{"name":"whois","description":"Looks up a domain's WHOIS/RDAP registration record: age, expiry, registrar, and nameservers. Short alias of whois-lookup; queries the IANA-mandated RDAP endpoint and returns registered_date, age_days, expiration_date, days_until_expiry, last_changed, registrar (name + IANA id), contacts, nameservers, dnssec_signed, EPP statuses, and risk flags, optionally appending a crt.sh certificate-transparency summary. Use it for domain age and domain expiry checks, as a registrar finder, nameserver lookup, DNSSEC check, TLD registration record, or brand-protection triage.","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."},"include_certificates":{"type":"boolean","description":"If true, attaches a crt.sh certificate-transparency summary. 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","age_days":11223,"days_until_expiry":98,"registrar":{"name":"RESERVED-Internet Assigned Numbers Authority","iana_id":"376"},"nameservers":["A.IANA-SERVERS.NET","B.IANA-SERVERS.NET"],"dnssec_signed":true,"statuses":["client delete prohibited"],"flags":[],"cert_summary":null},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}