# Content Stats Change Watch

> Content Stats 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 webpage's content statistics and alerts when they change compared to the previous check, returning changed fields with before/after values.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/page/summary-stats
- 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/content-stats-change-watch-48dbd64d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4JwDwkzWhMS7Z5eFOQs4r

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 content-stats-change-watch-48dbd64d
```

Example prompt: Keep an eye on https://example.com/blog for me — check it on a schedule and tell me whenever its content statistics change, showing me exactly what changed and what the old vs. new values were.

## When to prefer this

Choose this endpoint when you need scheduled or periodic monitoring of content statistics for a specific webpage and want a built-in diff against the last check rather than doing your own state management. It is ideal for change-alerting workflows, SEO monitoring, and content audit automation where you want before/after field-level comparisons without storing snapshots yourself. Prefer it over raw content-stat fetches when historical comparison and change detection are the primary goal.

## Known failure modes

- URL is unreachable or returns an error — check may fail or return no stats
- No previous result exists yet (first call) — changed will be false or undefined with no before values
- URL not supplied or malformed — request will be rejected
- 90-day history window exceeded — previous snapshot not available for comparison
- Target page blocks the crawling agent — content stats may be incomplete or empty

## How this service works

Change watch for content stats: runs the check and compares it with the result from your previous call for the same url (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 content statistics for a page changes. $0.01 per check.

## Output

Returns the current content statistics for the given page URL, a boolean indicating whether anything changed since the last call, an enumeration of exactly which fields changed with their before and after values, and a timestamp of when the page was last seen. Results from the previous call 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/content-stats-change-watch-48dbd64d/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)