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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 sec-intel.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 headers 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://sec-intel.agentdiet.dev/v1/subdomain-scan)
Output
Returns live DNS resolution data (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, expiry date, chain details), and an HTTP security headers assessment/grade for the target domain, all gathered in real time against the live host.
Example use cases
Pre-vendor security due diligence
“Before we integrate with this new payment provider, can you pull the TLS certificate details and HTTP security headers grade for api.newvendor.com so I can assess their security posture?”
SSL expiry monitoring alert
“Check when the TLS certificate for our production domain mycompany.com is set to expire and who issued it — I want to make sure we're not about to have an outage.”
Competitor infrastructure OSINT
“Run a domain OSINT scan on competitor.io — I want to know their IPv4/IPv6 DNS records, their SSL cert issuer, and whether they're using proper security headers like HSTS and CSP.”
Technical details
Endpoint
GEThttps://sec-intel.agentdiet.dev/v1/subdomain-scan?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single-call live recon of a domain's DNS, TLS certificate, and HTTP security posture without deploying your own scanning infrastructure. Ideal for security due diligence, vendor assessments, certificate expiry monitoring, and lightweight OSINT workflows. Prefer this over full vulnerability scanners when you need fast, targeted, read-only intelligence on a domain's security configuration rather than a deep penetration test.
Side effects
- Domain does not exist or has no DNS records — returns empty or error response
- Domain blocks probing — TLS or header data may be unavailable
- Invalid domain format supplied — validation error returned
- Network timeout reaching the target domain — partial or no data returned
- Domain resolves but has no HTTPS — TLS certificate data absent
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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