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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 github-audit.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Inspects a domain's live DNS resolution (IPv4/IPv6), TLS certificate issuer and expiry, and HTTP security header grade for OSINT and reconnaissance purposes.
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://github-audit.agentdiet.dev/v1/asn-lookup)
Output
Returns live IPv4 and IPv6 DNS resolution results, TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security header grade reflecting the domain's web security posture.
Example use cases
Pre-launch security posture check
“Before we go live, can you inspect the TLS certificate and security headers on our staging domain mybrand-staging.com and tell me if anything looks misconfigured or at risk?”
Vendor due diligence domain audit
“I'm vetting a new vendor — can you pull the DNS resolution, TLS certificate details, and HTTP security grade for their domain acme-vendor.io so I can assess their security posture?”
SSL certificate expiry monitoring
“Can you check when the TLS certificate for openai.com expires and who issued it, so I know whether we need to flag a renewal risk?”
Technical details
Endpoint
GEThttps://github-audit.agentdiet.dev/v1/asn-lookup?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a combined OSINT snapshot of a domain's DNS, TLS certificate health, and HTTP security posture in a single call. It is ideal for security reconnaissance, vendor due diligence, certificate expiry monitoring, and pre-deployment audits. Prefer this over generic DNS lookup tools when you also need TLS issuer/expiry and security header grading together.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty DNS records
- Domain has no HTTPS/TLS endpoint — TLS certificate fields may be null or absent
- Unreachable host (firewall, timeout) — may return partial results or timeout error
- Invalid domain format provided — returns validation error
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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