{"uid":"cap_KTvHPuno0klPs14UU9EZa","slug":"dkim-selector-ms1-lookup-0376fa46","name":"DKIM Selector ms1 Lookup","description":"DKIM public key for selector \"ms1\" of a domain: looks up ms1._domainkey.<domain> (TXT, Cloudflare DoH) and parses v=, k=, key type, public-key length, testing flag and whether the key is revoked (empty p=). Confirms that mail signed with the ms1 selector will verify. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/dkim/ms1?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"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_dZVoSTx_zq7kx39yG2ElJ","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":"Looks up and parses the DKIM public key for the 'ms1' selector of a given domain via Cloudflare DoH, returning key metadata and validity status.","exampleAgentPrompt":"Can you check whether the ms1 DKIM selector is properly configured for example.com — I want to know if the key is valid, what type and length it is, and whether it's revoked or in testing mode?","exampleUseCases":[{"title":"Email deliverability audit for a domain","prompt":"I'm troubleshooting email deliverability for acmecorp.com — can you look up the ms1 DKIM selector and tell me if the public key is valid, what key type it is, its length, and whether it's been revoked?"},{"title":"Verify DKIM before sending a campaign","prompt":"Before we send our marketing emails through the ms1-signed sender, can you confirm that the ms1 DKIM selector on newsletter.mybrand.com is active, not in testing mode, and not revoked?"},{"title":"Security audit of a third-party domain","prompt":"I need to audit the email security posture of partner-company.io — can you pull the ms1 DKIM record and tell me the key length, key type, and whether it looks properly configured or potentially compromised?"}],"resultDescription":"Returns parsed DKIM TXT record data for ms1._domainkey.<domain>, including the protocol version (v=), key type (k=), public key length in bits, whether the key is in testing mode, and whether the key is revoked (empty p= field), plus a confirmation of whether mail signed with the ms1 selector will successfully verify.","failureModes":["Domain does not have an ms1._domainkey TXT record — returns not found or empty result","DNS lookup fails due to network or Cloudflare DoH unavailability","Malformed TXT record that cannot be parsed into DKIM fields","Domain name is invalid or unresolvable","Key is present but has empty p= field indicating revocation — returned as revoked status"],"whenToPreferThis":"Use this endpoint when you specifically need to verify or audit the 'ms1' DKIM selector, which is commonly used by Microsoft and certain bulk email providers. Prefer this over generic DNS TXT lookups when you need structured parsing of DKIM fields (key type, length, testing flag, revocation) rather than raw DNS output. Choose this when validating email authentication configuration for domains using the ms1 selector specifically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:59:13.651Z","isFirstParty":false,"canonicalSlug":"dkim-selector-ms1-lookup-0376fa46"}