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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 (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 grade.
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/osint)
Output
Returns a structured object containing live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate details (issuer, expiry date, validity), and an HTTP security headers grade reflecting the presence or absence of headers like HSTS, CSP, X-Frame-Options, and similar security directives.
Example use cases
Vendor security posture check
“Before we onboard this new SaaS vendor, can you check the domain security posture for salesforce.com — I want to see their TLS cert issuer, when it expires, and what security headers grade they're running?”
SSL certificate expiry monitoring
“Can you check when the TLS certificate for our production domain mycompany.com expires and who issued it? I want to make sure we're not about to get a surprise expiry.”
Competitor infrastructure recon
“I'd like to do a quick OSINT sweep on openai.com — pull their live IPv4 and IPv6 DNS records, TLS certificate details, and HTTP security headers grade so I can benchmark them.”
Technical details
Endpoint
GEThttps://llms-generator.agentdiet.dev/v1/osint?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, live, all-in-one security snapshot of a domain including DNS, TLS, and HTTP security headers — particularly useful for vendor due diligence, pre-deployment audits, certificate expiry checks, and competitive infrastructure reconnaissance. Prefer this over dedicated DNS-only or SSL-only tools when you want consolidated OSINT in a single call.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty DNS fields
- Domain is unreachable over HTTPS — TLS certificate data unavailable
- Domain has no HTTPS endpoint — security headers grade cannot be computed
- Invalid or malformed domain input — API returns validation error
- Timeout during live probing of the domain — partial results or timeout 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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