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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 token-intel.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://token-intel.agentdiet.dev/v1/asn-lookup)
Output
Returns live DNS resolution results (IPv4/IPv6 addresses), TLS certificate details (issuer, expiry date, validity status), and an HTTP security header grade/breakdown, giving a comprehensive OSINT snapshot of the domain's security posture.
Example use cases
Pre-deployment security audit
“Before we go live, can you audit the TLS certificate details, DNS setup, and HTTP security headers for our domain staging.myapp.io so I know if anything looks risky?”
Vendor security due diligence
“I need to assess the security posture of a potential vendor — can you pull the TLS certificate info, DNS records, and security header grade for vendor-corp.com?”
Monitor certificate expiry for production domain
“Can you check when the TLS certificate for api.mycompany.com expires and who issued it, plus grab any security header grades while you're at it?”
Technical details
Endpoint
GEThttps://token-intel.agentdiet.dev/v1/asn-lookup?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, combined OSINT snapshot of a domain's DNS infrastructure, TLS certificate health, and HTTP security header posture in a single call — ideal for security audits, due diligence workflows, and certificate expiry monitoring. Prefer it over individual DNS or SSL tools when you want all three signals (DNS, TLS, headers) aggregated in one response.
Side effects
- Domain does not exist or fails DNS resolution — returns an error or empty DNS results
- Domain has no HTTPS endpoint — TLS certificate fields may be null or unavailable
- Domain actively blocks scanning — may return incomplete or timeout results
- Invalid domain format input — returns a validation error
- Transient network issues — may return partial data or a timeout error
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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