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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-security.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, and HTTP security header grading for a target 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://mcp-security.agentdiet.dev/v1/subdomain-scan)
Output
Returns live DNS resolution data (IPv4/IPv6 addresses), TLS certificate details (issuer, expiry date, validity status), and an HTTP security headers grade for the target domain, enabling security assessment and OSINT profiling.
Example use cases
Security audit before vendor onboarding
“Before we start working with this vendor, can you run a domain recon on stripe.com and tell me if their TLS certificate is valid, who issued it, when it expires, and what their HTTP security grade looks like?”
Detect expired or misconfigured TLS on a client site
“I'm worried one of my client's sites might have a certificate issue — can you check tls.example-client.com for its TLS expiry date, issuer, and whether the DNS is resolving correctly?”
Competitive OSINT on a rival domain
“Can you pull OSINT on openai.com — I want to see the IPv4 and IPv6 DNS records, who issued their TLS cert, when it expires, and how their HTTP security headers score?”
Technical details
Endpoint
GEThttps://mcp-security.agentdiet.dev/v1/subdomain-scan?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, combined DNS + TLS + HTTP security posture check for a single domain without standing up your own scanning infrastructure. It is ideal for OSINT investigations, vendor due diligence, pre-engagement recon, or automated security monitoring pipelines that need structured results via a simple GET call.
Side effects
- Domain does not exist or fails DNS resolution — returns empty or error response
- Target domain blocks inspection requests — partial or no TLS/header data returned
- Invalid domain format supplied — validation error returned
- Network timeout reaching the target domain — timeout or partial results
- Domain resolves but has no HTTPS — TLS fields may be null or absent
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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