# Domain Intel — MX / domainfactory Baseline Check

> Domain Intel — MX / domainfactory Baseline Check 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 and an optional MX-record baseline, returns WHOIS, DNS, mail policy (SPF/DKIM/DMARC), TLS certificate details, and subdomains — with diff support against a prior MX snapshot.

## Facts

- Endpoint: POST https://dns.halowerk.com/domain/articles/mx-domainfactory?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-mx-domainfactory-baseline-check-ea8fef9c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZqhZ-Q-QQYw-ZexhZ8y8p

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-mx-domainfactory-baseline-check-ea8fef9c -d '<json body>'
```

Example prompt: Pull up the full domain intel for domainfactory.de — WHOIS, DNS, MX records with mail policy, TLS certificate, and subdomains — and flag any differences from these baseline MX records I saw last week: mx1.domainfactory.de (priority 10) and mx2.domainfactory.de (priority 20), observed on 2025-06-01.

## When to prefer this

Choose this endpoint when you need a single-call, pay-per-use snapshot of a domain's full technical posture — WHOIS, DNS, mail policy, TLS, and subdomains — without signing up for a SaaS platform. Especially valuable when you also have a prior MX baseline and want change detection built into the same call. Prefer it over manual DNS tools when working in an automated agent pipeline that can pay $0.009 USDC per lookup via x402.

## Known failure modes

- Domain not found or unresolvable — no DNS data returned
- Invalid domain format (exceeds 253 characters or malformed) — input validation error
- WHOIS rate limiting or registry unavailability — partial results with WHOIS omitted
- TLS certificate absent or expired — certificate section returns null or error flag
- Baseline MX schema invalid (missing required fields: domain, observed_at, records) — request rejected
- Payment failure over x402 — 402 response before any data is returned
- Subdomain enumeration returns empty set for well-protected or sparsely delegated domains

## How this service works

Requires an unauthenticated caller-owned baseline; returns real current NS/MX records, added/removed sets and tri-state target-provider transition. Current DNS comes from one bounded native recursive-resolver query; existing Dossier provides context. Resolver caching may apply; no account ownership or global migration-completion claim. Existing provider patterns are reused without new invented attribution. At most50records,domain253chars,9sbudget; DNSsubquery2s/oneattempt. Unknown provider remai

## Output

Returns a comprehensive domain intelligence report including: WHOIS registrant/registrar/expiry data, full DNS record set, MX exchange list with priorities, mail policy records (SPF, DKIM, DMARC), TLS certificate details (issuer, validity, SANs), discovered subdomains, and — when a baseline is provided — a diff highlighting changes in MX configuration since the baseline was observed.

## 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": "object",
      "required": [
       "exchange",
       "priority"
      ],
      "properties": {
       "exchange": {
        "type": "string",
        "maxLength": 254
       },
       "priority": {
        "type": "integer",
        "maximum": 65535,
        "minimum": 0
       }
      },
      "additionalProperties": false
     },
     "maxItems": 50
    },
    "observed_at": {
     "type": "string",
     "maxLength": 40
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/domain-intel-mx-domainfactory-baseline-check-ea8fef9c/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)