{"uid":"cap_0_s2UBMghWhcX2vjzpAap","slug":"dkim-default-selector-dns-txt-record-lookup-d7475452","name":"DKIM Default Selector DNS TXT Record Lookup","description":"Call when an agent needs TXT at default._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-default first.","url":"https://agentshelf.syntexa.ch/v1/dns-txt-dkim-default?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":"0.008","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":"$0.008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_CK04byrNcApT1WmfPaOcz","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.008","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Retrieves the TXT record at default._domainkey.{hostname} to fetch the DKIM public key for the default selector of a given domain","exampleAgentPrompt":"Look up the DKIM TXT record at the default selector for the domain example.com — I need to see what public key they have published in DNS for email signing.","exampleUseCases":[{"title":"Email deliverability audit for domain","prompt":"Check whether example.com has a valid DKIM public key published at the default selector — fetch the TXT record at default._domainkey.example.com so I can audit their email authentication setup."},{"title":"Verify DKIM before sending campaign","prompt":"Before I launch this email campaign through mailgun.com, can you pull the default DKIM TXT record for mailgun.com so I can confirm the signing key is properly published in DNS?"},{"title":"Diagnose email authentication failure","prompt":"I'm getting DKIM failures for messages from newsletter.acme.io — can you fetch the DNS TXT record at default._domainkey.newsletter.acme.io so I can see what key is currently published?"}],"resultDescription":"Returns the raw DNS TXT record content found at default._domainkey.{hostname}, which contains the DKIM public key and associated policy fields (e.g. v=DKIM1; k=rsa; p=...). If no record exists, an appropriate not-found or error response is returned.","failureModes":["Domain does not exist — DNS NXDOMAIN response","No TXT record at default._domainkey.{hostname} — record not found","Hostname exceeds 253 characters or is empty — validation error","DNS resolution timeout or network error","Invalid hostname format causing lookup failure"],"whenToPreferThis":"Use this endpoint when you specifically need the DKIM TXT record for the 'default' selector of a domain (i.e. querying default._domainkey.{hostname}). If you need a different DKIM selector, you must construct the correct DNS name manually and use a different lookup. Prefer the free sandbox variant (unpaid POST /v1/sandbox/dns-txt-dkim-default) for testing before committing the $0.008 USDC charge.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:43:44.172Z","isFirstParty":false,"canonicalSlug":"dkim-default-selector-dns-txt-record-lookup-d7475452"}