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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 hn-pulse.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Performs live reconnaissance on a domain, inspecting IPv4/IPv6 DNS resolution, TLS certificate issuer and expiry, and HTTP security header grading.
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://hn-pulse.agentdiet.dev/v1/dns-whois-tls-recon)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate details (issuer, expiry date, validity status), and an HTTP security header grade/analysis for the target domain, reflecting the domain's current security configuration at time of query.
Example use cases
Pre-vendor security due diligence
“Before we integrate with this SaaS vendor, can you check their domain openai.com for DNS resolution, TLS certificate details, and HTTP security headers so I know if their web security posture is solid?”
Certificate expiry monitoring alert
“Can you inspect the TLS certificate on stripe.com and tell me who issued it and when it expires? I want to make sure it won't expire soon.”
Competitive domain security benchmarking
“Run a DNS, TLS, and HTTP security header recon on github.com — I want to see their IPv4/IPv6 resolution, certificate issuer, and their security header grade.”
Technical details
Endpoint
GEThttps://hn-pulse.agentdiet.dev/v1/dns-whois-tls-recon?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need live, real-time OSINT on a specific domain's DNS resolution, TLS certificate posture, and HTTP security headers in a single call. It is ideal for security due diligence, pre-integration vendor checks, certificate expiry monitoring, or competitive reconnaissance. Prefer this over static WHOIS-only lookups when you need current TLS and security header data in addition to DNS.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty DNS data
- Domain has no TLS certificate (HTTP-only) — TLS fields may be null or absent
- Domain times out during live probing — may return partial results or timeout error
- Invalid domain string provided — returns validation error
- Domain is unreachable or firewalled — TLS/HTTP checks fail while DNS may succeed
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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