Authentication ===================== With your secret key, paystackease can authenticate your API calls in the `Authorization header` of your request. .. attention:: The secret key should be in your environment variable. **Secret Keys and Public Secret Keys** For Paystack integrations, the choice between secret key (ideal for secure server-side processing with PaystackEase authentication) and public key (suitable for front-end Paystack Inline integrations but not compatible with PaystackEase) depends on your application's processing needs.