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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 (IPv4/IPv6), TLS certificate inspection (issuer, expiry), and HTTP security header 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://json-repair.agentdiet.dev/v1/cert-transparency)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, expiry date, chain details), and an HTTP security header grade assessing the presence and quality of headers like HSTS, CSP, X-Frame-Options, etc.
Example use cases
Pre-launch security audit of new domain
“Before we go live, can you check openai.com's TLS certificate issuer, when it expires, and whether its HTTP security headers pass muster?”
Vendor due diligence domain check
“We're onboarding a new SaaS vendor at stripe.com — can you pull their DNS records, TLS cert details, and security header grade so I can include it in the vendor risk report?”
Competitor domain OSINT recon
“Can you do a quick recon on cloudflare.com — I want their IPv4 and IPv6 addresses, who issued their TLS cert and when it expires, and an overall HTTP security grade?”
Technical details
Endpoint
GEThttps://json-repair.agentdiet.dev/v1/cert-transparency?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need live, real-time OSINT data about a domain's DNS resolution, TLS certificate health, and HTTP security posture in a single call. Ideal for security audits, vendor risk assessments, pre-launch checks, or competitive reconnaissance where you need certificate transparency and security header grading together without stitching together multiple tools.
Side effects
- Domain does not exist or fails DNS resolution — returns an error indicating unresolvable host
- TLS certificate not present or unreachable HTTPS endpoint — cert fields may be null or return connection error
- Rate limiting or payment failure via x402 — returns 402 Payment Required
- Invalid domain format provided — returns validation error
- Target domain blocks automated probes — may return incomplete or timeout responses
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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