# CMS Detect Change Watch

> CMS Detect Change 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 domain's CMS and platform detection results over time, returning current values, a changed flag, and field-level before/after diffs since the last check.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/site/cms
- 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/cms-detect-change-watch-39d96125
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7BX5lWcKaEZfSvb2nn3dJ

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 cms-detect-change-watch-39d96125
```

Example prompt: Keep an eye on example.com and let me know if its CMS or platform detection ever changes — I want to see exactly which fields changed and what the old vs new values were.

## When to prefer this

Choose this endpoint when you need to detect and be notified of changes to a site's CMS or technology platform over time, rather than just knowing the current state. It is ideal for scheduled polling workflows where you want field-level diffs with before/after values without managing your own state — the service stores the last result for 90 days. Prefer it over a one-shot CMS detection call when change detection and auditability are the goal.

## Known failure modes

- Domain not reachable or returns non-200 status — detection may fail or return partial results
- First call for a domain has no prior result to compare against — 'changed' will be null or false with no diff
- Domain resolves but CMS is undetectable — returns null/unknown CMS with no change data
- Prior result expired after 90 days — treated as a fresh first call with no diff available
- Malformed domain input — returns validation error

## How this service works

Change watch for cms detect: runs the check and compares it with the result from your previous call for the same domain (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 cms and platform detection changes. $0.01 per check.

## Output

Returns the current CMS and platform detection result for the domain, a boolean 'changed' flag indicating whether results differ from the previous call, a list of changed fields each with before and after values, and a timestamp of when the result was last seen. Previous results 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/cms-detect-change-watch-39d96125/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)