# Domain OSINT, TLS Certificate & Security Headers Recon

> Domain OSINT, TLS Certificate & Security Headers Recon is a paid API for AI agents from shopify-spy.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Performs live DNS resolution, TLS certificate inspection, and HTTP security header grading for a given domain name.

## Facts

- Endpoint: GET https://shopify-spy.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: shopify-spy.agentdiet.dev
- Website: https://shopify-spy.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/shopify-spy-agentdiet-dev-domain-osint-tls-certificate-security-72c5851b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_On7jnafL1SuB-gB2CGnrM

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 shopify-spy-agentdiet-dev-domain-osint-tls-certificate-security-72c5851b
```

Example prompt: Can you check the DNS resolution, TLS certificate issuer and expiry, and HTTP security header grade for anthropic.com?

## When to prefer this

Choose this endpoint when you need a quick, combined OSINT snapshot of a domain's DNS infrastructure, TLS certificate health, and HTTP security posture in a single call. It is especially useful for security reconnaissance, vendor due diligence, pre-deployment audits, or investigating suspicious domains — without needing separate DNS lookup, certificate transparency, and header-analysis tools.

## Known failure modes

- Domain does not exist or fails DNS resolution — returns error or empty DNS records
- Domain has no TLS certificate (HTTP-only) — certificate fields may be null or absent
- Domain is unreachable or times out — returns a timeout or connection error
- Invalid domain format provided — returns validation error
- Security headers not present on the domain — headers section may return empty or low grade

## 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://shopify-spy.agentdiet.dev/v1/whois-lookup)

## Output

Returns live DNS resolution results (IPv4 and IPv6 addresses), TLS certificate metadata (issuer, expiry date, validity), and an HTTP security headers grade assessing the presence and configuration of headers like HSTS, CSP, X-Frame-Options, and others.

## 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/shopify-spy-agentdiet-dev-domain-osint-tls-certificate-security-72c5851b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from shopify-spy.agentdiet.dev](https://www.zero.xyz/host/shopify-spy.agentdiet.dev/llms.txt)