This document describes how to integrate and use the x402 protocol through the MathPay Facilitator service. MathPay Facilitator URL : https://facilitator.mathpay.org 1. Register a MathPay Account Please register and log in to your MathPay account : https://app.mathpay.org Guide: https://blog.mathwallet.org/?p=4854 2. Complete KYC and Obtain Your API Key After completing KYC, you can view and manage your MathPay API […]