# 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/subdomain-scan?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-05ee52b2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QN5uPkTuJ1UXkqBjVoGMX

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-05ee52b2
```

Example prompt: Can you run a full OSINT recon on openai.com — check its DNS resolution (IPv4 and IPv6), inspect the TLS certificate issuer and expiry date, and give me an HTTP security headers grade?

## When to prefer this

Choose this endpoint when you need a combined, single-call OSINT snapshot of a domain's DNS posture, TLS certificate health, and HTTP security header configuration — especially useful for security audits, vendor due diligence, threat intelligence, or pre-deployment checks. Prefer this over separate DNS/WHOIS tools when you need TLS and security header data in the same response.

## Known failure modes

- Domain does not exist or fails DNS resolution — returns empty or error for DNS fields
- Domain has no HTTPS/TLS — TLS certificate fields will be absent or null
- Network timeout reaching the target domain — may return partial results
- Invalid domain format input — returns validation error
- Domain blocks automated probes — may return incomplete security header data

## 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/subdomain-scan)

## Output

Returns live DNS resolution results (IPv4/IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity status), and an HTTP security headers assessment/grade 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-05ee52b2/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)