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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 x402-audit.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 (issuer, expiry), 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://x402-audit.agentdiet.dev/v1/ssl-audit)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate details (issuer, expiry date, validity status), and an HTTP security header grade reflecting the presence and strength of headers like HSTS, CSP, X-Frame-Options, and related security controls.
Example use cases
Pre-launch domain security check
“Before we go live, can you check our domain acme-corp.com to see if the TLS certificate is valid, who issued it, when it expires, and whether our HTTP security headers pass muster?”
Competitive OSINT on a rival domain
“I need a quick security recon on competitor.com — pull the DNS resolution, TLS cert issuer and expiry, and HTTP security grade so I can see how their infrastructure stacks up.”
Incident response certificate investigation
“We're getting reports of potential spoofing — can you look up the TLS certificate issuer and expiry for suspicious-domain.net and check what IPs it resolves to?”
Technical details
Endpoint
GEThttps://x402-audit.agentdiet.dev/v1/ssl-audit?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need live, real-time OSINT on a domain's DNS resolution, TLS certificate chain, and HTTP security posture in a single call. Prefer it over manual lookups or separate tools when you want a combined security grade alongside cert issuer/expiry and IPv4/IPv6 DNS data without stitching multiple services together.
Side effects
- Domain does not exist or cannot be resolved — DNS lookup failure returned
- Domain is reachable but has no TLS certificate (HTTP-only) — certificate fields may be null or absent
- Domain parameter missing — 400 Bad Request
- Target host times out during live inspection — timeout error
- Payment not made or invalid — HTTP 402 payment required before response is 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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