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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 x402-audit.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://x402-audit.agentdiet.dev/v1/cert-transparency)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security header grade reflecting the domain's security posture.
Example use cases
Pre-deployment security audit
“Before we launch, can you audit anthropic.com's TLS certificate details, DNS resolution, and HTTP security headers so I know if there are any issues to fix?”
Vendor domain due diligence
“I need to vet a new vendor — can you pull the TLS cert issuer, expiry date, IPv4/IPv6 DNS records, and HTTP security grade for stripe.com?”
Certificate expiry monitoring check
“Can you check when the TLS certificate for github.com expires and who issued it, along with the current DNS resolution and security header grade?”
Technical details
Endpoint
GEThttps://x402-audit.agentdiet.dev/v1/cert-transparency?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, live, all-in-one domain reconnaissance covering DNS (IPv4/IPv6), TLS certificate details, and HTTP security headers in a single call. Prefer it over manual tooling or separate DNS/TLS APIs when you want a consolidated OSINT snapshot of a domain's network and certificate posture without stitching multiple services together.
Side effects
- Domain does not exist or fails DNS resolution — returns empty or error result
- Domain is unreachable or times out during TLS handshake
- Domain has no HTTPS endpoint, so TLS inspection returns no certificate data
- Invalid domain format provided in query parameter
- Transient network errors during live probe cause incomplete results
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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