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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 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 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://agentdiet.dev/v1/dns-whois-tls-recon)
Output
Returns live DNS resolution data (IPv4/IPv6 addresses), TLS certificate details (issuer, expiry date, validity), and an HTTP security header audit with a security grade — all fetched in real time for the target domain.
Example use cases
Third-party vendor security review
“I need to assess the security posture of stripe.com before we integrate with them — can you check their DNS resolution, TLS certificate details, and HTTP security header grade?”
SSL certificate expiry monitoring
“Check when the TLS certificate for mybusiness.com expires and who issued it — I want to make sure we're not about to go down unexpectedly.”
Competitor infrastructure reconnaissance
“Do an OSINT recon on competitor.io and tell me their IPv4 and IPv6 addresses, their SSL cert issuer, and whether their HTTP security headers are up to standard.”
Technical details
Endpoint
GEThttps://agentdiet.dev/v1/dns-whois-tls-recon?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, unified OSINT snapshot of a domain's network and security posture — combining DNS, TLS, and HTTP header data in a single call — rather than querying separate tools for each. Ideal for security audits, vendor due diligence, certificate expiry monitoring, or domain reconnaissance workflows.
Side effects
- Domain does not exist or fails to resolve — returns DNS lookup failure
- Domain is unreachable over HTTPS — TLS certificate data unavailable
- Domain blocks HTTP HEAD/GET probes — security headers cannot be graded
- Invalid or malformed domain name input — request validation error
- Timeout if target domain responds very slowly
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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