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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 polymarket-odds.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 given 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://polymarket-odds.agentdiet.dev/v1/ssl-audit)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer name, expiry date, validity status), and an HTTP security header grade/assessment (e.g. presence of HSTS, CSP, X-Frame-Options, and similar headers), all reflecting the current live state of the target domain.
Example use cases
Pre-vendor security due diligence
“Before we sign a contract with this SaaS vendor, can you check their domain stripe.com — I want to know their TLS certificate issuer, when it expires, and how their HTTP security headers score?”
SSL expiry monitoring for client site
“Can you check mycompany.com right now and tell me when the TLS certificate is going to expire and who issued it? I want to make sure we're not about to go down.”
Competitor security posture recon
“Run a quick security recon on openai.com — give me the IPv4 and IPv6 DNS records, the TLS cert details, and their HTTP security grade.”
Technical details
Endpoint
GEThttps://polymarket-odds.agentdiet.dev/v1/ssl-audit?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, all-in-one snapshot of a domain's DNS resolution, TLS certificate health, and HTTP security posture without setting up your own scanning infrastructure. It is ideal for OSINT reconnaissance, vendor security checks, certificate expiry monitoring, and quick security audits of third-party domains. Prefer this over general web scrapers (which don't surface TLS or header data) and over dedicated SSL checker tools (which don't include DNS or header grading).
Side effects
- Domain does not exist or fails DNS resolution — returns empty or error for DNS fields
- Domain is unreachable over HTTPS — TLS certificate fields will be absent or error
- Domain blocks automated HTTP requests — security headers may be incomplete
- Invalid domain input (e.g. missing TLD, malformed string) — likely returns validation error
- Domain resolves but has no IPv6 record — IPv6 field will be null or empty
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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