# ONE Engine Number Ceiling

> ONE Engine Number Ceiling is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0009/call, status unknown (last checked 2026-10-02).

Returns the ceiling (smallest integer greater than or equal to) of a given numeric value.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v1/number/ceil?utm_source=zero.xyz
- Price: $0.0009/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-number-ceiling-b06f81a3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6436NdxvDQW65fXvjxKHb

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-number-ceiling-b06f81a3 -d '<json body>'
```

Example prompt: What's the ceiling of 12.7? Use ONE Engine to round it up to the nearest integer.

## When to prefer this

Use this endpoint when an AI agent needs a lightweight, pay-per-call ceiling (round-up) operation without spinning up its own math library or compute environment. Ideal for autonomous agents on Base using x402 micropayments that need deterministic integer rounding at very low cost ($0.0009 USDC per call).

## Known failure modes

- Missing or invalid 'value' field in request body — likely returns 4xx error
- Non-numeric input may cause parsing failure
- Payment failure via x402 protocol results in 402 Payment Required response
- Network timeout on Cloudflare Workers edge

## How this service works

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

## Output

A JSON object with a 'value' field containing the ceiling integer result of the input number (e.g. {"value": 13} for an input of 12.1).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "value": {
   "type": "number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "value": 13
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-number-ceiling-b06f81a3/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)