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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 domain-osint.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 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://domain-osint.agentdiet.dev/paid)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity), and an HTTP security headers grade/assessment for the target domain, structured as a JSON object.
Example use cases
Pre-launch security audit for a new site
“Before we go live, can you check domain-osint.agentdiet.dev for its DNS resolution, TLS certificate issuer and expiry date, and give me a security headers grade so I know what needs fixing?”
Monitoring a competitor's SSL expiry
“Can you look up the TLS certificate details for stripe.com — specifically who issued it and when it expires — along with its current DNS IPs and HTTP security header grade?”
Phishing domain investigation
“I got a suspicious link pointing to paypa1.com — can you run a DNS and TLS certificate recon on it so I can see what IPs it resolves to, who issued its cert, and whether it passes basic security header checks?”
Technical details
Endpoint
GEThttps://domain-osint.agentdiet.dev/paid?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, all-in-one passive OSINT snapshot of a domain covering DNS, TLS, and HTTP security posture in a single API call. Ideal for security auditors, threat analysts, or developers who need to verify a domain's infrastructure and certificate health without standing up their own toolchain. Prefer this over raw DNS lookup tools when you also need TLS certificate issuer/expiry and security header grading in the same response.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty DNS results
- Domain has no TLS certificate (HTTP-only) — TLS fields may be null or missing
- Domain is unreachable/times out during live probe — returns timeout or connection error
- Invalid or malformed domain input — returns validation error
- Rate limiting or payment failure via x402 — returns 402 Payment Required
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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