Authentication

Learn how to authenticate your requests to the SMS API.

The SMS API uses token-based authentication to secure API requests. All API requests must include an authentication token in the header.

API Keys

Obtain API keys from us contact us for generate API keys.

Access Tokens

Generate temporary access tokens using your API keys.

Security

Follow best practices to keep your API credentials secure.

Using Access Tokens

Include the access token in the Authorization header of all API requests:

Authorization: Bearer YOUR_ACCESS_TOKEN

Example Request with Authentication

curl -X GET "https://sms.747sandbox.com/api/v1/message/custom" \
  -H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..." \
  -H "Content-Type: application/json"

Security Best Practices

Never share your API keys or access tokens
Store API keys and tokens securely, never in client-side code
Use environment variables to store API keys in your applications
Implement proper error handling for authentication failures
Monitor API usage for suspicious activity

Warning

If you suspect your API keys have been compromised, contact us for regenerate them immediately.

Error Handling

Common authentication errors you might encounter:

Status Code	Error	Description
401	Unauthorized	Invalid or missing authentication token
403	Forbidden	Valid token but insufficient permissions
400	Bad Request	Invalid API key or secret format