MARKET MONITOR / CATALOGUE Services 157,914 MCP listed 48,837 x402 109,203 Rails Base / Solana / Polygon / Arbitrum Imported 2026-11-15 · 3 sources
Provider

x402-qr-api.vercel.app

x402-qr-api.vercel.app · 1 listed service · provider site

Validate x402 REST usage

Validate an email address: format check plus a live MX record lookup on its domain

x402-qr-api.vercel.app Comms & Messaging 1 calls / 30d checked 2026-11-06
0.002 USDC per call per call

Provider identity is derived from the domain or repository in the source record. If two vendors share a host, they appear together here — that is a limitation of the data, not a statement about ownership.