{"uid":"cap_Y0Xmjb-HxgUD_4Cznh3rF","slug":"agentshelf-dns-txt-dmarc-lookup-a8704857","name":"AgentShelf DNS TXT DMARC Lookup","description":"Call when an agent needs TXT at _dmarc that starts with v=DMARC1. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dmarc first.","url":"https://agentshelf.syntexa.ch/v1/dns-txt-dmarc?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"hostname":{"type":"string","examples":["example.com"],"maxLength":253,"minLength":1,"description":"Public DNS hostname such as example.com. Not a URL, not an IP literal, and not a private name."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_zmSvTskd4SWW_FviSnil3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up the DMARC TXT record (starting with v=DMARC1) at the _dmarc subdomain of a given hostname via DNS","exampleAgentPrompt":"Can you look up the DMARC TXT record for example.com and tell me what policy it has configured?","exampleUseCases":[{"title":"Email deliverability audit","prompt":"Check the DMARC record for acmecorp.com — I want to know if they have a valid v=DMARC1 policy configured before we send them a partnership email campaign."},{"title":"Domain security posture check","prompt":"Pull the DMARC TXT record for startup.io — I'm reviewing their email security setup and need to see what policy is at _dmarc.startup.io."},{"title":"Phishing defense verification","prompt":"Look up the DMARC record for mybank.com so I can confirm it has a strict reject or quarantine policy before flagging suspicious emails as phishing."}],"resultDescription":"The DMARC TXT record content found at _dmarc.<hostname>, typically a string beginning with v=DMARC1 followed by DMARC policy tags such as p=reject, rua=, ruf=, etc. If no DMARC record exists, the response will indicate absence.","failureModes":["No DMARC record found at _dmarc subdomain — domain may not have DMARC configured","Invalid or malformed hostname input returns a validation error","DNS resolution timeout if the authoritative nameserver is unresponsive","Non-DMARC TXT records present at _dmarc but none starting with v=DMARC1","Payment failure if USDC balance is insufficient for the $0.003 fee"],"whenToPreferThis":"Use this endpoint when an agent specifically needs to retrieve the DMARC policy TXT record for a domain (the v=DMARC1 entry at _dmarc.<hostname>). Prefer the free sandbox variant /v1/sandbox/dns-txt-dmarc first if available. Choose this over generic DNS lookup APIs when you only need the DMARC-specific TXT record and want a clean, parsed result without handling raw DNS responses.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:47:59.798Z","isFirstParty":false,"canonicalSlug":"agentshelf-dns-txt-dmarc-lookup-a8704857"}