{"uid":"cap_t41a7gXTMHImF_8gh4SG-","slug":"dns-txt-dmarc-subdomain-63cabb0b","name":"dns-txt-dmarc-subdomain","description":"TXT record of _dmarc.<domain>: looks up the _dmarc host under the domain you give (TXT via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like _dmarc without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/dmarc/txt?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wwU7GBtD8l2ZZfOpFGt9u","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up the TXT DNS record for the _dmarc subdomain of a given domain via Cloudflare DoH and reports its existence, record values, and TTL.","exampleAgentPrompt":"Can you check if example.com has a DMARC record set up — look up the _dmarc TXT DNS entry and tell me what the policy says and whether it exists?","exampleUseCases":[{"title":"Verify vendor email security posture","prompt":"Before we start working with acmecorp.com, can you check if they have a DMARC TXT record configured under _dmarc.acmecorp.com? I want to know if they have email spoofing protection in place."},{"title":"Audit domain before email campaign","prompt":"We're about to send a bulk campaign from newsletter.mycompany.com — can you check whether _dmarc.mycompany.com has a TXT record and what the policy value is?"},{"title":"Diagnose email deliverability issue","prompt":"Emails from clientdomain.io are landing in spam — can you look up the DMARC TXT record at _dmarc.clientdomain.io to see if they have a policy and what it says?"}],"resultDescription":"Returns whether the _dmarc TXT record exists for the queried domain, along with the raw TXT record string (e.g. 'v=DMARC1; p=reject; ...'), the TTL, and the response status from Cloudflare DoH.","failureModes":["Domain has no _dmarc TXT record — endpoint returns a non-existence result rather than an error","Invalid or malformed domain name input causes a DNS resolution failure","Network or Cloudflare DoH timeout results in no response","Rate limiting or payment failure ($0.01 USDC per call) prevents the lookup from completing"],"whenToPreferThis":"Use this endpoint when you need a quick, targeted check for whether a domain has a DMARC policy configured, without enumerating subdomains or querying other DNS record types. Ideal for email security audits, vendor due-diligence checks, or deliverability diagnostics where only the _dmarc TXT record is needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:59:28.792Z","isFirstParty":false,"canonicalSlug":"dns-txt-dmarc-subdomain-63cabb0b"}