{"uid":"cap_NXb6iPqZafut4YqHzDs9b","slug":"dkim-txt-record-lookup-cm-selector-b2ea1609","name":"DKIM TXT Record Lookup — cm Selector","description":"Call when an agent needs TXT at cm._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-cm first.","url":"https://agentshelf.syntexa.ch/v1/dns-txt-dkim-cm?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":"0.01","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_fKzufEZ8aXNewYgFWWFQf","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":"Retrieves the DKIM TXT DNS record at the cm._domainkey.<hostname> selector for a given domain","exampleAgentPrompt":"What's the DKIM TXT record at the cm._domainkey selector for syntexa.ch?","exampleUseCases":[{"title":"Email deliverability audit","prompt":"Can you check the DKIM TXT record for the cm selector on example.com? I want to see what public key is published for email signing."},{"title":"DKIM configuration verification","prompt":"We just set up DKIM on our domain mailserver.io — can you pull the TXT record at cm._domainkey to confirm it's live and correct?"},{"title":"Troubleshoot email authentication failure","prompt":"Emails from newsletter.org are failing DKIM checks on the cm selector — can you look up the TXT DNS record at cm._domainkey.newsletter.org so I can see what's there?"}],"resultDescription":"Returns the TXT record value published at cm._domainkey.<hostname> in DNS, which typically contains the DKIM public key and policy flags used for email authentication verification.","failureModes":["Hostname does not exist in DNS — returns error or empty result","No TXT record exists at cm._domainkey.<hostname> — record not found response","Invalid hostname format (too long, empty, or malformed) — validation error","DNS resolution timeout or network error — transient failure","Domain exists but no DKIM record for cm selector specifically — empty or NXDOMAIN result"],"whenToPreferThis":"Use this endpoint when you specifically need the DKIM TXT record for the 'cm' selector (i.e. the DNS name cm._domainkey.<hostname>). If you need a different DKIM selector, that is a different DNS name and a different endpoint. Prefer the free sandbox endpoint (unpaid POST /v1/sandbox/dns-txt-dkim-cm) for testing before paying $0.01 USDC per call on this production endpoint.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:53:26.500Z","isFirstParty":false,"canonicalSlug":"dkim-txt-record-lookup-cm-selector-b2ea1609"}