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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 workflows.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Performs live reconnaissance on a domain including IPv4/IPv6 DNS resolution, TLS certificate issuer and expiry details, and HTTP security headers grading.
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://workflows.agentdiet.dev/v1/ssl-audit)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate details including issuer, subject, and expiry date, and an HTTP security headers analysis with a security grade — all fetched in real-time from the target domain.
Example use cases
Vendor security due diligence check
“Before we integrate with this new payment vendor at checkout.newvendor.com, can you pull their DNS records, TLS certificate info, and HTTP security header grade so I can assess their security posture?”
SSL certificate expiry monitoring
“Can you check when the TLS certificate for api.mycompany.com expires and who issued it? I want to make sure we're not about to have an unexpected outage.”
Competitive domain OSINT research
“I'm doing research on openai.com — can you show me their live DNS resolution, SSL certificate authority, and whether they have proper security headers like HSTS or CSP in place?”
Technical details
Endpoint
GEThttps://workflows.agentdiet.dev/v1/ssl-audit?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single, unified view of a domain's DNS posture, TLS certificate health, and HTTP security header compliance without setting up separate DNS, WHOIS, or SSL tooling. It is especially useful for security due diligence, vendor assessments, certificate expiry monitoring, or competitive OSINT workflows where a real-time live probe is required.
Side effects
- Domain does not exist or has no DNS records — returns empty or error response
- Domain blocks external HTTP probes, preventing security header retrieval
- TLS handshake failure if domain has an expired or invalid certificate before scan
- Invalid domain string input (e.g. containing spaces or unsupported characters) — validation error
- Rate limiting or payment failure due to x402 micropayment not being processed
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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