# Domain Intel — Pay-Per-Call Domain Intelligence over x402

> Domain Intel — Pay-Per-Call Domain Intelligence over x402 is a paid API for AI agents from dns.halowerk.com, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-12).

Given a domain name, returns WHOIS, 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-mittwald?utm_source=zero.xyz
- Price: $0.009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/domain-intel-pay-per-call-domain-intelligence-over-x402-f6393ecd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8ven91ikOMmj7WGZEu-XG

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-over-x402-f6393ecd -d '<json body>'
```

Example prompt: Can you pull a full domain intelligence report for example.com — I want WHOIS, DNS records, mail policy (SPF/DKIM/DMARC), TLS certificate info, and any subdomains you can find?

## When to prefer this

Choose this endpoint when you need a single, no-signup, pay-as-you-go call that bundles WHOIS, DNS, mail policy, TLS, and subdomain data together. It is ideal for agents doing one-off domain investigations, security triage, or infrastructure audits without committing to a subscription. Prefer it over dedicated WHOIS-only or DNS-only APIs when breadth of domain intelligence in a single round-trip matters and when paying in USDC via x402 is acceptable.

## Known failure modes

- Domain not found or unresolvable — returns empty or error response
- Invalid domain format exceeding 253 characters — validation error
- WHOIS data unavailable for certain TLDs or privacy-protected registrations
- TLS certificate absent if domain has no HTTPS endpoint
- Subdomain enumeration may be incomplete depending on DNS zone exposure
- x402 payment failure if USDC balance is insufficient — request rejected before processing

## 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 comprehensive domain intelligence object including WHOIS registration data, full DNS record set, mail policy records (SPF, DKIM, DMARC), TLS certificate metadata, and discovered subdomains for the queried domain. If a baseline snapshot is provided, it can be used for change-detection comparisons.

## 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-over-x402-f6393ecd/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)