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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 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://mcp-compiler.agentdiet.dev/v1/dns-recon)
Output
Returns live DNS resolution results (IPv4/IPv6 addresses), TLS certificate details (issuer, expiration date), and an HTTP security header grade for the target domain, enabling rapid infrastructure and security posture assessment.
Example use cases
Vendor security due diligence check
“Before we integrate with this new payments vendor at payvend.io, can you check their DNS resolution, TLS certificate issuer and expiry, and security header grade so I can assess their infrastructure hygiene?”
Monitor certificate expiry for own domain
“Can you check the TLS certificate on mybusiness.com and tell me who issued it, when it expires, and whether it's going to cause any security header warnings?”
Competitive OSINT on rival domain
“I want to do a quick OSINT sweep on competitor.com — pull their IPv4 and IPv6 records, see who issued their SSL cert and when it expires, and give me a security headers grade.”
Technical details
Endpoint
GEThttps://mcp-compiler.agentdiet.dev/v1/dns-recon?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a combined single-call OSINT snapshot covering DNS resolution, TLS certificate validity, and HTTP security headers for any domain — particularly useful for due diligence, security audits, or certificate monitoring workflows where consolidating three checks into one API call at $0.01 is preferable to chaining multiple specialized tools.
Side effects
- Domain does not exist or fails to resolve — DNS lookup returns no records
- TLS certificate absent or not accessible — endpoint cannot inspect certificate details
- HTTP security headers unreachable — target server may block or timeout requests
- Invalid domain format provided — schema validation error returned
- Rate limit or payment failure — HTTP 402 returned requiring payment
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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