Blog
Thoughts on x402 reliability, on-chain monitoring, and building for Base mainnet.
We built payment readiness verification for x402 services and hit an HTTP 500 that changed how we think about the whole monitoring stack. Here is what we found, why it matters for anyone building on x402, and what we have documented in the open spec.
A ping check tells you the server responded. It tells you nothing about whether your users can actually pay and receive value from your x402 API.
An x402 API can look operational while silently failing your users at any of seven distinct stages. Here is what each failure looks like, why ping-based monitoring misses it, and how to catch it before a user does.