# ONE Engine Array Stats Pack (Tier 7)

> ONE Engine Array Stats Pack (Tier 7) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-02).

Computes statistical metrics over an input array of numeric values, returning tier-7 level analysis results.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v2/array-stats-pack/t7?utm_source=zero.xyz
- Price: $0.005/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-7-44771a98
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DFOzTPt9ojkn_azEAyers

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-7-44771a98 -d '<json body>'
```

Example prompt: Can you run statistical analysis on this array of numbers for me: [4.2, 7.8, 3.1, 9.5, 6.0, 2.4, 8.7]? I need a full stats summary — mean, median, variance, whatever it can give me.

## When to prefer this

Choose this endpoint when you need a fast, cheap ($0.005 USDC) pay-per-call statistical computation on a numeric array without spinning up a data processing library or service. Ideal for autonomous agents that need on-demand descriptive stats as a microservice step in a larger workflow, especially when operating on the Base blockchain with x402 payment infrastructure already in place.

## Known failure modes

- Empty or missing 'values' array returns an error or undefined behavior
- Non-numeric values in the array may cause computation errors or be silently ignored
- Payment failure via x402 protocol returns HTTP 402 before processing begins
- Malformed JSON body results in a 400 bad request error
- Very large arrays may hit Cloudflare Workers size or timeout limits

## How this service works

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

## Output

A JSON object containing the tier identifier (tier: 7) and a result field with tier-dependent statistical output — likely including computed descriptive statistics such as mean, median, variance, standard deviation, min, max, and/or other aggregate metrics derived from the input array.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tier": 7,
  "result": "Tier-dependent output"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-array-stats-pack-tier-7-44771a98/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)