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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 alpha-stream.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, 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://alpha-stream.agentdiet.dev/v1/subdomain-scan)
Output
Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata including issuer and expiry date, and an HTTP security header grade assessing the presence and configuration of headers like HSTS, CSP, and X-Frame-Options for the target domain.
Example use cases
Pre-acquisition domain security audit
“Before we finalize acquiring that startup, can you scan their domain acmecorp.io and tell me about its DNS setup, whether the TLS certificate is current and who issued it, and how their HTTP security headers look?”
SSL certificate expiry monitoring
“Check anthropic.com's TLS certificate right now — when does it expire, who issued it, and is there anything concerning about their DNS resolution or security headers?”
Vendor security due diligence
“I need to vet a new vendor before onboarding them. Can you pull the DNS records, TLS cert details, and HTTP security header grade for thirdpartyvendor.com?”
Technical details
Endpoint
GEThttps://alpha-stream.agentdiet.dev/v1/subdomain-scan?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need live, real-time OSINT on a domain's DNS configuration, TLS certificate health, and HTTP security posture in a single call. It is ideal for security audits, vendor due diligence, pre-acquisition checks, or monitoring certificate expiry — especially when you want both IPv4/IPv6 resolution and TLS issuer details together rather than querying separate DNS or SSL tools.
Side effects
- Domain does not exist or fails DNS resolution — returns error or empty DNS fields
- Domain has no HTTPS/TLS — TLS certificate fields may be absent or null
- Firewall or rate limiting blocks live probing — may return incomplete results
- Invalid domain string input — returns validation error
- Target server unreachable — timeout or connection refused
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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