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DKIM S3 Selector Public Key Lookup
x402
DKIM S3 Selector Public Key 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 's3' selector of a given domain by querying s3._domainkey.<domain> via Cloudflare DNS over HTTPS, returning key type, length, testing flag, and revocation status.
Price / call$0.01
Success—
StatusUnknown
How this service works
DKIM public key for selector "s3" of a domain: looks up s3._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 s3 selector will verify. $0.01 per lookup.
Output
Returns parsed DKIM TXT record details for the s3._domainkey.<domain> lookup, including the protocol version (v=), key type (k=), public key length in bits, whether the domain is in testing mode (t=y), and whether the key is revoked (empty p= field), along with a confirmation of whether mail signed with this selector will verify successfully.
Example use cases
Pre-send DKIM health check
“Before we launch this email campaign, can you check if the s3 DKIM selector is properly set up and not revoked for ourdomain.com?”
Email deliverability audit
“We're having deliverability issues — can you pull the DKIM s3 selector record for clientdomain.com and tell me the key length, type, and whether it's in testing mode?”
Security review of outbound mail signing
“As part of our email security audit, look up the s3 DKIM selector for companyxyz.com and confirm whether mail signed with that selector will actually verify correctly.”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/dns/dkim/s3?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to inspect the 's3' DKIM selector for a domain — particularly useful for email security audits, deliverability troubleshooting, or verifying that a specific mail-signing configuration is active and valid. Prefer this over generic DNS TXT lookups when you need structured parsing of DKIM fields (key type, length, revocation, testing flag) rather than raw DNS text records.
Side effects
- Domain has no s3._domainkey TXT record — returns NXDOMAIN or empty response
- DKIM record exists but is malformed and cannot be parsed
- Key is revoked (p= is empty) — endpoint reports this explicitly
- DNS resolution failure via Cloudflare DoH — transient network error
- Invalid or non-existent domain name provided as input
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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