---
title: "SMS billing"
description: "What your workspace pays for SMS every month. Buying a carrier resource is an SMS quote, then its confirm."
url: https://www.unitpost.com/docs/api/sms-billing
section: API reference
updated: 2026-10-13
---
# SMS billing

## SMS billing

> What your workspace pays for SMS every month. Buying a carrier resource is an SMS quote, then its confirm.

Full schemas: [OpenAPI 3.1](https://www.unitpost.com/api/v1/openapi.json). HTML reference: https://www.unitpost.com/docs/sms#sms-billing.

## Operations

### `GET /api/v1/sms/billing/resources`

List recurring SMS charges

What your workspace pays for SMS every month: each number and 10DLC campaign, its monthly price, status, next charge and, for a past-due number, the date it is released. Buying a carrier resource is an SMS quote, then its confirm. Requires the `sms:read` capability.

Reference: https://www.unitpost.com/docs/sms/get-sms-billing-resources ([Markdown](https://www.unitpost.com/docs/sms/get-sms-billing-resources.md))

## Related

- [SMS quotes](https://www.unitpost.com/docs/api/sms-quotes): Buy carrier resources by API: quote (`sms:manage`, nothing charged), show the person the price, then confirm with the quote's single-use token and an `Idempotency-Key` (`sms:purchase`, which no key preset includes). API purchases count against a monthly cap the workspace owner sets in the dashboard; with none set they are refused. A toll-free number, releasing a number and identity documents stay in the dashboard.
- [SMS campaigns](https://www.unitpost.com/docs/api/sms-campaigns): Marketing SMS to a segment from a published SMS template. Draft → send now or schedule, with pause, resume, cancel and reschedule. Sends run the same checks as the dashboard; consent and recipient-local quiet hours apply per recipient. Paid plans only, like every SMS send.
- [SMS topics](https://www.unitpost.com/docs/api/sms-topics): SMS subscription categories recipients can opt out of, independent from email topics. STOP still opts a number out of every SMS.