# extract-json-ld-as-json-watch

> extract-json-ld-as-json-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 web page's JSON-LD structured data for changes, returning current data, a changed flag, field-level diffs with before/after values, and last-seen timestamp.

## Facts

- Endpoint: GET https://page.intel.rallylive.ca/watch/page/json-ld/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-json-ld-as-json-watch-ca0eed56
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_X_h0_SNon2-WTFZ_4hDeF

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-json-ld-as-json-watch-ca0eed56
```

Example prompt: Keep an eye on the JSON-LD structured data at https://example.com/product/123 and let me know as soon as anything changes — I want to see exactly which fields changed and what the before and after values were.

## When to prefer this

Choose this endpoint when you need to detect changes in JSON-LD structured data (schema.org markup) on a specific webpage over time, particularly for SEO monitoring, competitor tracking, or data integrity alerts. It is distinct from a plain extraction endpoint because it compares the current result to your last call and returns a diff with before/after values, making it ideal for scheduled monitoring workflows rather than one-off extractions.

## Known failure modes

- URL is unreachable or returns a non-200 status — check will fail with an error
- Page contains no JSON-LD structured data — returns empty result with no diff
- First-time call for a URL has no previous snapshot to compare against — 'changed' is indeterminate
- Snapshot older than 90 days has expired — comparison resets as if first call
- Malformed JSON-LD on the target page — parsing may fail or return partial data

## How this service works

Change watch for extract json ld 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 the current JSON-LD data extracted from the page, a boolean 'changed' flag indicating whether it differs from the previous call, a field-level diff showing which fields changed with their before and after values, and a timestamp of when the data was last seen. Previous snapshots are 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/extract-json-ld-as-json-watch-ca0eed56/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)