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Domain OSINT, TLS Certificate & Security Headers Recon
Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from x402-audit.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Performs live DNS resolution (IPv4/IPv6), TLS certificate inspection (issuer/expiry), and HTTP security header grading for any target domain.
Price / call$0.01
Success—
StatusUnknown
How this service works
Inspects live IPv4/IPv6 DNS resolution, TLS certificate issuer/expiry, and HTTP security grade. (Live x402 v2, IETF MPP & MCP endpoint at https://x402-audit.agentdiet.dev/v1/whois-lookup)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security headers grade reflecting presence or absence of headers like HSTS, CSP, X-Frame-Options, and similar security controls.
Example use cases
Pre-acquisition domain security audit
“Before we finalize the acquisition, can you check the DNS resolution, TLS certificate issuer and expiry, and HTTP security grade for targetstartup.io? I need to know if there are any glaring security gaps.”
Competitor security posture research
“I'm doing OSINT on our main competitors — can you pull the TLS cert info, IPv4/IPv6 DNS records, and security header scores for stripe.com and braintreepayments.com?”
SSL certificate expiry monitoring
“Can you check when the TLS certificate for our client's site, clientsite.com, expires and who issued it? I want to flag it if it's expiring within 30 days.”
Technical details
Endpoint
GEThttps://x402-audit.agentdiet.dev/v1/whois-lookup?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, live, multi-faceted security reconnaissance snapshot of a domain covering DNS, TLS, and HTTP headers in a single call — especially in OSINT, pre-acquisition due diligence, competitive analysis, or certificate expiry monitoring workflows. It is preferable to generic WHOIS-only tools when TLS and security header data are also required.
Side effects
- Domain does not exist or has no DNS records — returns empty or error response
- Domain is unreachable/offline — TLS and header checks may timeout or fail
- Invalid domain string provided — returns validation error
- TLS certificate is self-signed or expired — still returned but flagged
- IPv6 not available for domain — only IPv4 returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domainrequired | string | Target domain name (e.g. anthropic.com, openai.com) for DNS, TLS certificate, and security header OSINT |
Output
Schema · Response
{
"type": "object"
}Reviews
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