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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 preflight.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Performs live DNS resolution, TLS certificate inspection, and HTTP security header grading for any 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://preflight.agentdiet.dev/v1/tls-scanner)
Output
Returns live IPv4 and IPv6 DNS resolution results, TLS certificate details including issuer and expiry date, and an HTTP security grade based on the presence and correctness of security headers such as HSTS, CSP, and X-Frame-Options.
Example use cases
Pre-deployment SSL certificate audit
“Before we go live, can you check the TLS certificate on api.mycompany.com — I need the issuer, expiry date, and whether the security headers look solid?”
Competitor security posture research
“I'm doing competitive research — can you scan competitor.io for its DNS records, TLS cert details, and HTTP security header grade so I can benchmark our own setup?”
Incident response domain recon
“We think suspicious-domain.net might be impersonating us — can you pull its live DNS resolution, TLS certificate issuer, and security headers so I can compare them to our legitimate infrastructure?”
Technical details
Endpoint
GEThttps://preflight.agentdiet.dev/v1/tls-scanner?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a combined, single-call OSINT snapshot of a domain's DNS posture, TLS certificate health, and HTTP security configuration — rather than querying separate tools for DNS lookup, SSL checking, and header analysis. Ideal for security recon, pre-deployment audits, vendor risk assessment, or threat intelligence workflows.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty DNS fields
- Domain has no HTTPS/TLS — certificate fields may be absent or null
- Target domain blocks or rate-limits the scanner — may return incomplete results
- Invalid domain format supplied — returns validation error
- Timeout if the target host 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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