{"uid":"cap_dlt1mSybdVRTBgfiMiKLC","slug":"cited-brief-domain-check-650793e6","name":"Cited Brief Domain Check","description":"Pay-per-call web research tools for AI agents, paid in USDC over x402.","url":"https://cited-brief.cited-brief.workers.dev/domain-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"domain":{"type":"string","description":"Domain name or URL, for example example.com"}}},"responseSchema":{"type":"json","example":{"dns":{"a":["93.184.216.34"],"mx":[],"ns":["a.iana-servers.net"],"spf":false,"aaaa":[],"dmarc":false,"nxdomain":false,"receives_email":false},"flags":[],"domain":"example.com","source":"rdap","status":["client delete prohibited"],"created":"1995-08-14T04:00:00Z","expires":"2027-08-13T04:00:00Z","age_days":11000,"registrar":"Example Registrar, Inc.","checked_at":"2026-10-12T21:00:00.000Z","registered":true,"nameservers":["a.iana-servers.net"],"expires_in_days":300,"registered_domain":"example.com"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RI1XuS0huANxaV7v2kZOJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs a comprehensive WHOIS/RDAP and DNS lookup for a given domain, returning registration status, DNS records, expiry, and email infrastructure details.","exampleAgentPrompt":"Can you check the domain status for acmecorp.io — I want to know if it's registered, when it expires, and whether it has proper email records like SPF and DMARC set up?","exampleUseCases":[{"title":"Pre-outreach email deliverability check","prompt":"Before we send that campaign to leads at brightleaf.com, can you verify their domain has MX records and SPF/DMARC configured so I know our emails won't bounce?"},{"title":"Domain expiry monitoring for portfolio","prompt":"Check whether startup-tracker.net is still registered and how many days until it expires — I want to know if someone let it lapse."},{"title":"Competitive domain intelligence","prompt":"Look up the domain info for rivalapp.com — I want to know how old it is, who their registrar is, and what nameservers they're using."}],"resultDescription":"Returns a JSON object with full DNS records (A, AAAA, MX, NS, SPF, DMARC), RDAP-sourced registration metadata (registrar, creation date, expiry date, status flags), computed fields (age_days, expires_in_days, registered boolean, receives_email boolean), the checked_at timestamp, and any domain flags.","failureModes":["Invalid or malformed domain input returns an error or empty result","Unregistered domains return registered: false with NXDOMAIN: true","RDAP registry may not have data for some TLDs, leading to partial results","DNS propagation delays may cause stale or missing records","Payment failure over x402 protocol blocks the request before any lookup is performed"],"whenToPreferThis":"Choose this endpoint when you need a single, rich snapshot of a domain's registration status and DNS health in one call — especially when you need both WHOIS/RDAP data and DNS records together. Ideal for agents automating domain portfolio monitoring, pre-send email deliverability validation, or competitive research. Prefer this over generic WHOIS tools when you need structured JSON output with computed fields like expires_in_days and receives_email.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T00:35:23.229Z","isFirstParty":false,"canonicalSlug":"cited-brief-domain-check-650793e6"}