# ONE Engine Array Stats Pack Tier 3

> ONE Engine Array Stats Pack Tier 3 is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0012/call, status unknown (last checked 2026-10-02).

Computes statistical metrics on an input array of values at Tier 3 detail level, returning tier-dependent analytical output.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v2/array-stats-pack/t3?utm_source=zero.xyz
- Price: $0.0012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-array-stats-pack-tier-3-9cf3d691
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_N2j3VZJ2v4s6FRGpaOCVM

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 one-engine-array-stats-pack-tier-3-9cf3d691 -d '<json body>'
```

Example prompt: Can you run the tier-3 array stats pack on this list of values: [12, 45, 7, 89, 34, 56, 23, 78, 90, 11]?

## When to prefer this

Choose this endpoint when you need low-cost, pay-per-call statistical computation on an array of values at the Tier 3 detail level, especially within autonomous agent workflows using x402 micropayments on Base. Prefer it over heavier analytics services when you need simple, fast array statistics without standing up infrastructure or managing subscriptions.

## Known failure modes

- Missing or empty 'values' array returns an error or empty result
- Non-numeric values in the array may cause computation errors or be skipped
- Payment failure via x402 protocol blocks the request
- Malformed JSON input body returns a 400-level error
- Very large arrays may hit size or timeout limits on Cloudflare Workers

## How this service works

Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.

## Output

Returns a JSON object with a 'tier' field (value: 3) and a 'result' field containing tier-3-dependent statistical output computed from the input array, such as descriptive statistics, aggregates, or distribution metrics.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "values": {
   "type": "array"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tier": 3,
  "result": "Tier-dependent output"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-array-stats-pack-tier-3-9cf3d691/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from one-search.one-engine.workers.dev](https://www.zero.xyz/host/one-search.one-engine.workers.dev/llms.txt)