{"uid":"cap_pQevLUD-kO-Wx-3LP_goK","slug":"agentshelf-syntexa-ch-smtp-dkim-txt-lookup-smtp-domainkey-e5c0bde6","name":"agentshelf.syntexa.ch SMTP DKIM TXT Lookup (smtp._domainkey)","description":"Call when an agent needs TXT at smtp._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-smtp first.","url":"https://agentshelf.syntexa.ch/v1/dns-txt-dkim-smtp?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":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Ph-LYuYy9-qZJMa5eL1X6","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up the DKIM TXT DNS record at smtp._domainkey.{hostname} and returns its value","exampleAgentPrompt":"Can you look up the DKIM TXT record for the smtp selector on example.com — I need to see what's published at smtp._domainkey.example.com.","exampleUseCases":[{"title":"Verify SMTP DKIM DNS setup","prompt":"Check whether smtp._domainkey is properly configured for my domain acme.com — I need to see the raw TXT record to confirm DKIM is set up for SMTP sending."},{"title":"Audit email authentication for a client domain","prompt":"Can you pull the DKIM TXT record at smtp._domainkey.clientdomain.org? I'm auditing their email authentication setup and need to see what key is published for the smtp selector."},{"title":"Diagnose DKIM alignment issue","prompt":"I'm troubleshooting email delivery problems for newsletter.example.net — can you fetch the smtp._domainkey TXT record to see if the DKIM key matches what our mail server is using?"}],"resultDescription":"The DNS TXT record value published at smtp._domainkey.{hostname}, typically containing the DKIM public key and policy fields (e.g. v=DKIM1; k=rsa; p=...).","failureModes":["Domain does not exist or has no smtp._domainkey TXT record — returns empty or NXDOMAIN response","Invalid hostname format — returns validation error","DNS resolution timeout — returns error indicating lookup failure","Network or upstream DNS error — returns service error"],"whenToPreferThis":"Use this endpoint when you specifically need the DKIM TXT record for the 'smtp' selector (smtp._domainkey.{hostname}). For other selectors (e.g. google._domainkey or pic._domainkey), use the corresponding sibling endpoints. Prefer the unpaid sandbox version (POST /v1/sandbox/dns-txt-dkim-smtp) when available and only use this paid endpoint when the sandbox is unavailable or not appropriate.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:47:41.529Z","isFirstParty":false,"canonicalSlug":"agentshelf-syntexa-ch-smtp-dkim-txt-lookup-smtp-domainkey-e5c0bde6"}