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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 workflows.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, 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://workflows.agentdiet.dev/v1/whois-lookup)
Output
Returns a structured object containing live IPv4 and IPv6 DNS resolution results, TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security header grade reflecting the presence or absence of headers like HSTS, CSP, X-Frame-Options, and similar.
Example use cases
Pre-deployment security audit
“Before we go live with our new SaaS app at myapp.io, can you check its DNS resolution, verify the TLS certificate is valid and not expiring soon, and give me a security headers grade?”
Vendor security due diligence
“We're onboarding a new payment processor at payments-partner.com — can you pull their TLS cert details, check who issued it, and tell me if their HTTP security headers are properly configured?”
Phishing domain investigation
“I got a suspicious email from a domain called secure-bank-login.net — can you do a full OSINT check on it, including DNS resolution, TLS certificate info, and security header grade, so I can tell if it's legit?”
Technical details
Endpoint
GEThttps://workflows.agentdiet.dev/v1/whois-lookup?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, single-call recon of a domain's live network posture — DNS IPs, TLS cert health, and HTTP security grade — without standing up your own scanning infrastructure. Ideal for security due diligence, vendor assessments, phishing investigations, or pre-launch audits where you need actionable OSINT in one shot rather than piecing together multiple tools.
Side effects
- Domain does not exist or fails DNS resolution — returns empty or error DNS fields
- Domain has no HTTPS/TLS — TLS certificate fields may be null or unavailable
- HTTP request to domain times out — security headers grade may be unavailable
- Invalid domain string passed — validation error returned
- Domain resolves but blocks external probes — partial results 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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