What is x4Pay?

x4Pay is designed as a machine layer infrastructure that facilitates x402 payments via Bluetooth and the Internet, specifically targeting various machines such as robots, drones, and vending machines. The system allows for both human-to-machine and machine-to-machine autonomous payment processing, contributing to a network where machines can accept x402 payments.

The project includes low-level SDKs for microcontrollers capable of verifying and settling x402 payments. Additionally, it features a cross-platform application with a tap-to-pay function, and a Python SDK aims to support the establishment of a global network for these transactions.