# Vercel.com Down Change Watch

> Vercel.com Down 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 vercel.com is down and returns the current status, whether it changed since the last check, and the before/after diff of changed fields.

## Facts

- Endpoint: GET https://monitor.intel.rallylive.ca/watch/monitor/is-down/vercel-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/vercel-com-down-change-watch-1eddc3b3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OxVxru2HvtGlmCGNwY8AC

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 vercel-com-down-change-watch-1eddc3b3
```

Example prompt: Keep an eye on whether vercel.com is down and let me know if anything has changed since the last time you checked — I want to see what flipped and when.

## When to prefer this

Use this endpoint when you need to detect *changes* in vercel.com's availability rather than just a point-in-time status. It is ideal for scheduling periodic polls and receiving a diff of what changed, making it more useful than a plain is-down check for alerting workflows where you only care about transitions.

## Known failure modes

- Network unreachable to vercel.com — may return inconclusive or error status
- No previous check stored (first call) — 'changed' flag may be null or baseline-only
- Payment not processed — request rejected before check runs
- Stale comparison if previous result is older than 90 days — history expired

## How this service works

Change watch for is vercel 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 answer for vercel.com, a boolean 'changed' flag indicating whether the result differs from the previous call (stored for 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/vercel-com-down-change-watch-1eddc3b3/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)