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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 2026-10-21).
Performs live reconnaissance on a domain by inspecting IPv4/IPv6 DNS resolution, TLS certificate details (issuer, expiry), and HTTP security header grades.
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/dns-whois-tls-recon)
Output
Returns live DNS resolution results (IPv4/IPv6 addresses), TLS certificate details including issuer and expiry date, and an HTTP security headers grade or breakdown for the queried domain.
Example use cases
Vendor security due diligence
“Before we integrate with stripe.com, can you pull their DNS records, check their TLS cert issuer and when it expires, and give me a rundown of their HTTP security headers?”
Certificate expiry monitoring
“Can you check the TLS certificate on github.com and tell me who issued it and when it expires so I can flag if it's coming up for renewal soon?”
Competitor security posture audit
“I want to know how well-secured our competitor's site shopify.com is — check their DNS resolution, TLS certificate details, and HTTP security header grade.”
Technical details
Endpoint
GEThttps://defi-yield.agentdiet.dev/v1/dns-whois-tls-recon?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, all-in-one domain security snapshot covering DNS resolution, TLS certificate health, and HTTP security headers in a single call. It's ideal for due diligence workflows, vendor assessments, certificate expiry monitoring, or OSINT investigations where you want to avoid stitching together multiple tools.
Side effects
- Domain does not exist or fails DNS resolution — empty or error response
- Domain has no HTTPS/TLS — TLS fields may be null or missing
- Timeout if the target domain is unreachable or slow to respond
- Invalid domain input format — validation error returned
- Domain actively blocks external probes — incomplete header data
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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