---
title: "Changes to Calculate SMS segments"
method: POST
path: "/text/segments"
---

# Changes to Calculate SMS segments

`POST /text/segments`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 2 revisions.

- **2026-11-03** `95fad0d2f369`: 1 breaking, 2 info

## Changes

- **2026-11-03** `95fad0d2f369`: 1 breaking, 2 info
  - the response property `error` became optional for the status `429`
  - added the new optional `header` request parameter `x-cw-signature`
  - added the new optional `header` request parameter `x-cw-timestamp`

---

[Operation](https://skmtc.dev/collectwise/apis/collectwise-api/docs/text/segments/post.md) - [API](https://skmtc.dev/collectwise/apis/collectwise-api.md) - [Page](https://skmtc.dev/collectwise/apis/collectwise-api/changes/text/segments/post)