# Website Scraper Change Watch

> Website Scraper 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 scraped web page for changes by comparing the current scrape result against a stored previous result, returning what changed and when.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/scrape
- 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-scraper-change-watch-c4cd5c62
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IRbheNFQOdM9uBzKb-_aU

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-scraper-change-watch-c4cd5c62
```

Example prompt: Keep an eye on https://example.com/pricing for me — check it now and tell me if anything has changed since the last time you looked, and exactly what fields are different.

## When to prefer this

Use this endpoint when you need to periodically poll a specific web page and be informed of exactly what changed between calls, rather than just retrieving the current page content. It is ideal for scheduled monitoring workflows where the agent needs to react to changes (price updates, availability changes, policy edits) without storing and diffing page content externally. Prefer this over a plain scrape endpoint when the delta — what changed, which fields, before/after — is more important than the raw content.

## Known failure modes

- URL is unreachable or returns a non-200 status — scrape fails with an error response
- First-time call for a URL has no previous result to compare against — returns current result with no change data
- Previous result has expired (older than 90 days) — treated as first-time call
- URL returns dynamic/JavaScript-rendered content that can't be statically scraped — may return incomplete or empty results
- Rate limiting or access restrictions on the target website — scrape may fail or return blocked content

## How this service works

Change watch for website scraper: 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 scrape a website page changes. $0.01 per check.

## Output

Returns the current scrape result for the URL, a boolean 'changed' flag indicating whether the page differs from the previous call, an itemized list of which fields changed with before and after values, and a timestamp of when the page was last seen. The previous result is retained for 90 days.

## 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-scraper-change-watch-c4cd5c62/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)