# BestBuy.com Downtime Change Watch

> BestBuy.com 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 bestbuy.com is down, returning current status plus a change flag and before/after diff compared to your last call within a 90-day window.

## Facts

- Endpoint: GET https://monitor.intel.rallylive.ca/watch/monitor/is-down/bestbuy-com?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/bestbuy-com-downtime-change-watch-b4866e7a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MkaN7gOyC7wmy5NmR4zeS

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 bestbuy-com-downtime-change-watch-b4866e7a
```

Example prompt: Keep an eye on bestbuy.com for me — run a check now and tell me if the status has changed since last time, including exactly what changed and when it was last seen.

## When to prefer this

Choose this endpoint when you need to detect changes in bestbuy.com availability over time rather than just its current live status. It is ideal for scheduling repeated checks and triggering alerts only when something actually changes, avoiding noise from repeated identical results. Prefer the plain is-down endpoint if you only need a single point-in-time status check without diff comparison.

## Known failure modes

- No previous check stored (first call or >90 days elapsed) — changed comparison unavailable
- bestbuy.com unreachable from monitoring edge — ambiguous down vs. network error
- Payment not provided or invalid — request rejected with 402
- Rate limiting or quota exceeded — check not performed

## How this service works

Change watch for is bestbuy com 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 bestbuy.com, a boolean 'changed' flag indicating whether the result differs from the previous call (stored up to 90 days), a diff of any changed fields with before and after values, and the timestamp when the status was last observed.

## 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/bestbuy-com-downtime-change-watch-b4866e7a/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)