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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).
Performs live reconnaissance on a domain, returning IPv4/IPv6 DNS resolution, TLS certificate issuer and expiry, and HTTP security header 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://token-intel.agentdiet.dev/v1/whois-lookup)
Output
Returns live DNS resolution data (IPv4 and IPv6 addresses), TLS certificate details (issuer name, expiry date), and an HTTP security header grade/analysis for the target domain.
Example use cases
Vendor security due diligence check
“Before we integrate with this third-party vendor, can you check the TLS certificate details and HTTP security grade for their domain api.vendorcorp.com? I want to know who issued the cert, when it expires, and whether their security headers are solid.”
Monitoring a competitor's infrastructure
“Can you pull the DNS resolution and TLS certificate info for openai.com? I want to see what IPs it's pointing to, who issued the certificate, and when it's set to expire.”
Investigating a suspicious domain
“I received a phishing email from someone claiming to be paypa1.com — can you run an OSINT check on that domain to see what IPs it resolves to, its TLS cert issuer, and its HTTP security header score?”
Technical details
Endpoint
GEThttps://token-intel.agentdiet.dev/v1/whois-lookup?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, all-in-one passive reconnaissance snapshot of a domain covering DNS, TLS certificate health, and HTTP security posture — especially useful for security audits, vendor due diligence, phishing investigation, or infrastructure monitoring without needing to run separate tools for each data type.
Side effects
- Domain does not exist or is unresolvable — returns DNS resolution failure
- Domain has no TLS certificate (HTTP-only) — TLS fields may be empty or null
- Network timeout if the target domain is unreachable
- Invalid domain format provided — returns validation error
- Domain resolves but security headers endpoint is unresponsive — 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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