{"uid":"cap_kaiZwDs6z7RRsqQYIJNH3","slug":"dkim-selector-k1-lookup-95e4915f","name":"DKIM Selector k1 Lookup","description":"DKIM public key for selector \"k1\" of a domain: looks up k1._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 k1 selector will verify. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/dkim/k1?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_m2kDemvAn5Fxw-muZ9vOi","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 'k1' selector of a given domain via Cloudflare DoH, returning key type, length, testing flag, and revocation status.","exampleAgentPrompt":"Can you check the DKIM k1 selector for example.com and tell me if the key is valid, what type it is, how long the key is, and whether it's been revoked?","exampleUseCases":[{"title":"Email deliverability pre-send check","prompt":"Before we send our marketing campaign, can you verify that the DKIM k1 selector for ourcompany.com is properly configured, not revoked, and the key is strong enough to pass verification?"},{"title":"Domain security audit","prompt":"I'm auditing the email security setup for clientdomain.com — can you look up their k1 DKIM selector and tell me the key type, key length, and whether the selector is in testing mode or active?"},{"title":"DKIM outage troubleshooting","prompt":"Our emails from newsletters.io are bouncing with DKIM signature failures — can you check if the k1 DKIM selector still has a valid, non-revoked public key published in DNS?"}],"resultDescription":"Returns parsed DKIM TXT record data for the k1._domainkey.<domain> record, including: v= tag (DKIM version), k= tag (key type, e.g. rsa), the public key itself, key length in bits, whether the testing flag (t=y) is set, and whether the key is revoked (empty p= field). Indicates whether mail signed with the k1 selector should verify successfully.","failureModes":["Domain does not exist or has no DNS — returns empty or NXDOMAIN result","No k1._domainkey record found — key absent or selector not published","Revoked key (empty p=) — lookup succeeds but key is invalid","Malformed TXT record — parsing may fail or return partial data","Cloudflare DoH timeout — transient DNS resolution failure","Invalid domain input — may return error or empty response"],"whenToPreferThis":"Use this endpoint when you specifically need to inspect the DKIM 'k1' selector for a domain — checking key validity, type, strength, and revocation status. Prefer this over generic DNS TXT lookups when you want structured, parsed DKIM fields rather than raw TXT data. Ideal for email deliverability audits, domain security checks, and debugging DKIM signing failures for the k1 selector specifically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:43:37.299Z","isFirstParty":false,"canonicalSlug":"dkim-selector-k1-lookup-95e4915f"}