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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 domain-osint.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Inspects a domain's live DNS resolution (IPv4/IPv6), TLS certificate issuer and expiry, and HTTP security headers 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://domain-osint.agentdiet.dev/v1/cert-transparency)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata including issuer and expiry date, and an HTTP security headers grade for the target domain, enabling rapid security posture assessment.
Example use cases
Pre-acquisition domain security audit
“Before we finalize this acquisition, can you check the DNS resolution, TLS certificate details, and HTTP security headers grade for targetcompany.com so I know if their web infrastructure is solid?”
Certificate expiry monitoring alert
“Check openai.com's TLS certificate — I want to know who issued it and when it expires so I can flag it if it's expiring within 30 days.”
Competitor OSINT reconnaissance
“Run a quick security recon on stripe.com — I need their IPv4 and IPv6 DNS records, TLS certificate issuer, and their HTTP security headers grade.”
Technical details
Endpoint
GEThttps://domain-osint.agentdiet.dev/v1/cert-transparency?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, unified OSINT snapshot of a domain's DNS configuration, TLS certificate health, and HTTP security posture in a single call, especially for security audits, pre-acquisition due diligence, or automated monitoring of certificate expiry and header compliance.
Side effects
- Invalid or non-existent domain name returns an error or empty DNS results
- Domain with no TLS certificate may return missing certificate fields
- Unreachable domain may cause timeout or connection error
- Malformed domain string (e.g. missing TLD) returns validation error
- Domains blocking probe traffic 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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