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DKIM Selector MJ Change Watch
x402
DKIM Selector MJ 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 the DKIM public key record for the 'mj' selector on a given domain and reports whether it has changed since the last check, including before/after field diffs.
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for dkim selector mj: 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 mj selector record for the domain, a boolean 'changed' flag indicating whether it differs from the previous check (stored up to 90 days), a list of changed fields with before and after values, and the timestamp of when the record was last seen.
Example use cases
Email provider DKIM key rotation alert
“Watch the DKIM mj selector for acme.com and alert me whenever the public key changes — I need to know before/after values so I can update our mail configuration.”
Security audit for unauthorized DKIM changes
“Check if the mj._domainkey DKIM record for mybusiness.com has changed since the last time you looked — flag it if anything is different so I can investigate a potential unauthorized modification.”
Scheduled deliverability monitoring
“Set up a recurring watch on the mj DKIM selector for newsletter.io and report back each time the record changes, including which fields were different and when the change was detected.”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/watch/dns/dkim/mj?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to continuously monitor whether a domain's DKIM 'mj' selector record has changed over time, rather than just fetching the current value. It is ideal for scheduled automation, security alerting, and email deliverability pipelines where detecting key rotation or unexpected changes matters. Prefer over a plain DKIM lookup endpoint when you need diff tracking and before/after change history without maintaining your own storage.
Side effects
- Domain not found or has no mj._domainkey TXT record — returns current answer with no prior data on first call
- No previous check stored (older than 90 days) — 'changed' field may be indeterminate or null
- DNS resolution failure via Cloudflare DoH — upstream timeout or error
- Payment failure via x402 protocol — check not executed
- Invalid or malformed domain input — request rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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