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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 DNS resolution (IPv4/IPv6), TLS certificate inspection (issuer, expiry), 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://workflows.agentdiet.dev/v1/domain-osint)
Output
Returns live IPv4 and IPv6 DNS resolution results, TLS certificate details (issuer, expiry date, validity status), and an HTTP security header grade indicating the presence and correctness of headers like HSTS, CSP, X-Frame-Options, and similar security controls.
Example use cases
Pre-launch security posture check
“Before we go live, can you check openai.com's TLS cert issuer and expiry date, its IPv4 and IPv6 DNS resolution, and give me the HTTP security header grade?”
Vendor due diligence recon
“We're onboarding a new SaaS vendor at vendor-xyz.com — can you pull their DNS records, check when their SSL certificate expires, and tell me how their security headers score?”
Monitoring a competitor's cert health
“Can you check whether anthropic.com's TLS certificate is still valid, who issued it, and when it's set to expire?”
Technical details
Endpoint
GEThttps://workflows.agentdiet.dev/v1/domain-osint?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, single-call recon of a domain's DNS resolution, TLS certificate health, and HTTP security posture — especially useful for vendor due diligence, pre-launch audits, OSINT investigations, or monitoring certificate expiry. Prefer this over manual nslookup/curl workflows or separate security scanning tools when you need consolidated results in one agent-friendly response.
Side effects
- Domain does not exist or fails DNS resolution — returns empty or error result
- Domain has no HTTPS/TLS — certificate fields may be null or absent
- Firewall or rate-limiting on target domain may cause incomplete data
- Invalid or malformed domain input returns a validation error
- Timeout if target domain is very slow to respond
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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