$0.001 USDCBase mainnetx402 v2
Low-cost infrastructure intelligence for autonomous agents, CRM hygiene, sender vetting, DNS diagnostics and anti-phishing preflight. No signup and no API key.
GET /v1/email/preflight?email=alice@example.com — email syntax, role/free-provider classification, safe typo hints, MX routing, SPF, DMARC, common-selector DKIM heuristic, MTA-STS, TLS-RPT, DNSSEC and domain RDAP intelligence.POST /v1/email/preflight — same capability with JSON body.GET /v1/domain/preflight?domain=example.com — A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, mail-security posture, DNSSEC and RDAP age/expiry.GET /v1/domain/rdap?domain=example.com — focused WHOIS-successor lookup: registration age, creation/expiration dates, registrar, statuses, nameservers and DNSSEC delegation.Useful for email validation, lead-list hygiene, signup checks, domain research, DNS record lookup, MX/TXT inspection, SPF and DMARC checks, domain-age risk signals and infrastructure verification.
Mailbox existence and inbox delivery are not tested. DKIM selectors are publisher-defined, so the DKIM signal is explicitly heuristic and checks common selectors only. RDAP 404 responses are not treated as ownership proof.