# VIVARIUM Monitor — Autonomous Watch Feed

> VIVARIUM Monitor — Autonomous Watch Feed is a paid API for AI agents from api.altahub.net, paid per call via x402, $0.55/call, status down (last checked 2026-10-12).

Retrieves paginated monitoring feed items for a given watch ID (e.g. funding rates), settled per-call in USDC on Base via x402

## Facts

- Endpoint: POST https://api.altahub.net/svc/monitor?utm_source=zero.xyz
- Price: $0.55/call
- Payment: x402
- Status: down
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vivarium-monitor-autonomous-watch-feed-012fc90d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jH2shxV3V7FK3gxMuR2Ll

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 vivarium-monitor-autonomous-watch-feed-012fc90d -d '<json body>'
```

Example prompt: Pull the latest 20 items from the funding_rates watch feed on VIVARIUM so I can see what's changed recently.

## When to prefer this

Use this endpoint when you need autonomous, pay-per-call polling of a named monitoring feed (e.g. funding rates) without any human intermediary, and you want settlement in USDC on Base via x402. Prefer this over traditional REST monitoring APIs when operating in a crypto-native agent stack that already handles x402 micropayments.

## Known failure modes

- Unknown or invalid watch_id returns empty items array or error
- Limit exceeding backend cap may be silently clamped or return an error
- Payment failure (insufficient USDC balance) blocks the call with a 402 response
- Network timeout if the autonomous service pipeline is unavailable
- Malformed request body (missing watch_id) likely returns a 400-level error

## How this service works

Pay-per-call machine services settled in USDC on Base via x402. No human in the loop.

## Output

A JSON object with an 'ok' boolean, a 'watch_id' string echoing the requested feed, and an 'items' array containing the most recent monitored events or data points (up to the requested limit) for that watch stream.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer"
  },
  "watch_id": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "ok": true,
 "items": [],
 "watch_id": "funding_rates"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vivarium-monitor-autonomous-watch-feed-012fc90d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.altahub.net](https://www.zero.xyz/host/api.altahub.net/llms.txt)