generated: '2026-07-20'
method: searched
source:
- https://r2-api-docs.readme.io/changelog
- openapi/r2-openapi.json
versioning:
  scheme: uri-path
  current: v2
  api_docs_version: 1.2.1
  docs: https://r2-api-docs.readme.io/
deprecation:
  policy_url: null
  sunset_header: false
  note: >-
    R2 has removed endpoints across versions (v1.2.0 dropped the sync POST
    transactions endpoint, the transactions/collections GET endpoints, and the
    standalone Collections endpoint) but publishes no formal deprecation policy
    or RFC 8594 Sunset/Deprecation header support.
  observed_removals:
  - POST transactions (sync) — removed in v1.2.0
  - GET transactions — removed in v1.2.0
  - GET collections — removed in v1.2.0
  - Collections endpoint — removed in v1.2.0 (replaced by payments/collection-kind model)
changelog: https://r2-api-docs.readme.io/changelog
status_page: null
sla:
  url: null
  callback_retry_window: 6 attempts over ~30h; callback delivery timeout 30s