generated: '2026-08-04'
method: probed
source: >-
  publicApiVersions query against https://coldsnap.com/api/2026-07/graphql.json;
  https://coldsnap.com/.well-known/ucp; response headers on https://coldsnap.com/api/mcp
scope: platform
note: >-
  ColdSnap publishes no API changelog of its own. What it does serve is a live, queryable
  version train — the store answers a publicApiVersions query naming exactly which dated
  API versions it will accept — and RFC 8594 Deprecation/Sunset headers on its MCP
  endpoint. That version train is the changelog a consumer of this API actually integrates
  against, so it is captured here as observed on the store's own hosts, with the platform
  changelog recorded as the narrative companion. Nothing below is a ColdSnap release note.
scheme: dated-quarterly
current_version: '2026-07'
platform_changelog: https://shopify.dev/changelog
versioning_policy: https://shopify.dev/docs/api/usage/versioning
entries:
- version: '2026-10'
  date: '2026-10-01'
  status: release-candidate
  supported: false
  surface: storefront-graphql
  highlights:
  - Announced by the store as a release candidate; not yet accepted for production calls.
  breaking: unknown
- version: '2026-07'
  date: '2026-07-01'
  status: current
  supported: true
  surface: storefront-graphql
  highlights:
  - The version ColdSnap's own baseURL pins (/api/2026-07/graphql.json).
  - 428 types, 35 root query fields, 41 mutations as introspected on 2026-08-02.
  - 51 schema members carry @deprecated, including the four *ByHandle root query fields.
- version: '2026-04'
  date: '2026-04-01'
  status: supported
  supported: true
  surface: storefront-graphql
- version: '2026-01'
  date: '2026-01-01'
  status: supported
  supported: true
  surface: storefront-graphql
- version: '2025-10'
  date: '2025-10-01'
  status: supported
  supported: true
  surface: storefront-graphql
  note: Oldest version the store still accepts; ages out on the quarterly train.
- version: '2026-04-08'
  date: '2026-04-08'
  status: current
  surface: ucp
  highlights:
  - Merchant profile at /.well-known/ucp declares this the current UCP protocol version.
  - Adds dev.shopify.catalog extension over catalog.search and catalog.lookup.
  - Shop Pay payment handler at version 2026-04-08.
- version: '2026-01-23'
  date: '2026-01-23'
  status: supported
  surface: ucp
- version: unstable
  date: '2026-06-24'
  status: deprecated
  surface: storefront-mcp
  sunset: '2026-08-31'
  highlights:
  - >-
    The MCP endpoint declares x-shopify-mcp-api-version: unstable and returns
    `deprecation: @1782259200` (2026-06-24) plus `sunset: Mon, 31 Aug 2026 00:00:00 GMT`.
    The only MCP version this store serves is already scheduled for removal.
  breaking: true
gaps:
- ColdSnap publishes no product or API release notes on its own domain.
- The store's blog (78 articles) is marketing and customer-story content, not a changelog.
- No RSS or JSON feed of API changes is served from coldsnap.com.
x-evidence:
  fetched: '2026-08-04'
  probes:
  - {url: 'https://coldsnap.com/api/2026-07/graphql.json', query: publicApiVersions, http_status: 200}
  - {url: 'https://coldsnap.com/.well-known/ucp', http_status: 200}
  - {url: 'https://coldsnap.com/api/mcp', http_status: 200, headers: [deprecation, sunset]}
  - {url: 'https://shopify.dev/changelog', http_status: 200}