# Mail Provider Detect Change Watch

> Mail Provider Detect Change Watch is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Monitors a domain's mail provider detection and alerts when the result changes compared to the previous check (retained 90 days).

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/dns/mail-provider
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mail-provider-detect-change-watch-400acd37
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_C-tcvi41jCpmUbGMFubo1

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 mail-provider-detect-change-watch-400acd37
```

Example prompt: Keep an eye on acme.com's mail provider and let me know if it changes — I want to see exactly which fields changed and what the before and after values were.

## When to prefer this

Choose this endpoint when you need scheduled change detection for mail provider on a domain rather than a one-time lookup. It is ideal for automation workflows, alerting pipelines, and compliance monitoring where you need to know not just the current mail provider but whether and exactly how it has changed since the last check. Prefer it over a plain mail-provider-detect endpoint when diffing and change history (90-day retention) matter.

## Known failure modes

- Domain not found or unresolvable — may return null or error for the detection result
- No previous check stored (first call) — 'changed' will be false or undefined with no diff
- DNS lookup timeout — transient failure that may require retry
- Invalid or missing domain parameter — returns validation error
- Stale previous result if 90-day retention window has expired — treated as a fresh first check

## How this service works

Change watch for mail provider detect: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when mail provider detection for a domain changes. $0.01 per check.

## Output

Returns the current mail provider detection result for the domain, a boolean 'changed' flag indicating whether the result differs from the previous check, a list of exactly which fields changed with their before and after values, and the timestamp of when the result was last seen. Previous results are retained for 90 days for comparison.

## 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/mail-provider-detect-change-watch-400acd37/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.rallylive.ca](https://www.zero.xyz/host/intel.rallylive.ca/llms.txt)