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.
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.
What an x402 facilitator does at each step of a payment, what it can never do with your money, and how to choose one for testnet, mainnet or self-hosting.