# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from whale-momentum.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://whale-momentum.agentdiet.dev/v1/cert-transparency?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: whale-momentum.agentdiet.dev
- Website: https://whale-momentum.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/whale-momentum-agentdiet-dev-domain-osint-tls-certificate-security-ed22f141
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SkX3bdxxrzHwIZNYdA9mT

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 whale-momentum-agentdiet-dev-domain-osint-tls-certificate-security-ed22f141
```

Example prompt: Can you run a full domain security recon on openai.com — I want to see its DNS resolution (IPv4 and IPv6), TLS certificate issuer and expiry date, and how its HTTP security headers grade out?

## When to prefer this

Choose this endpoint when you need a combined DNS + TLS + HTTP security header snapshot of a domain in a single call, especially for OSINT investigations, security audits, vendor due diligence, or phishing domain analysis. It is preferable over separate DNS or SSL checker tools when you want all three data dimensions without multiple API calls.

## Known failure modes

- Domain does not exist or fails DNS resolution — returns error or empty DNS records
- Domain is unreachable or times out — TLS/HTTP checks may return null or timeout error
- Domain exists but has no HTTPS — TLS certificate fields will be absent
- Malformed domain input — validation error returned
- Rate limiting or network-level block on the target domain — incomplete results

## 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://whale-momentum.agentdiet.dev/v1/cert-transparency)

## Output

Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, validity period, expiry date), and an HTTP security header grade assessing the domain's security posture.

## 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/whale-momentum-agentdiet-dev-domain-osint-tls-certificate-security-ed22f141/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from whale-momentum.agentdiet.dev](https://www.zero.xyz/host/whale-momentum.agentdiet.dev/llms.txt)