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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, 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/whois-lookup)
Output
Returns a JSON object containing live IPv4 and IPv6 DNS resolution results, TLS certificate issuer and expiry details, and an HTTP security header grade/audit for the queried domain.
Example use cases
SSL certificate expiry monitoring
“Check when the TLS certificate for stripe.com expires, who issued it, and whether the security headers are properly configured.”
Security due diligence before vendor onboarding
“I'm about to integrate with a new vendor at vendor-api.example.com — can you pull their DNS resolution, TLS cert issuer and expiry, and HTTP security grade so I can assess their security posture?”
Investigating a suspicious domain
“Run an OSINT check on the domain phishy-lookalike.net — I want to see its IPv4 and IPv6 addresses, TLS certificate info, and how its HTTP security headers score.”
Technical details
Endpoint
GEThttps://domain-osint.agentdiet.dev/v1/whois-lookup?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, single-call OSINT snapshot of a domain's DNS posture, TLS certificate health, and HTTP security header configuration. It is ideal for security due diligence, certificate monitoring, or domain investigation workflows where you want DNS + TLS + headers in one response rather than stitching together separate tools.
Side effects
- Domain does not exist or fails DNS resolution — likely returns an error or empty DNS fields
- Domain has no TLS certificate (HTTP-only) — TLS fields may be null or absent
- Network timeout reaching the target domain — may return a timeout error
- Invalid or malformed domain input — returns validation error
- Domain actively blocks probes — may return incomplete or failed results
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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