# POST /v1/projects/{}/availableNumbers/{}:rent is deprecated

Sinch Numbers API deprecated POST /v1/projects/{id}/availableNumbers/{id}:rent without giving a shutdown date yet.

The POST /v1/projects/{id}/availableNumbers/{id}:rent endpoint has been deprecated without a shutdown date and will eventually fail. Sinch Numbers API notes that it is only for US LOCAL numbers and remains available for existing integrations, while new integrations must avoid it.

## What to use instead

Buy numbers using the Number Order API by calling POST /v1/projects/{projectId}/numberOrders:createNumberOrder followed by POST /v1/projects/{projectId}/numberOrders/{numberOrderId}/submit.

- API: Sinch Numbers API (numbers.api.sinch.com)
- Kind: Endpoint removal
- Takes effect: no date given yet
- Calls after that day: fail
- Calls it hits: `POST /v1/projects/{id}/availableNumbers/{id}:rent`
- Source: [Announcement](https://developers.sinch.com/docs/numbers/api-reference/numbers)
- Verified: November 6, 2026, against Sinch Numbers API's own pages
- Page: https://www.okapi.bot/providers/sinch-numbers-api/breaking-changes/post-v1-projects-availablenumbers-rent-is-deprecated/

## Sinch Numbers API's words

> are deprecated and only support US LOCAL numbers. They remain available for existing integrations, but new integrations should use the Number Order API.

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent