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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 defi-yield.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Performs live reconnaissance on a domain, returning IPv4/IPv6 DNS resolution, TLS certificate issuer/expiry details, and HTTP security header grades.
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://defi-yield.agentdiet.dev/v1/osint)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata including issuer and expiry date, and an HTTP security headers grade reflecting which security headers are present and correctly configured on the target domain.
Example use cases
SSL certificate expiry monitoring
“Check the TLS certificate for stripe.com — I need to know who issued it and when it expires so I can alert if it's about to lapse.”
Security posture audit for vendor
“We're onboarding a new SaaS vendor at vendor.io. Can you pull their DNS resolution, TLS cert details, and HTTP security header grade so I can assess their security posture?”
Suspicious domain investigation
“I got a phishing email linking to suspicious-login.example.net — can you check its DNS records, TLS issuer, and security headers to see if it looks legitimate or sketchy?”
Technical details
Endpoint
GEThttps://defi-yield.agentdiet.dev/v1/osint?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, live, all-in-one recon snapshot of a domain's DNS posture, TLS certificate health, and HTTP security configuration without standing up your own scanning infrastructure. It is ideal for security audits, vendor due diligence, phishing investigation, certificate expiry alerting, or any workflow requiring passive domain reconnaissance at $0.01 per call.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty DNS fields
- Domain has no HTTPS endpoint — TLS certificate details unavailable
- Target server times out during HTTP header inspection — partial or missing security grade
- Invalid domain format provided — validation error returned
- Domain resolves but blocks automated probes — headers may be incomplete
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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