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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 llms-generator.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown.
Performs live DNS resolution (IPv4/IPv6), TLS certificate inspection (issuer, expiry), and HTTP security header grading for any 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://llms-generator.agentdiet.dev/v1/dns-whois-tls-recon)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, subject, expiry date, validity status), and an HTTP security header grade/audit (presence and configuration of headers like HSTS, CSP, X-Frame-Options, X-Content-Type-Options, etc.) for the queried domain.
Example use cases
Pre-launch security audit for new site
“Before we go live, can you check the DNS resolution, TLS certificate details, and HTTP security header grade for mybrand-staging.com so I can see if anything looks misconfigured?”
Competitor domain security reconnaissance
“Run a domain OSINT recon on shopify.com — I want the IPv4 and IPv6 addresses, the TLS certificate issuer and expiry date, and an HTTP security header grade.”
Certificate expiry monitoring check
“Can you inspect the TLS certificate for api.acmecorp.io and tell me who issued it, when it expires, and whether the security headers look solid?”
Technical details
Endpoint
POSThttps://llms-generator.agentdiet.dev/v1/dns-whois-tls-recon?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a combined, single-call OSINT snapshot covering DNS (IPv4/IPv6), TLS certificate validity and issuer, and HTTP security header grading for any live domain — ideal for security audits, pre-launch checks, competitor recon, or certificate expiry monitoring. Prefer this over separate DNS-only or TLS-only tools when you want all three signals in one response.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty DNS records
- Domain has no TLS/HTTPS endpoint — certificate fields will be absent or null
- Target server is unreachable or times out — endpoint may return a timeout error
- Invalid domain format provided — schema validation error returned
- Domain actively blocks probes — may return incomplete security header data
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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