AVT x402 Data Services

A human read this entry. That is the one thing true of everything on the list. Beyond that: the endpoint answered an x402 request when we knocked it, on the date shown. That date is the claim — not a word, a date. None of it is a delivery test. We have not paid for this and graded what came back, so read it as "we checked what is stated above," never as "this is worth the money."

16 pay-per-call data and validation APIs: field-verified AV/IT device-integration knowledge base (curated by working systems integrators), IBAN / EU-VAT (VIES) / email / phone / card / GTIN validation, DNS and RDAP domain lookup, timezone and ECB currency conversion. $0.002–$0.03 USDC on Base; free catalog, llms.txt, and OpenAPI. ([llms.txt](https://api.aventtech.com/llms.txt)) ([MCP server](https://github.com/ttsempelis/avt-x402-mcp))