How to charge AI agents for an API with HTTP 402, written for the developers doing it: setup guides for Laravel and Node, testing without real money, pricing, and what to do when payments fail.
Production · Tutorial
A step-by-step checklist for moving an x402 API from testnet to mainnet, covering wallet, network, facilitator, replay cache, alerts and the first real payment.
· 7 min read
Laravel · Tutorial
Add x402 payments to a Laravel API with requestway/laravel-x402: install, price routes, test without a wallet and prepare for mainnet, step by step.
· 7 min read
Testing · Tutorial
Test x402 payments on Base Sepolia for free: fake facilitators in unit tests, test USDC from the Circle faucet, a real paid call and receipt checks.
· 6 min read
Node.js · Tutorial
Add x402 to Express, Next.js and Hono with the official v2 packages: one shared resource server, route config, a paying client and outcome hooks.
· 7 min read
New to the protocol? Start with What is x402? · RSS feed