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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 mcp-compiler.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, and HTTP security header 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://mcp-compiler.agentdiet.dev/v1/whois-lookup)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate details (issuer name, expiry date), and an HTTP security header grade summarizing the security posture of the target domain.
Example use cases
Vendor security due diligence check
“Before we integrate with this new vendor, can you pull the DNS records, TLS certificate issuer and expiry, and HTTP security headers for their domain api.newvendor.com so I can assess their security posture?”
Detect expiring certificate before outage
“Can you check the TLS certificate on shop.mycompany.com and tell me when it expires and who issued it? I want to make sure we renew it before it causes a customer-facing outage.”
Competitive domain security benchmarking
“Pull the security headers and TLS cert details for competitor.com — I want to see their HTTP security grade and DNS setup and compare it against industry best practices.”
Technical details
Endpoint
GEThttps://mcp-compiler.agentdiet.dev/v1/whois-lookup?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need live, real-time reconnaissance on a specific domain combining DNS resolution, TLS certificate inspection, and HTTP security header grading in a single call. It is ideal for security audits, vendor due diligence, certificate expiry monitoring, or competitive analysis where you want structured OSINT without deploying your own scanning infrastructure.
Side effects
- Domain does not exist or is unresolvable — DNS lookup fails with no records returned
- Domain is valid but does not serve HTTPS — TLS certificate data unavailable
- Target server blocks automated probes — incomplete or missing security header data
- Malformed domain input — validation error on the domain parameter
- Upstream timeout if target domain is 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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