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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 defi-yield.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-23).
Performs live DNS resolution (IPv4/IPv6), TLS certificate inspection (issuer/expiry), and HTTP security header grading for any 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://defi-yield.agentdiet.dev/v1/tls-scanner)
Output
Returns DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata including issuer and expiry date, and an HTTP security header audit with an overall security grade for the target domain.
Example use cases
Pre-launch security audit of own domain
“Before we launch our new site at startupco.io, can you check what TLS certificate is in place, whether it resolves on both IPv4 and IPv6, and give me a grade on the HTTP security headers?”
Competitor domain OSINT research
“I'm doing recon on a competitor — can you pull the TLS certificate issuer and expiry, DNS resolution, and HTTP security header grade for stripe.com?”
Certificate expiry monitoring check
“Can you check whether openai.com's SSL certificate is close to expiring, and also tell me who issued it and what the current IPv4 and IPv6 DNS records look like?”
Technical details
Endpoint
POSThttps://defi-yield.agentdiet.dev/v1/tls-scanner?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a combined DNS + TLS + HTTP security header snapshot of a domain in a single call, especially for OSINT reconnaissance, pre-deployment security checks, or certificate expiry monitoring. It is preferable to manual tooling or separate lookups because it consolidates all three signals in one paid, reliable API call.
Side effects
- Domain does not exist or fails to resolve — DNS lookup returns no records
- Domain is unreachable or times out during live probe — connection error returned
- TLS certificate is invalid or self-signed — may return partial data with error flags
- Malformed domain input (e.g. includes protocol or trailing slash) — validation error
- HTTP endpoint returns no security headers — grade may be very low or unavailable
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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