{"uid":"cap_F1V6avAzkkFDqfE23Ekc8","slug":"dkim-selector-cm-lookup-14d4936d","name":"DKIM Selector CM Lookup","description":"DKIM public key for selector \"cm\" of a domain: looks up cm._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 cm selector will verify. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/dkim/cm?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_Re7tZf3rmJOtOxpZMN3HS","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 'cm' selector of a given domain via Cloudflare DNS-over-HTTPS, returning key metadata including type, length, testing flag, and revocation status.","exampleAgentPrompt":"Can you check if the DKIM 'cm' selector is properly configured for example.com — I want to know the key type, length, and whether it's active or revoked?","exampleUseCases":[{"title":"Email deliverability pre-send check","prompt":"Before we send the campaign, can you verify that the DKIM cm selector is live and not revoked for our domain marketingco.com?"},{"title":"DKIM key rotation audit","prompt":"We just rotated our DKIM keys — can you check the cm selector for ourfirm.io and tell me the current key length and type to confirm the new key is published?"},{"title":"Troubleshooting DKIM signing failures","prompt":"Our transactional emails from sendplatform.com are failing DKIM verification — can you look up the cm selector DKIM record and tell me if the key is valid or if p= is empty?"}],"resultDescription":"Returns parsed details of the cm._domainkey.<domain> TXT record: DKIM version (v=), key type (k=, e.g. rsa or ed25519), public key length in bits, whether the key is in testing mode, and whether the key is revoked (empty p= value). Confirms whether mail signed with the cm selector will pass verification.","failureModes":["Domain not found or no DNS resolution — returns NXDOMAIN or empty result","No DKIM TXT record published for cm._domainkey.<domain> — returns no records found","Malformed TXT record that cannot be parsed — may return partial data or parse error","Key is revoked (empty p=) — returned as a valid response indicating revocation","Network or Cloudflare DoH timeout — request may fail with a connectivity error"],"whenToPreferThis":"Use this endpoint specifically when you need to inspect the DKIM configuration for the 'cm' selector (e.g. used by Campaign Monitor or similar ESPs). It is purpose-built for that exact selector and parses all relevant DKIM fields automatically. Prefer it over generic DNS TXT lookups when you need structured DKIM-specific output including key length, type, testing flag, and revocation status without writing your own parser.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:59:26.283Z","isFirstParty":false,"canonicalSlug":"dkim-selector-cm-lookup-14d4936d"}