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DKIM Selector SMTP Watch
x402
DKIM Selector SMTP 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 the 'smtp' selector of a domain and alerts when it changes, comparing against the previously cached result.
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for dkim selector smtp: 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 smtp._domainkey.<domain>, a boolean 'changed' flag, a list of fields that changed with before/after values, and the timestamp of when the record was last seen. The previous result is retained for 90 days for comparison.
Example use cases
DKIM key rotation detection
“Set up a watch on the smtp DKIM selector for sendgrid.com and tell me if the public key or any part of the record has changed since the last check.”
Email security drift alerting
“I need to know right away if the smtp._domainkey record for mycompany.com has been tampered with or rotated — run the DKIM smtp watch and show me what changed and when it was last seen.”
Scheduled deliverability monitoring
“Every day, check whether the smtp DKIM selector record for our domain acmecorp.com has changed, and send me a report with the before and after values if anything is different.”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/watch/dns/dkim/smtp?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to continuously monitor the smtp DKIM selector specifically (not other selectors) for a domain, and want change-detection with delta reporting rather than a raw DNS lookup. It is ideal for scheduled polling workflows where you care about drift, key rotation, or unauthorized modifications to the smtp DKIM record over time. Prefer it over a plain DKIM lookup endpoint when you need the 'changed' flag and before/after field comparison baked in.
Side effects
- Domain does not exist or has no smtp DKIM record — returns current empty/null result with changed flag reflecting any prior state
- No previous check exists for the domain — changed may be null or false with no before values
- DNS lookup failure or timeout — may return an error or partial result
- Domain input missing or malformed — request may fail validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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