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

> Domain Intel — WHOIS, DNS, Mail, 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).

Accepts a domain name and returns comprehensive intelligence: WHOIS data, DNS records, mail policy (SPF/DKIM/DMARC), TLS certificate details, and subdomains — paid per call in USDC over x402.

## Facts

- Endpoint: POST https://dns.halowerk.com/domain/articles/ns-nazwa-pl?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-tls-subdomains-via-x402-bc900734
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap___nvktf-FKg3uexRBVOtD

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-tls-subdomains-via-x402-bc900734 -d '<json body>'
```

Example prompt: Can you pull up the full domain intelligence for example.com — I need the WHOIS registration info, DNS records, SPF/DMARC mail policies, TLS certificate details, and any subdomains you can find?

## When to prefer this

Choose this endpoint when you need comprehensive, multi-faceted domain intelligence in a single call without API key registration — especially suitable for ad-hoc agent workflows, one-off security audits, or automation pipelines that require WHOIS, DNS, mail policy, TLS, and subdomain data together. Prefer this over separate specialized tools when cost-per-call economics fit your use case and you want frictionless USDC-based micropayments via x402.

## Known failure modes

- Invalid or non-existent domain returns an error or empty result set
- WHOIS data may be redacted for privacy-protected registrations
- Subdomains list may be incomplete if DNS zone transfer is not permitted
- TLS certificate data unavailable if domain has no HTTPS endpoint
- Payment failure via x402 results in 402 response and no data returned
- Rate limiting or abuse detection may block repeated calls for the same domain

## 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 domain intelligence report covering: WHOIS registration details (registrar, registrant, expiry), full DNS record set (A, MX, NS, TXT, CNAME, etc.), email authentication policies (SPF, DKIM, DMARC), TLS/SSL certificate metadata (issuer, validity, SANs), and 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-mail-tls-subdomains-via-x402-bc900734/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)