queue.
01
Official evidence. Every record links to Shopify's changelog, versioning documentation, or another first-party source.
02
Bounded interpretation. Affected apps and required actions are explicit; uncertainty remains visible.
03
App-specific delivery. Agency Lite compares each verified record with the surfaces declared for up to 10 apps.
Shopify API deprecations
See only deprecation records and the operating checklist for triage.
VERSIONING—GUIDEShopify API versioning
Understand quarterly versions, support windows, and fall-forward behavior.