# ONE Engine Array Set Pack T5

> ONE Engine Array Set Pack T5 is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0025/call, status unknown (last checked 2026-10-02).

Packs two input arrays into a set-based data structure using tier-5 processing logic.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v2/array-set-pack/t5?utm_source=zero.xyz
- Price: $0.0025/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-set-pack-t5-b0cb1141
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fOusIW1XadSV_vtBwNeBH

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-set-pack-t5-b0cb1141 -d '<json body>'
```

Example prompt: Pack these two arrays into a set using the ONE Engine array-set-pack utility: array A is [1, 2, 3, 4] and array B is [3, 4, 5, 6].

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call array set packing computation with minimal overhead, especially in autonomous agent pipelines that use the x402 payment protocol on Base. Ideal when you want to combine or pack two arrays into a set structure without standing up your own compute.

## Known failure modes

- Missing or non-array input for 'a' or 'b' fields — likely returns a 4xx validation error
- Payment failure via x402 protocol — request rejected before processing
- Empty arrays passed — may return an empty or trivial result
- Network/worker timeout — Cloudflare Worker may return 5xx under load

## How this service works

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

## Output

Returns a JSON object containing a 'tier' field (value 5) and a 'result' field with the tier-5-processed packed set output derived from the two input arrays.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "a": {
   "type": "array"
  },
  "b": {
   "type": "array"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tier": 5,
  "result": "Tier-dependent output"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-array-set-pack-t5-b0cb1141/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)