# validate-email-address-watch

> validate-email-address-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 an email address validation result over time and reports when it changes, returning current validity status, a changed flag, and field-level diffs with before/after values.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/validate-email
- 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/validate-email-address-watch-364804b9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7Hmn3Yvm0ek72RtDhXRmT

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 validate-email-address-watch-364804b9
```

Example prompt: Keep watching the email address user@example.com and let me know immediately if its validation status changes — show me exactly which fields changed and what the before and after values were.

## When to prefer this

Choose this endpoint when you need to detect changes in email validity over time rather than just a one-time check. It is ideal for scheduled monitoring workflows, CRM hygiene pipelines, or any agent that needs to be notified when a previously valid email becomes invalid (or vice versa), including changes in sub-fields like disposability, deliverability, or MX record status. Prefer it over a plain validate-email call when the diff and change-detection logic matters more than the raw current result.

## Known failure modes

- Email address not previously checked — no baseline exists yet, so 'changed' cannot be computed on first call
- Email format is invalid — validation may fail before comparison is possible
- Cached baseline expired — results older than 90 days are purged, losing the comparison baseline
- Payment not completed — x402 payment required before result is returned
- Network or DNS lookup failure during validation — may return error instead of diff

## How this service works

Change watch for validate email address: runs the check and compares it with the result from your previous call for the same email (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 validate email address changes. $0.01 per check.

## Output

Returns the current email validation answer, a boolean 'changed' flag indicating whether any field differs from the previous check (stored up to 90 days), a list of exactly which fields changed with their before and after values, and a timestamp of when the email 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/validate-email-address-watch-364804b9/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)