overlay: 1.0.0 info: title: API Evangelist enhancements for the Shopify Ajax API version: 1.1.0 extends: ../openapi/_original/shopify-ajax-api-openapi.yml x-provenance: generated: '2026-08-27' method: generated source: https://shopify.dev/docs/api/usage/versioning.md and https://shopify.dev/docs/api/ajax (fetched 2026-08-27) actions: - target: $.info description: Record that this surface is unversioned and carries no deprecation window. update: x-api-evangelist: versioned: false versioning_note: >- The Ajax API is explicitly listed as UNVERSIONED in Shopify's versioning reference. It may change at any time with no deprecation window and no support commitment. The 2025-01 stamped on the captured spec is the capture date, not an API version. scope: storefront, same-origin, theme-only auth: none (session cookie); not callable cross-origin from a server source: https://shopify.dev/docs/api/usage/versioning - target: $.info description: Point at the modern equivalents of this surface. update: x-superseded-by: - name: Storefront API (GraphQL) url: https://shopify.dev/docs/api/storefront sdl: ../graphql/shopify-storefront-api.graphql - name: Storefront MCP / UCP cart tools url: https://shopify.dev/docs/apps/build/storefront-mcp note: >- get_cart and update_cart on the Storefront MCP server subsume getCart, addToCart, updateCart, changeCartItem and clearCart from this spec. See ../mcp/shopify-tool-crosswalk.yml. - target: $.info description: Attach the derived artifacts. update: x-artifacts: conventions: ../conventions/shopify-conventions.yml tool_crosswalk: ../mcp/shopify-tool-crosswalk.yml