# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from cve-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.

## Facts

- Endpoint: GET https://cve-intel.agentdiet.dev/v1/whois-lookup?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: cve-intel.agentdiet.dev
- Website: https://cve-intel.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/cve-intel-agentdiet-dev-domain-osint-tls-certificate-security-headers-4fbffc59
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_73so9KFMcLzqOwpyCL-OR

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability cve-intel-agentdiet-dev-domain-osint-tls-certificate-security-headers-4fbffc59
```

Example prompt: Can you check the DNS resolution, TLS certificate details, and HTTP security headers for anthropic.com — I want to know the cert issuer, expiry date, and what security grade the headers get?

## When to prefer this

Use this endpoint when you need a quick, combined OSINT snapshot of a domain's DNS, TLS certificate health, and HTTP security posture in a single call — ideal for security due diligence, vendor assessments, monitoring certificate expiry, or reconnaissance tasks. Prefer it over general WHOIS tools when you specifically need live DNS resolution plus TLS cert details plus HTTP security header grading together.

## Known failure modes

- Domain does not resolve — returns DNS failure or empty IP records
- Domain has no HTTPS/TLS — TLS certificate fields may be null or absent
- Invalid domain format — may return validation error
- Domain is unreachable at time of query — network timeout or connection refused
- Rate limiting or payment failure (HTTP 402) if USDC payment is not properly attached

## 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://cve-intel.agentdiet.dev/v1/whois-lookup)

## Output

Returns live DNS resolution results (IPv4/IPv6 addresses), TLS certificate details (issuer, expiry date, validity status), and an HTTP security header grade/assessment for the queried domain.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "domain"
 ],
 "properties": {
  "domain": {
   "type": "string",
   "minLength": 1,
   "description": "Target domain name (e.g. anthropic.com, openai.com) for DNS, TLS certificate, and security header OSINT"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cve-intel-agentdiet-dev-domain-osint-tls-certificate-security-headers-4fbffc59/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cve-intel.agentdiet.dev](https://www.zero.xyz/host/cve-intel.agentdiet.dev/llms.txt)