# \SmsApi
All URIs are relative to *https://zernio.com/api*
[**send_sms**](SmsApi.md#send_sms) | **POST** /v1/sms/messages | Send an SMS or MMS
## send_sms
> models::SendSms200Response send_sms(send_sms_request)
Send an SMS or MMS
Send a text (SMS) or media (MMS) message from one of your SMS-enabled numbers. Provide `text`, `mediaUrls`, or both. Supply an `Idempotency-Key` header to make retries safe (a repeated key replays the original result instead of sending again). US numbers must have an approved carrier registration before they can deliver.
### Parameters
**send_sms_request** | [**SendSmsRequest**](SendSmsRequest.md) | | [required] |
### Return type
[**models::SendSms200Response**](sendSms_200_response.md)
### Authorization
[bearerAuth](../README.md#bearerAuth)
### HTTP request headers
- **Content-Type**: application/json
- **Accept**: application/json
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