generated: '2026-10-08'
method: searched
source: https://developers.sinch.com/docs/conversation/release-notes.md (2026-12-16 upcoming removal of v1alpha/v1beta Batch
  endpoints); https://developers.sinch.com/docs/numbers/api-reference/numbers.md (rentNumber/rentAny deprecation wording);
  https://developers.sinch.com/docs/voice-2.0/migration.md (Voice API v1 -> v2); https://status.sinch.com/ (dossier-probed
  200); deprecated flags in the published contracts
name: Sinch API lifecycle
versioning:
  scheme: URL path versions per product (/v1, /v2, /v3; Voice API v1 at calling.api.sinch.com and Voice API v2 at voice.api.sinch.com
    are separate contracts); Template Management is v2; Fax is v3; the Conversation Batch API moved from v1alpha/v1beta to
    v1
  docs: https://developers.sinch.com/docs/voice-2.0/migration
  sdk_migration: https://developers.sinch.com/docs/numbers/sdk/java/1.0/migration-guides/migration-to-versioned
deprecation:
  policy_text: This endpoint is deprecated. It remains available for existing integrations, but new integrations should use
    the number orders endpoints
  policy_url: https://developers.sinch.com/docs/numbers/api-reference/numbers
  announced_removals:
  - what: Conversation Batch API v1alpha and v1beta endpoints
    date: '2026-12-16'
    text: The v1alpha and v1beta Batch API endpoints have been deprecated. Beginning December 16, 2026, they will no longer
      be accessible.
    url: https://developers.sinch.com/docs/conversation/release-notes
  headers: No Sunset or Deprecation response headers are documented (searched the reference pages and the contracts)
  deprecated_operations:
  - api: Numbers API
    operationId: NumberService_RentNumber
    path: POST /v1/projects/{projectId}/availableNumbers/{phoneNumber}:rent
  - api: Numbers API
    operationId: NumberService_RentAnyNumber
    path: POST /v1/projects/{projectId}/availableNumbers:rentAny
  - api: Fax API
    operationId: getFaxFileByIdDeprecated
    path: GET /v3/projects/{projectId}/faxes/{id}/file.{fileFormat}
  - api: Provisioning API
    operationId: WhatsappEmbeddedSignupHelperController_createLongLivedAccessToken_v1
    path: POST /v1/projects/{projectId}/whatsapp/longLivedAccessToken
  - api: Provisioning API
    operationId: WhatsappEmbeddedSignupHelperController_listWabaDetailsForToken_v1
    path: POST /v1/projects/{projectId}/whatsapp/wabaDetails
  - api: Voice API
    operationId: Calling_QueryNumber
    path: GET /v1/calling/query/number/{number}
status_page: https://status.sinch.com/
sla: No public API SLA page found on sinch.com or the developer portal (searched legal index at https://sinch.com/legal/ and
  llms.txt)
release_notes: changelog/sinch-changelog.yml