{"uid":"cap_kDAAALSmIKhRjuuZI9b-_","slug":"fastmail-dkim-txt-dns-record-lookup-0ee74c88","name":"Fastmail DKIM TXT DNS Record Lookup","description":"Call when an agent needs TXT at fastmail._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-fastmail first.","url":"https://agentshelf.syntexa.ch/v1/dns-txt-dkim-fastmail?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_c8ZdeYfzSS9GFS7Hqigja","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":"Looks up the DKIM TXT record at the fastmail._domainkey.{hostname} DNS path for a given hostname","exampleAgentPrompt":"Can you look up the Fastmail DKIM TXT record for the domain example.com — specifically the one at fastmail._domainkey.example.com?","exampleUseCases":[{"title":"Verify Fastmail DKIM setup for domain","prompt":"I just set up Fastmail for my domain morningbloom.co — can you check if the DKIM TXT record at fastmail._domainkey.morningbloom.co is properly published yet?"},{"title":"Debug email deliverability issues","prompt":"Our Fastmail emails for techstartup.io keep landing in spam — can you pull the DKIM TXT record at fastmail._domainkey.techstartup.io so I can see what's there?"},{"title":"Audit DNS records across client domains","prompt":"I need to confirm the Fastmail DKIM record is in place for our client's domain designagency.net — fetch the TXT record at fastmail._domainkey.designagency.net please."}],"resultDescription":"Returns the TXT record value found at the fastmail._domainkey.{hostname} DNS path, which contains the DKIM public key or configuration string used by Fastmail for email authentication for that domain.","failureModes":["No TXT record exists at the queried DNS name — returns empty or not-found response","Invalid or malformed hostname input causing a DNS resolution error","DNS timeout if the authoritative nameserver is slow or unreachable","Hostname exceeds 253 characters — rejected by schema validation"],"whenToPreferThis":"Use this endpoint when you specifically need to retrieve the DKIM TXT record published under the Fastmail selector (fastmail._domainkey) for a given hostname — for example, to verify Fastmail email authentication is properly configured, to audit DNS records, or to debug email deliverability. Prefer the free sandbox version (POST /v1/sandbox/dns-txt-dkim-fastmail) first if available. If you need a different DKIM selector or a different mail provider's DKIM record, this endpoint is not appropriate.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:48:00.544Z","isFirstParty":false,"canonicalSlug":"fastmail-dkim-txt-dns-record-lookup-0ee74c88"}