# dns-mx-via-mullvad-watch

> dns-mx-via-mullvad-watch is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).

Monitors MX DNS records for a domain via Mullvad DNS, detecting changes compared to the previous check and returning before/after diffs with a changed flag.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/watch/dns/mx/via/mullvad?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-mx-via-mullvad-watch-ba666dbc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qcekc99RZUPqdX0DSI8Ni

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 dns-mx-via-mullvad-watch-ba666dbc
```

Example prompt: Watch the MX records for example.com via Mullvad and tell me if anything has changed since the last time we checked — show me the before and after values if it did.

## When to prefer this

Choose this endpoint when you specifically want to detect changes in MX (mail exchanger) DNS records as seen through Mullvad's DNS resolver, which may reveal geo- or provider-specific DNS views different from Cloudflare or Google. Ideal for scheduled monitoring workflows where you need diff-aware responses (before/after) rather than just a raw lookup. Prefer over plain MX lookup endpoints when change detection and alerting are the primary goal.

## Known failure modes

- Domain not found or NXDOMAIN — returns empty record set with no change data
- First-ever call for a domain has no prior state to compare against — 'changed' may be indeterminate or false
- Mullvad DNS resolver unavailable — request may fail or time out
- Invalid or malformed domain input — may return error or empty result
- No MX records exist for the domain — returns empty answer with changed flag based on prior state

## How this service works

Change watch for dns mx via mullvad: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.

## Output

Returns the current MX records as resolved via Mullvad DNS, a boolean 'changed' flag indicating whether the result differs from the previous call for the same domain, a list of fields that changed with before and after values, and a timestamp of when the record was last seen. Results from prior checks are retained for 90 days.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dns-mx-via-mullvad-watch-ba666dbc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dns.intel.rallylive.ca](https://www.zero.xyz/host/dns.intel.rallylive.ca/llms.txt)