# Extract Internal Links as JSON - Change Watch

> Extract Internal Links as JSON - Change Watch is a paid API for AI agents from page.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).

Monitors a webpage's internal links for changes, returning current links, a changed flag, before/after diffs, and last-seen timestamp.

## Facts

- Endpoint: GET https://page.intel.rallylive.ca/watch/page/internal-links/json?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/extract-internal-links-as-json-change-watch-72a9d185
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_i7umC5SYOE4Xhv2vKcaTo

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 extract-internal-links-as-json-change-watch-72a9d185
```

Example prompt: Watch https://example.com/about for any changes to its internal links and let me know if anything has changed since the last time you checked.

## When to prefer this

Choose this endpoint when you need to track whether internal links on a specific webpage have changed over time, and want a structured diff (before/after) rather than just the raw current links. It is ideal for scheduled monitoring workflows where you want to be alerted to site restructuring, new page additions, or link removals. Prefer this over the plain extract endpoint when change detection and historical comparison matter.

## Known failure modes

- URL is unreachable or returns a non-200 response — check or empty result returned
- No previous snapshot exists (first call) — 'changed' may default to false or null with no diff
- Page blocks scrapers (e.g. Cloudflare) — extraction may fail or return incomplete links
- Snapshot older than 90 days has expired — comparison baseline unavailable
- Malformed URL input — request rejected or no result

## How this service works

Change watch for extract internal links as json: runs the check, compares it with the result from your previous call for the same url (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.

## Output

Returns a JSON object containing the current list of internal links found on the page, a boolean 'changed' flag indicating whether the links differ from the previous call, the specific fields that changed with before/after values, and the timestamp of when the page was last seen. Snapshots 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/extract-internal-links-as-json-change-watch-72a9d185/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from page.intel.rallylive.ca](https://www.zero.xyz/host/page.intel.rallylive.ca/llms.txt)