Tutorials
Tutorials
Step-by-step integration guides — accept USDC, build checkout flows and verify webhooks.
Tutorials
Tutorials
What Is x402? The HTTP Protocol for AI Agent Payments
x402 turns HTTP 402 Payment Required from a placeholder into a real payment protocol. An AI agent hits a paywall, reads the payment terms from the response header, signs a USDC transfer, and retries — all without human intervention.
October 12, 2026 · 8 min read
Tutorials
Tutorials
Accept USDC Payments in Next.js — A 5-Minute Guide
Add stablecoin checkout to a Next.js app in under 50 lines of code. Create a payment, redirect to a hosted checkout page, and verify the webhook — with copy-paste TypeScript.
October 12, 2026 · 5 min read