# Domain Intel MX Mailbox Org — Pay-Per-Call MX Record Intelligence

> Domain Intel MX Mailbox Org — Pay-Per-Call MX Record Intelligence 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).

Returns MX record intelligence for a domain, including mail exchange hosts, priorities, and optionally compares against a baseline snapshot, paid per-call in USDC via x402.

## Facts

- Endpoint: POST https://dns.halowerk.com/domain/articles/mx-mailbox-org?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-mx-mailbox-org-pay-per-call-mx-record-intelligence-e7d60325
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__ZBrUPUrLF9GwgZ0GOkH7

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-mailbox-org-pay-per-call-mx-record-intelligence-e7d60325 -d '<json body>'
```

Example prompt: Look up the current MX records for articles.mx-mailbox.org and compare them against my baseline snapshot from 2024-11-01 where the exchange was mail.mx-mailbox.org with priority 10.

## When to prefer this

Choose this endpoint when you need MX-specific mail exchange record data for a domain and want no-signup, pay-per-call access via x402 USDC micropayment. It is ideal for one-off or infrequent lookups where maintaining an API subscription is unnecessary, or for agents that need to compare current MX state against a known historical baseline to detect drift. Prefer it over general DNS APIs when the use case is narrowly focused on mail routing configuration.

## Known failure modes

- Invalid or malformed domain name returns a validation error
- Domain does not exist or has no MX records returns empty or not-found response
- Baseline schema mismatch (missing required fields) causes a 400-level error
- x402 payment failure or insufficient USDC balance prevents the call from completing
- Network timeout reaching authoritative DNS servers may return a transient error

## 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

The agent receives structured MX record data for the queried domain, including the list of mail exchange hostnames and their associated priority values. If a baseline is provided, the response includes a comparison indicating whether records have changed, been added, or removed since the baseline observation timestamp.

## 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-mailbox-org-pay-per-call-mx-record-intelligence-e7d60325/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)