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DKIM Selector1 Public Key Lookup
x402
DKIM Selector1 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 record for the 'selector1' selector of a given domain, reporting key type, length, testing flag, and revocation status.
Price / call$0.01
Success—
StatusUnknown
How this service works
DKIM public key for selector "selector1" of a domain: looks up selector1._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 selector1 selector will verify. $0.01 per lookup.
Output
Returns parsed details from the selector1._domainkey.<domain> DNS TXT record including: DKIM version tag (v=), key type (k=, e.g. rsa or ed25519), public key bit length, whether the testing flag (t=y) is set, and whether the key is revoked (empty p= field). Also confirms whether mail signed with the selector1 selector will successfully verify.
Example use cases
Email deliverability pre-send check
“Before we send the campaign, can you verify that selector1 DKIM is properly set up and not revoked for ourdomain.com so we know signed emails will actually verify?”
Security audit of outbound mail signing
“As part of the mail security audit, look up the DKIM selector1 record for acmecorp.com and tell me the key type, key length, and whether it's in testing mode.”
Diagnosing DKIM verification failures
“Our emails to Gmail keep failing DKIM — can you check if the selector1 DKIM record for mybusiness.io is valid, or if the key might be empty or revoked?”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/dns/dkim/selector1?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to inspect the DKIM 'selector1' selector (common on Microsoft 365 / Exchange Online domains) rather than a generic or custom selector. It is purpose-built for selector1 and returns structured parsed metadata (key length, revocation, testing mode) rather than a raw DNS response, making it ideal for email security audits, deliverability diagnostics, and automated compliance checks. Prefer a generic DKIM or DNS TXT lookup if the domain uses a different selector name.
Side effects
- Domain does not have a selector1._domainkey TXT record — returns not found or NXDOMAIN
- Key is revoked (p= is empty) — returned as a parsed finding, not an error
- Cloudflare DoH is unreachable — service returns upstream error
- Invalid or malformed domain input — request rejected
- Payment not provided or insufficient — 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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