# Halowerk Domain Intel — WHOIS, DNS, TLS & Subdomain Lookup (x402)

> Halowerk Domain Intel — WHOIS, DNS, TLS & Subdomain Lookup (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 WHOIS registration data, DNS records, mail policy (SPF/DKIM/DMARC), TLS certificate details, and subdomains — paid per call in USDC via x402.

## Facts

- Endpoint: POST https://dns.halowerk.com/domain/articles/ns-digitalocean?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/halowerk-domain-intel-whois-dns-tls-subdomain-lookup-x402-d64e5d1c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GRD2HIYAYKtFHZHxGjirC

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 halowerk-domain-intel-whois-dns-tls-subdomain-lookup-x402-d64e5d1c -d '<json body>'
```

Example prompt: Can you pull a full domain intel report for stripe.com — I need the WHOIS info, DNS records, mail policy, TLS certificate, and any subdomains you can find?

## When to prefer this

Choose this endpoint when you need a comprehensive, multi-signal domain intelligence report in a single call — covering WHOIS, DNS, mail policy, TLS, and subdomains — without signing up for an API key. Ideal for agents that need pay-as-you-go domain lookups billed in USDC via x402, especially for security investigations, competitor research, or DNS change monitoring against a known baseline. Prefer alternatives if you only need a single signal (e.g. a dedicated WHOIS-only or DNS-only service) or if you require bulk/batch domain lookups at scale.

## Known failure modes

- Invalid or malformed domain name returns a validation error
- Domain does not exist (NXDOMAIN) may return empty or partial results
- WHOIS data may be redacted for privacy-protected domains
- TLS certificate data unavailable if domain has no HTTPS endpoint
- Baseline comparison fails if baseline object schema is malformed
- Payment failure or insufficient USDC balance blocks the request via x402 402 response
- Rate or quota limits may apply per wallet address

## 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

A structured report containing: WHOIS registration details (registrar, registrant, expiry), full DNS record set (A, MX, NS, TXT, CNAME, etc.), email policy records (SPF, DKIM, DMARC), TLS/SSL certificate metadata (issuer, validity, SANs), and a list of discovered subdomains. Returned as a JSON object in response to the x402-paid POST request.

## 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/halowerk-domain-intel-whois-dns-tls-subdomain-lookup-x402-d64e5d1c/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)