{"uid":"cap_43tMciEWIZ7Tncg2NRBoa","slug":"dkim-selector-fm1-public-key-lookup-c008f5a5","name":"DKIM Selector fm1 Public Key Lookup","description":"DKIM public key for selector \"fm1\" of a domain: looks up fm1._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 fm1 selector will verify. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/dkim/fm1?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_a2WdCIHw4Dxd46pyafbww","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 'fm1' selector of a given domain, verifying signing capability via DNS TXT record resolution.","exampleAgentPrompt":"Can you check the DKIM fm1 selector record for example.com — I need to know if the public key is valid, what key type and length it uses, and whether it's been revoked?","exampleUseCases":[{"title":"Fastmail DKIM configuration audit","prompt":"Check the fm1 DKIM selector record for my domain mycompany.com — I need to know if the fm1 public key is present and valid, or if it's been revoked, since we use Fastmail for sending."},{"title":"Email deliverability troubleshooting","prompt":"Our emails signed with the fm1 selector are failing DKIM verification — can you look up the fm1._domainkey TXT record for startupco.io and tell me the key type, length, and whether the p= value is empty?"},{"title":"Security posture review of DKIM keys","prompt":"I'm auditing email security for newsletter.org — pull the fm1 DKIM selector and tell me if it's in testing mode, what the key length is, and whether the record looks properly configured."}],"resultDescription":"Returns the parsed DKIM TXT record for fm1._domainkey.<domain>, including the DKIM version (v=), key type (k=), public key length in bits, whether the record is in testing mode, and whether the key has been revoked (empty p= field). Confirms whether mail signed with the fm1 selector will pass DKIM verification.","failureModes":["Domain does not have an fm1._domainkey TXT record — returns not-found or empty result","DNS resolution failure via Cloudflare DoH — network or upstream timeout","Domain input missing or malformed — validation error","Key is revoked (p= field is empty) — returned as a parsed flag, not an error","Non-standard or unparseable DKIM record format — partial parse result"],"whenToPreferThis":"Use this endpoint when you specifically need to inspect the 'fm1' DKIM selector, commonly associated with Fastmail-hosted domains or services using the fm1 signing key. Prefer this over generic DNS TXT lookups when you need structured DKIM field parsing (v=, k=, key length, revocation status) rather than raw TXT data. Choose sibling selectors (sfmc, bluehost, constantcontact) when investigating other email service providers.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:59:20.846Z","isFirstParty":false,"canonicalSlug":"dkim-selector-fm1-public-key-lookup-c008f5a5"}