# Website Metadata Change Watch

> Website Metadata 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 website's homepage metadata and reports whether it has changed since the last check, including which fields changed and their before/after values.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/page-meta
- 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/website-metadata-change-watch-a7b21426
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gKo6dA9H1_76zT1N9SZkx

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 website-metadata-change-watch-a7b21426
```

Example prompt: Keep an eye on the homepage metadata for example.com — let me know whenever the title, description, or any other meta tags change compared to the last time you checked.

## When to prefer this

Choose this endpoint when you need scheduled or event-driven change detection for a specific website's homepage metadata, especially when you want a structured diff showing exactly which fields changed and their before/after values. It is preferable over one-off extraction endpoints when persistence and comparison across calls matters, and over bulk endpoints when you are tracking a single domain continuously rather than auditing many at once.

## Known failure modes

- Domain is unreachable or returns a non-200 status — check may fail or return empty metadata
- First call for a domain has no prior snapshot to compare against — 'changed' will be null or false with no diff
- Metadata stored snapshot has expired (older than 90 days) — treated as first call
- Query params for domain/URL not supplied — request will fail or return an error
- Transient network issues reaching the target URL may result in incomplete metadata

## How this service works

Change watch for website metadata: 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 website homepage metadata extraction changes. $0.01 per check.

## Output

Returns the current metadata snapshot for the domain, a boolean indicating whether anything changed since the last call, a list of which specific fields changed with before and after values, and the timestamp of when the previous snapshot was last seen. Snapshots are retained for 90 days per domain.

## 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/website-metadata-change-watch-a7b21426/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)