{"name":"email-domain-age-check","description":"Checks whether a sender or lead email domain is established, expiring, DNSSEC-signed, or newly registered. Same RDAP backend as whois-lookup. Use it as an email domain age check API, sender-domain diligence tool, or cold-email risk screen.","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":"notion.so","include_certificates":false},"output_example":{"domain":"notion.so","age_days":2400,"days_until_expiry":215,"flags":[]},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}