# ONE Engine Array Reverse (Top 10)

> ONE Engine Array Reverse (Top 10) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-02).

Reverses a JSON array and returns the last 10 elements (tail) of the reversed result.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/array/reverse/t10?utm_source=zero.xyz
- Price: $0.03/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-reverse-top-10-fb79fc96
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EJY5C-BqYc_f48liMYNgQ

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-reverse-top-10-fb79fc96 -d '<json body>'
```

Example prompt: Reverse this array of values and give me the top 10 from the reversed result: [100, 42, 7, 88, 3, 56, 19, 74, 61, 5, 30, 99].

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call array reversal with automatic tail-slicing (top 10) on the Base blockchain via x402 micropayments. Ideal for AI agents that need quick list inversion without standing up their own compute, especially when processing short arrays (≤1000 items) and only need the trailing segment of the reversed result.

## Known failure modes

- Array exceeds 1000 items — request rejected
- Missing required 'values' field — validation error
- Malformed JSON array input — parse error
- Payment failure via x402 on Base — 402 response before processing
- Invalid offset or size integer — unexpected slice result

## How this service works

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

## Output

Returns a JSON object containing the reversed array sliced to at most 10 items from the tail (or from an offset), representing the final elements of the input array after reversal. Optional comparison array results may also be included.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "values"
 ],
 "properties": {
  "size": {
   "type": "integer"
  },
  "other": {
   "type": "array",
   "description": "Optional comparison array"
  },
  "offset": {
   "type": "integer"
  },
  "values": {
   "type": "array",
   "description": "JSON array with at most 1000 items"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-array-reverse-top-10-fb79fc96/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)