# Authentication

To use SMS Gateway API methods, you must authenticate using:

- **HTTP Basic Authentication** using credentials provided by the Namirial support.


All API requests require HTTP Basic Authentication using your SMS account credentials:


```bash
curl -X POST https://sms.namirialtsp.com/api/Services/send \
  -u username:password \
  -H "Content-Type: application/json" \
  -d '{"destination": "+1234567890", "text": "Hello World"}'
```

## Troubleshooting Authentication Issues

Common authentication errors and solutions:

- **Invalid Credentials** - Verify that you are using the correct credentials for the target environment
- **Expired Credentials** - Contact Namirial support to renew expired credentials
- **Environment Mismatch** - Ensure you are using test credentials with test endpoints and production credentials with production endpoints


For the full list of the environments, see [API References](/products/sms/enterprise-documentation/developer-documentation/api-references).

## How to get API Credentials

Submit a request to the Namirial support portal.