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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 DNS resolution (IPv4/IPv6), TLS certificate inspection (issuer, expiry), and HTTP security header grading for a given 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://mcp-security.agentdiet.dev/v1/asn-lookup)
Output
Returns live DNS resolution results (IPv4/IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security header grade/analysis for the queried domain.
Example use cases
Pre-launch security audit for SaaS
“Before we go live, can you check openai.com's TLS certificate details and HTTP security header grade so I can benchmark what a well-secured site looks like?”
Vendor due diligence OSINT scan
“We're onboarding a new vendor at vendor-acme.com — can you pull their DNS resolution, check if their TLS cert is valid and who issued it, and flag any missing security headers?”
Phishing domain investigation
“I think suspicious-login-paypal.com might be a phishing site — can you check its DNS IPs, TLS certificate issuer and expiry, and HTTP security posture to help me assess the risk?”
Technical details
Endpoint
GEThttps://mcp-security.agentdiet.dev/v1/asn-lookup?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need live, combined DNS + TLS + security header intelligence on a domain in a single call, particularly for OSINT investigations, vendor due diligence, phishing triage, or pre-deployment security benchmarking. Prefer it over manual tools like dig/nslookup or SSL labs when you need programmatic, structured output consumable by an agent pipeline.
Side effects
- Domain does not exist or fails DNS resolution — empty or error response
- Domain has no TLS certificate — certificate fields absent or null
- Target domain blocks HTTP requests — security headers cannot be retrieved
- Invalid domain format provided — validation error returned
- Network timeout reaching the target domain — partial or error response
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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