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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 serp-extract.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://serp-extract.agentdiet.dev/v1/dns-recon)
Output
Returns live DNS resolution data including IPv4 and IPv6 addresses, TLS certificate details (issuer, expiry date), and an HTTP security header audit/grade for the specified domain.
Example use cases
Vendor security due diligence check
“Before we integrate with this third-party vendor, can you check the DNS resolution, TLS certificate details, and HTTP security header grade for their domain vendor-corp.com?”
Monitor certificate expiry for client site
“Can you check when the TLS certificate for myclientsite.io expires and who issued it, so I know if they're at risk of it lapsing soon?”
OSINT recon on suspicious domain
“I need to investigate this suspicious domain phishy-lookalike.net — can you pull its DNS records, TLS cert issuer, and security header score to see if anything looks off?”
Technical details
Endpoint
GEThttps://serp-extract.agentdiet.dev/v1/dns-recon?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, all-in-one OSINT snapshot of a domain's network and security posture — combining DNS, TLS, and HTTP security headers in a single call — rather than querying separate DNS lookup or SSL checker tools individually. Ideal for security due diligence, reconnaissance on unknown domains, or certificate expiry monitoring.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty records
- Domain has no HTTPS/TLS — certificate fields will be absent or null
- Target domain is unreachable or times out — may return partial results
- Invalid or malformed domain input — returns validation error
- Domain blocks automated probing — may return incomplete security header data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | Maximum number of items to return per page (1-100) |
| cursor | string | Opaque pagination cursor for fetching the next page |
| 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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