# Domain Intel — WHOIS, DNS, TLS & Subdomain Lookup via x402

> Domain Intel — WHOIS, DNS, TLS & Subdomain Lookup via x402 is a paid API for AI agents from dns.halowerk.com, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-13).

Given a domain name, returns comprehensive intelligence including WHOIS, DNS records, mail policy, TLS certificate details, and subdomains, billed per-call in USDC via x402.

## Facts

- Endpoint: POST https://dns.halowerk.com/domain/articles/ns-shopify?utm_source=zero.xyz
- Price: $0.009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/domain-intel-whois-dns-tls-subdomain-lookup-via-x402-8e34c012
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ONMpkmYGoSR8jR1WI7hMd

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 domain-intel-whois-dns-tls-subdomain-lookup-via-x402-8e34c012 -d '<json body>'
```

Example prompt: Pull a full domain intel report for shopify.com — I want WHOIS, DNS records, nameservers, mail policy, TLS certificate info, and any subdomains you can find.

## When to prefer this

Choose this endpoint when you need comprehensive, multi-signal domain intelligence in a single call — WHOIS, DNS, mail policy, TLS, and subdomains together — without signing up for an account or managing API keys. Ideal for agents that need on-demand domain recon at low cost ($0.009/call) and can pay programmatically via x402/USDC. Prefer this over standalone WHOIS or DNS tools when you want all signals in one response, or when you need to compare against a DNS baseline to detect changes.

## Known failure modes

- Invalid or malformed domain name returns a 400 or validation error
- Domain does not exist or is unresolvable — partial results or empty record sets returned
- Payment failure via x402 — 402 response if USDC payment is not completed
- Rate limiting or abuse detection may block repeated calls for the same domain
- WHOIS privacy protection may redact registrant details
- TLS lookup may fail for domains without HTTPS
- Subdomain enumeration may be incomplete depending on DNS zone transfer policies

## How this service works

Domain in, WHOIS, DNS, mail policy, TLS certificate and subdomains out. Pay per call in USDC over x402. No signup, no API key.

## Output

Returns a structured report for the queried domain containing: WHOIS registration data (registrar, registrant, dates), full DNS record set (A, MX, NS, CNAME, TXT, etc.), email authentication policy (SPF, DKIM, DMARC), TLS/SSL certificate metadata (issuer, validity, SANs), and a list of discovered subdomains.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domain": {
   "type": "string",
   "maxLength": 253
  },
  "baseline": {
   "type": "object",
   "required": [
    "domain",
    "observed_at",
    "records"
   ],
   "properties": {
    "domain": {
     "type": "string",
     "maxLength": 253
    },
    "records": {
     "type": "array",
     "items": {
      "type": "string",
      "maxLength": 254
     },
     "maxItems": 50
    },
    "observed_at": {
     "type": "string",
     "maxLength": 40
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/domain-intel-whois-dns-tls-subdomain-lookup-via-x402-8e34c012/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dns.halowerk.com](https://www.zero.xyz/host/dns.halowerk.com/llms.txt)