# date-extract-watch

> date-extract-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 for changes in extracted date information, returning current values, a changed flag, field-level diffs with before/after values, and last-seen timestamp.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/site/dates
- 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/date-extract-watch-4db962bb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aoKmnlL2iDfz3OoflWtis

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 date-extract-watch-4db962bb
```

Example prompt: Keep an eye on https://example.com/events for me — check it now and let me know if any of the dates on that page have changed compared to the last time you checked.

## When to prefer this

Choose this endpoint when you need to detect changes in date-specific content on a webpage over time, rather than doing a one-off extraction. It is ideal for scheduled monitoring workflows where you want field-level diffs (before/after) rather than just the current state. Prefer it over a plain date extraction endpoint when historical comparison and change alerting are required, and when the 90-day result retention window fits your monitoring cadence.

## Known failure modes

- URL is unreachable or returns a non-200 status, resulting in an error or no date data extracted
- No previous result stored (first call or data expired after 90 days), so 'changed' cannot be computed and baseline is established
- Page has no detectable date content, returning empty or null date fields
- Rate limit or payment failure causes the check not to execute
- Stale cache on the target page means the change is not yet visible at check time

## How this service works

Change watch for date extract: 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 date extraction from a page changes. $0.01 per check.

## Output

Returns the current date extraction result from the page, a boolean 'changed' flag indicating whether dates differ from the previous check (stored up to 90 days), a list of exactly which fields changed with their before and after values, and a timestamp of when the page was last seen.

## 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/date-extract-watch-4db962bb/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)