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DKIM Selector S2 Change Watch
x402
DKIM Selector S2 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 TXT record for selector 's2' of a domain, detecting changes by comparing the current DNS lookup against the stored result from the previous check (kept 90 days).
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for dkim selector s2: 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 TXT record for the s2 selector, a boolean 'changed' flag indicating whether it differs from the previous call for the same domain, a list of fields that changed with before and after values, and a timestamp of when the record was last seen. History is retained for 90 days.
Example use cases
Email security key rotation alert
“Keep an eye on the DKIM s2 selector for acmecorp.com and let me know the moment it changes — I need to know immediately if someone rotates or tampers with that key.”
Post-deployment DKIM verification
“We just updated our DKIM s2 key for mybusiness.io — can you check whether the change has propagated and confirm what the before and after values look like?”
Scheduled compliance monitoring
“Every day, check whether the DKIM s2 record for ourcompany.net has changed since yesterday and flag any differences so we can include them in our security audit log.”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/watch/dns/dkim/s2?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to detect changes in the DKIM 's2' selector record over time, rather than just doing a one-time lookup. Ideal for scheduled monitoring workflows, security audits, or alerting pipelines where you want to know if and exactly what changed in the s2 DKIM key between polling intervals. Prefer this over a plain DNS lookup when change detection and historical comparison (90-day retention) matter.
Side effects
- Domain not found or NXDOMAIN — returns empty or error result
- No previous check stored (first call) — 'changed' field may be null or false with no before value
- DKIM s2 selector does not exist for the domain — returns no record found
- DNS resolution failure via Cloudflare DoH — transient network error
- Payment not processed — x402 payment required error before check runs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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