# Extract Blockquotes as JSON - Change Watch

> Extract Blockquotes 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 2026-10-13).

Monitors a web page's blockquotes for changes, returning current extracted blockquotes as JSON plus a changed flag and before/after diffs since the last check.

## Facts

- Endpoint: GET https://page.intel.rallylive.ca/watch/page/blockquotes/json?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/extract-blockquotes-as-json-change-watch-6d52de0c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kZjSNntouhaVS8MZnh95c

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-blockquotes-as-json-change-watch-6d52de0c
```

Example prompt: Watch this URL for any changes to its blockquotes and tell me what changed compared to the last time you checked, including the before and after values: https://example.com/press-release

## When to prefer this

Use this endpoint when you need to detect changes specifically in blockquoted content on a web page over time, rather than doing a one-off extraction. It is ideal for scheduled monitoring workflows where you want diff-aware alerts (before/after values) without managing state yourself. Prefer this over the bulk or plain extract endpoints when change detection is the goal and you want the service to handle state retention.

## Known failure modes

- Target URL is unreachable or returns a non-200 status — no blockquotes extracted
- Page has no blockquote elements — returns empty JSON array, changed may be false
- First call for a URL has no prior state to compare — changed flag may be indeterminate or false
- Page uses JavaScript rendering and blockquotes are not in static HTML — content may be missed
- 90-day retention window exceeded — prior state lost, comparison resets

## How this service works

Change watch for extract blockquotes 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 blockquotes extracted as JSON, a boolean 'changed' field indicating whether the content differs from the previous call, a list of fields that changed with their before and after values, and a timestamp of when the content was last seen. Previous state 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/extract-blockquotes-as-json-change-watch-6d52de0c/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)