# x402 Endpoint Health Monitor

> x402 Endpoint Health Monitor is a paid API for AI agents from predator-ubuntu.taild9a745.ts.net, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-20).

Runs scheduled preflight/health checks on an x402 endpoint for 30 days and stores a health log you can poll

## Facts

- Endpoint: POST https://predator-ubuntu.taild9a745.ts.net/v1/monitor?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-endpoint-health-monitor-07455554
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jtjcRRYLvM7CTIrBfZ5uo

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 x402-endpoint-health-monitor-07455554 -d '<json body>'
```

Example prompt: Set up health monitoring for my x402 endpoint at https://api.myservice.com/data using a GET request, checking every 30 minutes, so I can poll the health log and catch any 402 challenge failures over the next 30 days.

## When to prefer this

Choose this endpoint when you need ongoing, scheduled health surveillance of an x402-protocol endpoint over a 30-day window, especially to validate that 402 challenges, payment headers, and preflight responses remain correct. It is purpose-built for x402 APIs, making it more relevant than generic uptime monitors when payment-gating behavior is what you need to track.

## Known failure modes

- Invalid or unreachable URL returns an error immediately
- interval_minutes below 15 or above 1440 is rejected by schema validation
- Method not in [GET, POST] enum is rejected
- Endpoint being monitored may block the monitoring agent's IP, causing false negatives
- Payment of $0.03 USDC must succeed or the monitoring job is not created

## How this service works

x402 endpoint health monitoring for 30 days: we run preflight checks on schedule, you poll for the health log

## Output

Returns a monitoring job confirmation and a reference for polling the accumulated health log. The log contains timestamped results of preflight checks run against the target endpoint at the specified interval, including whether the 402 challenge, headers, and payment schema responded correctly. Covers a 30-day window.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "format": "uri"
  },
  "body": {
   "type": "object"
  },
  "method": {
   "enum": [
    "GET",
    "POST"
   ],
   "type": "string"
  },
  "interval_minutes": {
   "type": "integer",
   "maximum": 1440,
   "minimum": 15
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-endpoint-health-monitor-07455554/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from predator-ubuntu.taild9a745.ts.net](https://www.zero.xyz/host/predator-ubuntu.taild9a745.ts.net/llms.txt)