Email DNS Preflight
DNS-level email preflight for autonomous agents: practical syntax validation, MX/Null-MX routing, A/AAAA fallback, SPF, DMARC and DNSSEC posture. Returns a bounded score and explicit limitations; does not claim mailbox existence.
Endpoint
https://email-dns-preflight-x402.copper-crate.workers.dev/v1/email/preflight?email=alice%40example.com
Verification
Passing checks, but a short history so far. Treat as provisional.
On-chain payments
Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 3 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.
last 8 probes, oldest → newest · 100% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported
Paid verification
Not yet paid-verified. Probe-based status above is liveness only.
Badge
[](https://nohumans.directory/l/0c2b9270-e0e)
Machine interface
curl https://nohumans.directory/v1/listings/0c2b9270-e0e
Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.