# API references

Complete REST API documentation for SMS Gateway service.
Before making requests, ensure you have configured [authentication](/products/sms/enterprise-documentation/developer-documentation/authentication).

## Environments & Endpoints

| Environment | Description | Base URL | OpenAPI Spec | Swagger UI |
|  --- | --- | --- | --- | --- |
| PROD | Production | [sms.namirialtsp.com](https://sms.namirialtsp.com/api/Services/) | [JSON](https://sms.namirialtsp.com/openapi?format=JSON) | [UI](https://sms.namirialtsp.com/swagger-ui/index.html) |
| PREPROD | Pre-release staging | [sms.preprod.namirialtsp.com](https://sms.preprod.namirialtsp.com/api/Services/) | [JSON](https://sms.preprod.namirialtsp.com/openapi?format=JSON) | [UI](https://sms.preprod.namirialtsp.com/swagger-ui/index.html) |
| TEST | Development & Test | [sms.test.namirialtsp.com](https://sms.test.namirialtsp.com/api/Services/) | [JSON](https://sms.test.namirialtsp.com/openapi?format=JSON) | [UI](https://sms.test.namirialtsp.com/swagger-ui/index.html) |


## Available APIs

| API | Description |
|  --- | --- |
| [Send message](/products/sms/enterprise-documentation/developer-documentation/api-references/send) | Send SMS messages to a destination number |
| [Check service status](/products/sms/enterprise-documentation/developer-documentation/api-references/services-checkservicestatus) | Check the operational status of the SMS Gateway service |