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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 onchain-risk.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 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://onchain-risk.agentdiet.dev/v1/cert-transparency)
Output
Returns live IPv4 and IPv6 DNS resolution results, TLS certificate metadata (issuer, expiry date, validity), and an HTTP security header grade reflecting the presence or absence of headers like HSTS, CSP, X-Frame-Options, and others.
Example use cases
Pre-acquisition domain security audit
“We're evaluating acquiring a startup — can you pull the DNS records, TLS certificate details, and HTTP security grade for theirstartup.com so I can assess their security posture?”
Certificate expiry monitoring alert
“Check openai.com and tell me when the TLS certificate expires and who issued it — I want to know if it's close to expiring.”
Vendor security due diligence
“I need to vet a new SaaS vendor before onboarding — can you inspect the DNS resolution, SSL certificate, and security headers for vendor-saas.com and give me a security grade?”
Technical details
Endpoint
GEThttps://onchain-risk.agentdiet.dev/v1/cert-transparency?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, live OSINT snapshot of a domain's DNS posture, TLS certificate health, and HTTP security header configuration — especially for security due diligence, vendor vetting, certificate expiry monitoring, or pre-acquisition recon. Prefer this over general web scrapers when the goal is security-focused metadata rather than page content.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty DNS records
- Domain has no HTTPS/TLS — certificate fields may be null or absent
- Connection timeout if the target host is unreachable or slow
- Invalid domain format supplied — validation error returned
- Firewall or rate-limiting on the target domain blocks header inspection
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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