# ONE Engine Array Stats Pack Tier 8

> ONE Engine Array Stats Pack Tier 8 is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0075/call, status unknown (last checked 2026-10-02).

Computes tier-8 statistical analysis on an input array of numeric values, returning tier-dependent descriptive statistics.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v2/array-stats-pack/t8?utm_source=zero.xyz
- Price: $0.0075/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-8-26aea046
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dZauOJ2_3Cb5RtHKi4Rw3

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-8-26aea046 -d '<json body>'
```

Example prompt: Can you run tier-8 array stats on this list of numbers for me: [12.5, 7.3, 44.1, 8.9, 22.0, 15.6, 3.2]?

## When to prefer this

Choose this endpoint when you need a quick, low-cost, pay-per-call statistical computation on a flat array of values without setting up a full data analytics pipeline. It is ideal for autonomous agents that need on-demand descriptive statistics as part of a larger workflow, especially when cost predictability ($0.0075 per call) and x402/Base payment compatibility are required.

## Known failure modes

- Empty or missing 'values' array returns an error or undefined output
- Non-numeric values in the array may cause computation errors or unexpected results
- Payment failure via x402 prevents endpoint access
- Malformed JSON body returns a 400-level error
- Very large arrays may time out on the Cloudflare Worker runtime

## How this service works

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

## Output

A JSON object containing tier-8 statistical outputs for the submitted array, which may include metrics such as mean, median, mode, variance, standard deviation, min, max, and other descriptive statistics depending on the tier.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tier": 8,
  "result": "Tier-dependent output"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-array-stats-pack-tier-8-26aea046/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)