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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, 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/subdomain-scan)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate details (issuer, expiry date, validity), and an HTTP security header grade/report for the queried domain.
Example use cases
SSL certificate expiry check
“Check when the TLS certificate for stripe.com expires and who issued it — I want to make sure it's not about to lapse.”
Security headers audit for a vendor
“Audit the HTTP security headers for github.com and tell me what grade it gets — I'm doing a vendor security review.”
DNS resolution verification
“Can you do a DNS lookup on openai.com and show me both its IPv4 and IPv6 addresses? I need to verify it resolves correctly.”
Technical details
Endpoint
GEThttps://polymarket-odds.agentdiet.dev/v1/subdomain-scan?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, combined OSINT snapshot of a domain's DNS posture, TLS certificate health, and HTTP security headers in a single call — ideal for security reviews, vendor assessments, or pre-deployment checks. Prefer this over manual tools when you need programmatic, agent-friendly output without standing up your own scanner.
Side effects
- Domain does not exist or fails DNS resolution — returns empty or error result
- Target domain has no TLS certificate (HTTP-only) — certificate fields absent
- Domain blocks automated scanning — may return incomplete or timeout response
- Invalid domain string provided — validation error returned
- Network timeout reaching the target domain — partial or error response
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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Zero review prompt (fires after every successful call)
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