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DKIM Selector FM3 Change Watch
x402
DKIM Selector FM3 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 2026-10-19).
Monitors and detects changes in the DKIM FM3 selector DNS record for a given domain, returning current value, change status, diffed fields, and last-seen timestamp.
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for dkim selector fm3: 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 FM3 selector record value, a boolean indicating whether it changed since the last check, the specific fields that changed with their before and after values, and the timestamp of when the record was last observed. Previous results are retained for 90 days for comparison.
Example use cases
Email deliverability change alert
“Monitor the DKIM fm3 selector on sendgrid.example.com and tell me immediately if the record changes — I need to know if anyone tampers with our email signing keys.”
Post-migration DNS verification
“We just migrated our mail infrastructure for acme.com — watch the DKIM fm3 selector and confirm whether it changed from what it was before, showing me the before and after values.”
Scheduled DKIM health monitoring
“Set up a recurring check on the DKIM fm3 selector for newsletter.example.org so I get alerted any time the record is different from the previous check.”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/watch/dns/dkim/fm3?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to track whether a domain's DKIM FM3 selector record has changed over time, especially for automated alerting workflows. It is more efficient than a raw DKIM lookup because it handles state comparison, diff generation, and 90-day history internally, saving you from storing and comparing previous values yourself. Prefer this over a plain DKIM lookup when change detection, not just current value retrieval, is the goal.
Side effects
- Domain not found or invalid — DNS resolution fails
- No previous check stored — first call returns no change comparison, only current value
- DKIM FM3 selector record does not exist for the domain — returns empty or NXDOMAIN result
- Payment not processed — x402 payment required before response is returned
- Cloudflare DoH upstream timeout or outage
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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