The Missing Key to x402
x402 is the right base layer for machine-native payments. It’s here, and as of 04/02, it’s part of the Linux Foundation. But it ships without the one thing every production system needs: a key and session story. That’s the layer to build. What is x402? x402 is an open protocol that builds on top of a more than twenty year old IETF standard: HTTP’s 402 Payment Required status code. x402 is good because it is boring in the right way. It is simple, neutral, and very easy to explain. ...