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DKIM Selector k2 Change Watch
x402
DKIM Selector k2 Change Watch is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-20).
Monitors the DKIM public key record for selector 'k2' of a given domain, detecting and reporting any changes compared to the previous check (retained 90 days).
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for dkim selector k2: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.
Output
Returns the current DKIM k2 selector record for the domain, a boolean 'changed' flag indicating whether it differs from the last stored result, a list of fields that changed with their before and after values, and the timestamp of when the record was last seen. Historical comparison data is retained for 90 days.
Example use cases
Alert on unauthorized DKIM key rotation
“Watch the k2 DKIM selector record for acmecorp.com and alert me immediately if it changes — I want to know the exact fields that were modified and what they looked like before and after.”
Scheduled email security audit
“Check whether the k2 DKIM selector for mybusiness.com has changed compared to 90 days ago and give me a full diff so I can verify no unauthorized key rotation happened.”
Post-migration DNS change verification
“We just migrated our mail infrastructure for techstartup.io — can you check the k2 DKIM selector record now and tell me if it's changed from the previous snapshot, so I can confirm the new key is live?”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/watch/dns/dkim/k2?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to continuously monitor whether the DKIM k2 selector record for a specific domain has changed, especially for scheduled alerting workflows. It is purpose-built for change detection with 90-day state retention, returning a structured diff — making it superior to a raw DKIM lookup endpoint when your goal is detecting rotation, unauthorized key changes, or verifying post-migration state.
Side effects
- Domain does not have a k2 DKIM selector record (NXDOMAIN or empty TXT response)
- No previous check stored for domain within 90 days — changed field may default to false or null
- DNS lookup failure or timeout from upstream resolver
- Invalid or missing domain parameter resulting in a bad request error
- Rate limiting or payment failure for the $0.02 per call fee
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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