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DKIM Selector CM Lookup
x402
DKIM Selector CM Lookup is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
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.
Price / call$0.01
Success—
StatusUnknown
How this service works
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.
Output
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.
Example use cases
Email deliverability pre-send check
“Before we send the campaign, can you verify that the DKIM cm selector is live and not revoked for our domain marketingco.com?”
DKIM key rotation audit
“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?”
Troubleshooting DKIM signing failures
“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?”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/dns/dkim/cm?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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