{"name":"whois-lookup","description":"Looks up WHOIS registration data for a domain via the IANA-mandated RDAP endpoint for its TLD. Returns registration date, age in days, expiration date, days-until-expiry, last-changed and transfer dates, registrar (name + IANA id), registrant/admin/tech contacts, nameservers, DNSSEC-signed flag, EPP status codes, and risk flags (newly-registered, expiring-soon, locked). Optionally appends a crt.sh certificate-transparency summary. Use it as a whois API, RDAP domain lookup, domain age check, registrar finder, expiration checker, nameserver inspector, DNSSEC verifier, domain transfer history source, TLD registration record, or brand-protection + phishing triage tool.","price":"$0.02","method":"POST","input_schema":{"properties":{"domain":{"type":"string","description":"Apex domain to look up (e.g. 'example.com'). Subdomains are stripped to the registrable domain before query."},"include_certificates":{"type":"boolean","description":"If true, fetch a crt.sh certificate-transparency summary (issuer counts, first/last seen, total certs). Default false."}},"required":["domain"]},"input_example":{"domain":"example.com"},"output_example":{"domain":"example.com","rdap_server":"https://rdap.verisign.com/com/v1/","registered_date":"1995-08-14T04:00:00Z","expiration_date":"2026-08-13T04:00:00Z","last_changed":"2026-01-16T18:26:50Z","transfer_date":null,"age_days":11223,"days_until_expiry":98,"registrar":{"name":"RESERVED-Internet Assigned Numbers Authority","iana_id":"376"},"contacts":{},"nameservers":["A.IANA-SERVERS.NET","B.IANA-SERVERS.NET"],"dnssec_signed":true,"statuses":["client delete prohibited","client transfer prohibited"],"flags":[],"cert_summary":null},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}