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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 mcp-security.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Performs live reconnaissance on a domain by resolving its IPv4/IPv6 DNS records, inspecting TLS certificate issuer and expiry, and grading its HTTP security headers.
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://mcp-security.agentdiet.dev/v1/tls-scanner)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security headers assessment including presence/absence of headers like HSTS, CSP, X-Frame-Options, and an overall security grade.
Example use cases
Pre-deployment security check
“Before we go live, can you scan stripe.com and tell me its TLS certificate issuer, expiry date, and whether its HTTP security headers are properly configured?”
Vendor security due diligence
“I'm evaluating a new SaaS vendor at vendor-portal.io — can you pull their DNS resolution, check their TLS cert details, and grade their HTTP security headers so I can assess their security posture?”
Monitor competitor infrastructure
“Can you do a domain OSINT recon on openai.com and tell me their IPv4/IPv6 addresses, who issued their TLS certificate and when it expires, and how their security headers score?”
Technical details
Endpoint
GEThttps://mcp-security.agentdiet.dev/v1/tls-scanner?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, all-in-one passive reconnaissance snapshot of a domain covering DNS, TLS certificate validity, and HTTP security headers in a single call. It is ideal for pre-deployment audits, vendor security assessments, or lightweight OSINT without setting up a full security scanning pipeline. Prefer it over dedicated DNS or SSL tools when you want a combined security posture overview rather than deep protocol-layer analysis.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty DNS records
- Domain has no TLS certificate (HTTP-only) — TLS fields may be null or an error is returned
- Domain is unreachable or times out — connection timeout error
- Malformed or missing domain parameter — 400 Bad Request
- Payment not provided or insufficient — 402 Payment Required
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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