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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 domain-osint.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 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://domain-osint.agentdiet.dev/v1/tls-scanner)
Output
Returns live DNS resolution data (IPv4 and IPv6 addresses), TLS certificate details (issuer, expiry date, validity status), and an HTTP security header grade/assessment for the target domain, enabling a comprehensive snapshot of the domain's network and security posture.
Example use cases
Vendor security due diligence check
“Before we integrate with this new payment processor, can you scan their domain paymentco.io to check who issued their TLS certificate, when it expires, and whether their HTTP security headers are properly configured?”
Certificate expiry monitoring alert
“I need to check whether api.mycompany.com's TLS certificate is close to expiring — can you pull the cert details including issuer and expiry date, along with their current DNS resolution?”
Competitor domain security audit
“Can you do an OSINT scan on shopify.com to see their DNS resolution, TLS certificate details, and HTTP security grade? I want to benchmark our security headers against theirs.”
Technical details
Endpoint
GEThttps://domain-osint.agentdiet.dev/v1/tls-scanner?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, live, all-in-one recon snapshot of a domain covering DNS, TLS, and HTTP security posture in a single call. Prefer it over manual tools or separate DNS/SSL checkers when building automated security audits, vendor due-diligence pipelines, certificate expiry monitors, or domain OSINT workflows for AI agents. It is especially well-suited for agentic use cases requiring structured, machine-readable output about a domain's security configuration.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty DNS records
- Target domain has no TLS certificate (HTTP-only) — TLS fields may be null or absent
- Domain is unreachable or times out — returns timeout or connection error
- Invalid domain string supplied (malformed input) — returns validation error
- Security headers not present on target — grade reflects missing headers
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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