x402scan-hnqp3auxm-merit-systems.vercel.app is a Vercel-hosted API that discovers and registers x402 resources for a given origin by checking .well-known/x402 and DNS TXT records. It exposes a single endpoint (/api/data/registry/register-origin) to automate onboarding, indexing, and monitoring of x402-enabled domains; network: base, price: $0.01 per call.