Authentication

All requests to the eSimply API must be authenticated using your assigned API key. We utilize standard header-based authentication

How It Works

Every API request requires the X-API-Key header containing your unique API key.

This key identifies your partner account and authorizes your requests to access eSIM packages and manage orders.

Include the header in all your API requests:

X-API-Key: YOUR_API_KEY

Enterprise Security Best Practices

Backend-to-Backend Only: Your API key grants administrative access to spend your partner balance. Never expose this key in client-side code (mobile apps, web browsers, or public GitHub repositories). All requests must be routed through your secure backend servers.

Key Rotation: If you suspect your key has been compromised, contact our support team immediately to revoke it and issue a new one.