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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 domain-osint.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 a given 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://domain-osint.agentdiet.dev/v1/dns-whois-tls-recon)
Output
Returns live DNS resolution data (IPv4/IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity), and an HTTP security header grade/assessment for the target domain, giving a full network and security posture snapshot.
Example use cases
Pre-vendor due diligence security check
“I'm about to sign a contract with a SaaS vendor at stripe.com — can you pull their DNS resolution, TLS certificate issuer and expiry, and HTTP security header grade so I can assess their infrastructure security posture before we proceed?”
Certificate expiry monitoring for owned domains
“Check the TLS certificate details for mybusiness.com — I want to know who issued it, when it expires, and whether our HTTP security headers are up to scratch.”
Competitor domain OSINT reconnaissance
“I want to do a quick OSINT check on anthropic.com — find out what IPs it resolves to for both IPv4 and IPv6, who signed their TLS cert and when it expires, and how their HTTP security headers score.”
Technical details
Endpoint
GEThttps://domain-osint.agentdiet.dev/v1/dns-whois-tls-recon?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a combined, single-call OSINT snapshot covering DNS resolution, TLS certificate details, and HTTP security header grading for a domain — ideal for security due diligence, vendor assessments, domain monitoring, or reconnaissance workflows where you want all three dimensions in one fast lookup rather than calling separate DNS, certificate, and header inspection tools.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty DNS records
- Domain is unreachable over HTTPS — TLS certificate data may be unavailable
- Domain has no IPv6 record — IPv6 field absent or null
- Security headers absent on the domain — grade reflects missing headers
- Invalid domain string provided — validation error returned
- Network timeout reaching the target domain — partial or error response
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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