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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 serp-extract.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-23).
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://serp-extract.agentdiet.dev/v1/dns-whois-tls-recon)
Output
Returns live DNS resolution results (IPv4/IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security header grade/assessment for the target domain, giving a concise security posture snapshot.
Example use cases
Pre-acquisition security due diligence
“We're considering acquiring a startup — can you inspect their domain, startupxyz.com, and tell me who issued their TLS cert, when it expires, and whether their HTTP security headers are up to scratch?”
Detect expired or misconfigured SSL
“I think the SSL cert on our partner's site clientportal.example.com might be expiring soon — can you check the TLS certificate issuer and expiry date, and also pull the DNS resolution details?”
Competitive infrastructure intelligence
“I want to do a quick OSINT sweep on openai.com — show me the IPv4 and IPv6 DNS records, TLS certificate info, and what security header grade their site gets.”
Technical details
Endpoint
POSThttps://serp-extract.agentdiet.dev/v1/dns-whois-tls-recon?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a live, all-in-one domain recon that combines DNS resolution, TLS certificate inspection, and HTTP security header grading in a single call, rather than running separate DNS lookup, SSL checker, or security header scanner tools individually.
Side effects
- Domain does not exist or fails DNS resolution — no records returned
- TLS certificate cannot be retrieved (e.g. port 443 not open, self-signed or missing cert)
- Domain is unreachable or times out during live probe
- Invalid domain format provided in input
- HTTP security headers not present or site returns non-standard responses
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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