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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 token-intel.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Inspects a target domain's live DNS resolution (IPv4/IPv6), TLS certificate issuer and expiry, and HTTP security header grade in a single call.
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://token-intel.agentdiet.dev/v1/cert-transparency)
Output
Returns live DNS resolution results (IPv4/IPv6 addresses), TLS certificate details (issuer, expiry date, chain info), and an HTTP security headers analysis with a grade — all for the specified domain, reflecting its current state at the time of the call.
Example use cases
Vendor security due diligence check
“Before we integrate with this new SaaS vendor at acmecorp.io, can you check their domain's TLS certificate details — who issued it, when it expires — and grade their HTTP security headers?”
Phishing domain investigation
“I got a suspicious email from support@secure-paypa1.com — can you run a recon on that domain and tell me its DNS resolution, TLS certificate issuer, and security header posture so I can decide if it's legitimate?”
Pre-launch website security audit
“We're about to launch our product at mybrand.dev — can you check the domain's DNS records for both IPv4 and IPv6, confirm the TLS certificate is valid and who issued it, and see how the HTTP security headers score?”
Technical details
Endpoint
GEThttps://token-intel.agentdiet.dev/v1/cert-transparency?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single-call summary of a domain's DNS resolution, TLS certificate validity, and HTTP security posture for OSINT, due diligence, or security auditing purposes — rather than querying a DNS resolver, a certificate transparency log, and a header scanner separately.
Side effects
- Domain does not exist or fails DNS resolution — returns empty or error DNS fields
- Domain has no HTTPS / TLS certificate — certificate fields will be null or indicate absence
- Domain is unreachable (firewall, timeout) — endpoint may return partial results or a timeout error
- Invalid domain input (malformed string) — returns a validation error
- HTTP security header fetch fails if the server refuses connections — headers grade may be unavailable
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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