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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).
Inspects a domain's live DNS resolution (IPv4/IPv6), TLS certificate issuer/expiry, and HTTP security header grade in a single call.
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/ssl-audit)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata including issuer and expiration date, and an HTTP security header audit with an overall security grade for the target domain.
Example use cases
Pre-vendor security due diligence
“Before we integrate with this third-party payment processor, can you audit paymentco.io — I need its DNS resolution, TLS certificate issuer, expiry, and HTTP security grade to include in our vendor risk report?”
Certificate expiry monitoring alert
“Check the TLS certificate on api.mycompany.com for me — I want to know exactly when it expires and who issued it so I can make sure we renew before it lapses.”
Competitive infrastructure reconnaissance
“Run a domain OSINT scan on competitor.com and tell me their resolved IP addresses, who issued their SSL cert, and whether their HTTP security headers are properly configured.”
Technical details
Endpoint
GEThttps://defi-yield.agentdiet.dev/v1/ssl-audit?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a combined, single-call snapshot of a domain's DNS posture, TLS certificate health, and HTTP security header configuration for OSINT, vendor risk assessment, or security auditing purposes. It is especially useful when you want to avoid stitching together separate DNS lookup, certificate checker, and security header scanner tools.
Side effects
- Domain does not exist or fails DNS resolution — returns error indicating unresolvable domain
- Domain has no TLS/HTTPS — certificate fields may be null or absent
- Network timeout reaching the target domain — returns connectivity error
- Invalid domain format supplied — returns schema validation error
- Domain is behind a firewall that blocks probes — incomplete or partial results returned
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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