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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).
Performs live DNS resolution, TLS certificate inspection, and HTTP security header grading for a given domain name.
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/whois-lookup)
Output
Returns live DNS resolution results including IPv4 and IPv6 addresses, TLS certificate details such as issuer and expiry date, and an HTTP security header grade indicating how well the domain is configured for secure communication.
Example use cases
Pre-launch security audit for new domain
“Before we go live, can you check anthropic.com for its TLS certificate details, DNS setup, and security header grade so I know if there are any issues to fix?”
Vendor due diligence domain check
“I need to vet a vendor — can you pull up the DNS records, TLS cert issuer and expiry, and HTTP security grade for stripe.com so I can assess their security posture?”
Detect expiring certificate on monitored site
“Can you check when the TLS certificate for example.com expires and who issued it? I also want to see if their security headers are properly configured.”
Technical details
Endpoint
GEThttps://github-audit.agentdiet.dev/v1/whois-lookup?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, single-call OSINT sweep of a domain covering DNS, TLS, and HTTP security posture simultaneously. It is ideal for security audits, vendor vetting, pre-launch checks, or certificate expiry monitoring without needing to stitch together multiple separate tools.
Side effects
- Domain does not exist or cannot be resolved — DNS lookup fails with no records returned
- TLS certificate is absent or unreachable — certificate fields may be null or empty
- Domain is valid but HTTP server is unresponsive — security headers cannot be retrieved
- Malformed or empty domain string passed — validation error returned
- Timeout during live probe of DNS or TLS endpoint
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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