Yes, it is possible to send an amount to a Square Terminal using the Terminal API. The Terminal API allows you to connect any type of application running on any device to the Square Terminal for payment processing. You can initiate a payment by creating a checkout request that specifies the amount to be charged. This request is sent to the Square Terminal, which then processes the payment. To get started, you would need to integrate the Terminal API with your application and use the Devices API to manage the Square Terminals connected to your application.
This answer was reviewed by @Bryan-Square.