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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 json-repair.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Performs live DNS resolution, TLS certificate inspection, and HTTP security header grading for any domain name.
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://json-repair.agentdiet.dev/v1/whois-lookup)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security header assessment/grade for the queried domain.
Example use cases
Pre-launch security audit for a new website
“Before we go live, can you pull up the DNS resolution, TLS certificate details, and security header grade for mycompany.com so I can make sure everything is configured correctly?”
Investigating a suspicious third-party domain
“I got an email from vendor-portal.biz — can you run a quick OSINT check on it, including DNS records, who issued the SSL certificate, when it expires, and what security headers it has?”
Monitoring competitor security posture
“Can you check openai.com's TLS certificate issuer, expiry date, IPv4/IPv6 DNS resolution, and HTTP security grade for me?”
Technical details
Endpoint
GEThttps://json-repair.agentdiet.dev/v1/whois-lookup?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, all-in-one OSINT snapshot of a domain's network and security posture — covering DNS, TLS certificate lifecycle, and HTTP security header compliance — without having to call separate DNS, certificate transparency, and header analysis tools individually. Ideal for pre-launch audits, vendor vetting, phishing domain investigation, or continuous security monitoring at $0.01 per call.
Side effects
- Domain does not exist or cannot be resolved — DNS lookup failure returned
- Domain has no TLS certificate — certificate inspection returns null or error
- Target domain is unreachable or times out — network connectivity error
- Malformed domain string input — validation error with 400-level response
- Domain resolves but HTTP request fails — security headers cannot be retrieved
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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