# keyword-extract-watch

> keyword-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's keyword and topic extraction results over time, alerting when they change between scheduled checks.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/site/keywords
- 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/keyword-extract-watch-17e02639
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gEs1TTOpNO9o13fkCZVfV

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 keyword-extract-watch-17e02639
```

Example prompt: Keep an eye on the keywords and topics being extracted from https://example.com/about — call the keyword-extract watch on a schedule and let me know whenever any of them change compared to the last check.

## When to prefer this

Use this endpoint when you need to detect changes in the keywords and topics extracted from a specific webpage over time, rather than doing a one-off extraction. It is ideal for scheduled monitoring workflows where you want to know exactly what changed (field-level before/after diffs) rather than just retrieving current keywords. Prefer this over a plain keyword extraction endpoint when change detection, scheduling, and historical comparison (up to 90 days) are requirements.

## Known failure modes

- URL is unreachable or returns non-200 status — check will fail or return an error
- First call for a URL has no previous result to compare against — changed field may be undefined or false
- Previous result has expired after 90 days — comparison baseline is lost
- Malformed or missing URL input — returns input validation error
- Rate limiting or payment failure — call is rejected with payment-required error

## How this service works

Change watch for keyword 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 keyword and topic extraction from a page changes. $0.01 per check.

## Output

Returns the current keyword and topic extraction result for the URL, a boolean indicating whether it changed since the last call, a list of exactly which fields changed with before and after values, and a timestamp of when the result was last seen. The previous result is 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/keyword-extract-watch-17e02639/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)