# Domain Intel — Pay-Per-Call Domain Intelligence (x402)

> Domain Intel — Pay-Per-Call Domain Intelligence (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 WHOIS, DNS records, mail policy (SPF/DKIM/DMARC), TLS certificate details, and subdomain enumeration — paid per call in USDC via x402.

## Facts

- Endpoint: POST https://dns.halowerk.com/domain/articles/ns-dns-made-easy?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-pay-per-call-domain-intelligence-x402-ee715ac6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eKI9S7tJREI0WjCTqrN2K

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-pay-per-call-domain-intelligence-x402-ee715ac6 -d '<json body>'
```

Example prompt: Can you pull all the domain intel on stripe.com — WHOIS, DNS records, mail policy, TLS cert, and any subdomains you can find?

## When to prefer this

Choose this endpoint when you need a single, no-signup call that aggregates WHOIS, DNS, mail policy, TLS, and subdomain data for a domain in one shot. Ideal for AI agents that need domain intelligence on-demand without managing API keys or subscriptions — the x402 micropayment model means you pay only for what you query. Prefer this over separate WHOIS-only or DNS-only APIs when you need a holistic domain profile for due diligence, security auditing, or change detection workflows.

## Known failure modes

- Domain not found or unregistered — returns empty or error for non-existent domains
- Rate limiting or payment failure — x402 payment not accepted or insufficient USDC balance
- Invalid domain format — domain exceeds 253 characters or is malformed
- WHOIS privacy shielding — registrant details may be redacted by privacy proxy services
- TLS certificate data unavailable — if domain has no HTTPS endpoint
- Subdomain enumeration limited — passive enumeration may miss dynamically created subdomains
- Baseline records malformed — if observed_at or records array violates schema constraints

## 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 payload covering: WHOIS registration details (registrar, registrant, expiry dates), full DNS record set (A, AAAA, MX, NS, TXT, CNAME, etc.), mail policy records (SPF, DKIM, DMARC), TLS/SSL certificate metadata (issuer, validity, SANs), and a list of discovered subdomains. When a baseline is provided, the response can highlight changes since the previous observation.

## 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-pay-per-call-domain-intelligence-x402-ee715ac6/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)