# Domain Intel — WHOIS, DNS, Mail Policy, TLS & Subdomains via x402

> Domain Intel — WHOIS, DNS, Mail Policy, TLS & Subdomains 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 data, DNS records, mail policy (SPF/DKIM/DMARC), TLS certificate details, and subdomains — billed per call in USDC via x402 with no signup required.

## Facts

- Endpoint: POST https://dns.halowerk.com/domain/articles/ns-netcup?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-mail-policy-tls-subdomains-via-x402-1239bdc6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AuyQbwV73m1VKDcYeoa_O

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-mail-policy-tls-subdomains-via-x402-1239bdc6 -d '<json body>'
```

Example prompt: Can you pull the full domain intelligence report for example.com — I want WHOIS, DNS records, mail policy, TLS cert details, and any subdomains you can find, all in one shot?

## When to prefer this

Choose this endpoint when you need broad, multi-signal domain intelligence in a single API call without account registration or API key management. It is ideal for on-demand lookups where you need WHOIS, DNS, mail policy, TLS, and subdomains together rather than querying separate specialized services. The pay-per-call x402 micropayment model makes it well-suited for low-volume, ad-hoc agent workflows where subscription costs are not justified. Prefer this over manual DNS tools or multi-service orchestration when an agent needs a comprehensive domain profile in one step.

## Known failure modes

- Invalid or malformed domain name returns a validation error
- Domain does not exist or is not resolvable — WHOIS/DNS sections may return empty or error
- Payment failure via x402 (insufficient USDC balance or wallet not configured) blocks the call
- Baseline object schema mismatch causes request rejection
- Rate limiting or temporary DNS resolver unavailability may cause partial results
- Private/redacted WHOIS (GDPR-protected registrants) returns anonymized registrant data

## 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 response containing: WHOIS registration data (registrar, registrant, expiry dates), full DNS record set, mail policy records (SPF, DKIM, DMARC), TLS/SSL certificate metadata (issuer, validity, SANs), and enumerated subdomains — all for the queried domain.

## 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-mail-policy-tls-subdomains-via-x402-1239bdc6/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)