Rest api supported in two environment. Live endpoint for production use and sandbox for testing purpose.
Sandbox Environment
Endpoint : https://vivaropay.live/api/v1.0.0-beta/payment/sandbox
Live Environment
Endpoint : https://vivaropay.live/api/v1.0.0-beta/payment/secure
Test as much as you like on Sandbox, no money will be charged. If you test on live environment, money will be charged from your organization wallet based on transaction type.