# Mail Health Report Change Watch

> Mail Health Report 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 health report (A-F grade) on a schedule, detecting and returning exactly which fields changed since the previous check.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/monitor/mail-health
- 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-health-report-change-watch-008a9b67
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sYC_F-ClLhOg1K9CWi0R3

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-health-report-change-watch-008a9b67
```

Example prompt: Keep an eye on the mail health report for example.com and let me know as soon as the grade or any field changes — I want to know exactly what changed and what it was before.

## When to prefer this

Choose this endpoint when you need to be notified only when a domain's mail health report changes, rather than receiving the full report on every call. It is ideal for scheduled agent workflows where you want change-detection semantics (changed flag + field-level diffs) without manually comparing successive results. Prefer this over a plain mail health lookup when you want to track regressions or improvements in email deliverability configuration (SPF, DKIM, DMARC, grade) over time.

## Known failure modes

- Domain not found or invalid domain name provided — returns an error or empty result
- No previous check exists for this domain (first call) — 'changed' may be null or false with no diff
- Domain's mail configuration is unreachable or DNS lookup times out — may return an error or partial result
- Payment not fulfilled — request rejected before check is run
- Results older than 90 days are purged — comparison baseline lost, treated as first call

## How this service works

Change watch for mail health report: 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 health report with an a-f grade in one call changes. $0.01 per check.

## Output

Returns the current mail health report result, a boolean 'changed' flag indicating if anything differs from the previous check (stored up to 90 days), a list of exactly which fields changed with their before and after values, and the timestamp of when the domain was last seen.

## 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-health-report-change-watch-008a9b67/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)