# CBC.ca Downtime Change Watch

> CBC.ca Downtime Change Watch is a paid API for AI agents from monitor.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-02).

Monitors whether CBC.ca is down, compares the current status with the previous check result, and returns what changed and when.

## Facts

- Endpoint: GET https://monitor.intel.rallylive.ca/watch/monitor/is-down/cbc-ca?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cbc-ca-downtime-change-watch-07e8644c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VA547yK3pXAdyIN3la7os

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 cbc-ca-downtime-change-watch-07e8644c
```

Example prompt: Check if CBC.ca is currently down, and let me know whether its status has changed since the last time you checked — show me what changed and when it was last seen.

## When to prefer this

Use this endpoint when you need change-detection semantics — not just the current status, but whether it has changed since your last poll — and you want to avoid false alerting by comparing diffs. Ideal for scheduled monitoring workflows where you want to be notified on transitions (up→down or down→up) rather than on every check.

## Known failure modes

- No previous result stored (first call or data expired after 90 days) — changed field may be null or false by default
- CBC.ca check itself may fail if the target is unreachable or the monitoring service has connectivity issues
- Stale comparison if more than 90 days have passed since last call — historical baseline is lost

## How this service works

Change watch for is cbc ca down: runs the check, compares it with the result from your previous call for the same query (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 up/down status of CBC.ca, a boolean 'changed' field indicating whether the status differs from the previous call (stored up to 90 days), a list of fields that changed with before/after values, and the timestamp of when the status 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/cbc-ca-downtime-change-watch-07e8644c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from monitor.intel.rallylive.ca](https://www.zero.xyz/host/monitor.intel.rallylive.ca/llms.txt)