# 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).

Accepts a domain name and 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-transip?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-e0caa09a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WygiqI2Kye2EAmgjCRdB-

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-e0caa09a -d '<json body>'
```

Example prompt: Pull the full domain intelligence report for stripe.com — I want the WHOIS info, all DNS records, SPF/DMARC/DKIM mail policy, TLS certificate details, 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 security, TLS, and subdomains simultaneously — without requiring API key registration. Ideal for pay-as-you-go scenarios, autonomous agents, and security/compliance workflows where per-domain cost ($0.009 USDC) is acceptable. Prefer over manual DNS tools or single-signal APIs when you need all domain signals aggregated. Use the baseline feature when monitoring for DNS drift over time.

## Known failure modes

- Invalid or malformed domain name returns a validation error
- Domain does not exist (NXDOMAIN) may result in empty or partial records
- WHOIS data may be redacted for privacy-protected registrations
- TLS certificate lookup fails if domain has no HTTPS service
- Payment not processed via x402 results in 402 response before data is returned
- Baseline domain mismatch (baseline.domain differs from domain field) may cause comparison errors

## 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 for the queried domain containing: WHOIS registration data (registrar, expiry, owner), full DNS record set (A, MX, NS, TXT, CNAME, etc.), mail policy details (SPF, DKIM, DMARC), TLS/SSL certificate metadata (issuer, validity, SANs), and discovered subdomains. When a baseline is provided, results may indicate changes relative to the prior observed state.

## 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-e0caa09a/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)