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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 mesh.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 any target 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://mesh.agentdiet.dev/v1/subdomain-scan)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security header grade/assessment for the queried domain.
Example use cases
Pre-acquisition domain security audit
“Before we finalize this acquisition, can you audit acmecorp.com for DNS resolution, TLS certificate issuer and expiry, and their HTTP security header grade so I can flag any security gaps in due diligence?”
SSL expiry monitoring check
“Check the TLS certificate on api.mybusiness.com — I need to know who issued it and exactly when it expires so I can set up a renewal reminder.”
Vendor security posture review
“We're evaluating a new SaaS vendor at vendor-platform.io — can you pull their DNS records, check their SSL cert details, and see how they score on HTTP security headers?”
Technical details
Endpoint
GEThttps://mesh.agentdiet.dev/v1/subdomain-scan?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a combined DNS/TLS/security-header snapshot of a domain in a single call, especially for OSINT workflows, vendor due diligence, certificate expiry checks, or security posture reviews. It is distinct from pure WHOIS/registrar lookups or full port-scanning tools — it focuses specifically on live IPv4/IPv6 resolution, certificate chain metadata, and HTTP security grading.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty DNS records
- Domain has no HTTPS/TLS — TLS certificate fields absent or error
- Target domain times out on HTTP request — security headers grade unavailable
- Invalid domain string input — returns validation error
- Domain is reachable but blocks security header inspection — partial results returned
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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