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Domain Intel – MX Retarus Check
x402
Domain Intel – MX Retarus Check is a paid API for AI agents from dns.halowerk.com, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-12).
Looks up WHOIS, DNS, mail policy (SPF/DKIM/DMARC), TLS certificate, and subdomains for a given domain, with optional MX record baseline comparison against Retarus mail infrastructure.
Price / call$0.009
Success—
StatusUnknown
How this service works
Requires an unauthenticated caller-owned baseline; returns real current NS/MX records, added/removed sets and tri-state target-provider transition. Current DNS comes from one bounded native recursive-resolver query; existing Dossier provides context. Resolver caching may apply; no account ownership or global migration-completion claim. Existing provider patterns are reused without new invented attribution. At most50records,domain253chars,9sbudget; DNSsubquery2s/oneattempt. Unknown provider remai
Output
Returns aggregated domain intelligence including WHOIS registration data, DNS records, mail policy records (SPF, DKIM, DMARC), TLS/SSL certificate details, discovered subdomains, and optionally a comparison of current MX records against a provided baseline showing any deviations.
Example use cases
Email infrastructure audit for security team
“Run a full domain intel check on acmecorp.com — I need its WHOIS info, DNS records, SPF/DKIM/DMARC mail policies, TLS certificate, and a list of subdomains so I can audit their email security posture.”
Detect MX record drift from Retarus baseline
“Check domain intel for clientdomain.com and compare its current MX records against the baseline I recorded last month: exchange=mx1.retarus.net priority=10, exchange=mx2.retarus.net priority=20, observed at 2024-06-01T12:00:00Z — flag if anything has changed.”
Competitive domain recon before acquisition
“I need a full intelligence snapshot of targetcompany.io before we proceed — WHOIS ownership, all DNS records, their mail routing setup, TLS cert details, and any subdomains you can find.”
Technical details
Endpoint
POSThttps://dns.halowerk.com/domain/articles/mx-retarus?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, single-call domain intelligence snapshot covering WHOIS, DNS, mail policy, TLS, and subdomains without managing API keys or subscriptions. Especially useful when you want to compare current MX records against a known Retarus mail infrastructure baseline to detect drift. Prefer over general DNS lookup tools when you need the full multi-layer view in one pay-per-call request.
Side effects
- Domain not found or unresolvable — returns empty or error response
- Invalid domain format (exceeds 253 characters or malformed) — schema validation error
- WHOIS data unavailable for some TLDs — partial response
- TLS certificate lookup fails if domain has no HTTPS — missing cert data
- Baseline MX comparison returns no diff if baseline format is malformed
- Payment failure over x402 — 402 response, call not executed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | |
| baseline | object |
Tags
x402
Reviews
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