# Gravatar Check Change Watch

> Gravatar Check 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 Gravatar profile check on a given email address, returning the current result alongside a change flag, field-level before/after diffs, and a last-seen timestamp compared against a 90-day history.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/email/gravatar
- 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/gravatar-check-change-watch-781c68cc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aH2VVsSJ5Ms---dce3xNW

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 gravatar-check-change-watch-781c68cc
```

Example prompt: Monitor the Gravatar profile for john.doe@example.com and tell me if anything has changed since the last time you checked — show me exactly which fields changed and what they were before and after.

## When to prefer this

Use this endpoint when you need to detect changes in a Gravatar profile over time rather than just fetching a one-time snapshot. It is ideal for scheduled monitoring workflows where you want field-level diffs (before/after values) rather than raw current data, and where the 90-day comparison window is sufficient. Prefer this over a plain Gravatar lookup when the agent or user needs to be alerted to profile mutations rather than just reading current state.

## Known failure modes

- Email not previously checked — no baseline exists for comparison, so 'changed' may be indeterminate on first call
- Invalid or malformed email address returns an error
- Gravatar service unavailable or returns no data for the email, resulting in an empty or error result
- 90-day history window exceeded — prior baseline may have expired, resetting comparison state
- Payment not completed (x402 protocol) — call not executed

## How this service works

Change watch for gravatar check: 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 gravatar check changes. $0.01 per check.

## Output

Returns the current Gravatar check result for the email, a boolean 'changed' flag indicating whether anything differs from the prior call (stored up to 90 days), a field-level diff listing which specific fields changed with their before and after values, and a timestamp of when the profile 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/gravatar-check-change-watch-781c68cc/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)