# ONE Engine Numeric Round (t3)

> ONE Engine Numeric Round (t3) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).

Rounds an array of numeric values with optional min/max clamping, scaling factor, offset, and decimal digit control.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/numeric/round/t3?utm_source=zero.xyz
- Price: $0.001/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-numeric-round-t3-2cc8a543
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yOqnkJcKQ8AFrg-uTOOKX

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-numeric-round-t3-2cc8a543 -d '<json body>'
```

Example prompt: Round these numbers [3.14159, 2.71828, 1.61803] to 2 decimal places, clamp them between 1 and 3, and apply a scale factor of 1.5.

## When to prefer this

Choose this endpoint when you need a cheap, pay-per-call numeric rounding and transformation utility without setting up your own compute — especially useful inside autonomous agent workflows on Base where x402 micropayments are already available. Ideal for batch-rounding up to 1000 numbers in a single call with optional clamping and scaling, at $0.001 USDC per call.

## Known failure modes

- Passing more than 1000 values in the array causes rejection
- Non-finite numbers (NaN, Infinity) in the values array may cause errors
- Missing required 'values' field returns a validation error
- Invalid types (e.g. strings in values array) cause schema validation failure
- Payment failure via x402 protocol blocks the call

## How this service works

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

## Output

Returns an object containing the transformed array of numbers after rounding, optional clamping to min/max bounds, scaling by factor, and offset application. The exact response shape may include the processed values array and metadata about the operation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "values"
 ],
 "properties": {
  "max": {
   "type": "number"
  },
  "min": {
   "type": "number"
  },
  "size": {
   "type": "integer"
  },
  "digits": {
   "type": "integer"
  },
  "factor": {
   "type": "number"
  },
  "offset": {
   "type": "number"
  },
  "values": {
   "type": "array",
   "description": "Finite numbers, maximum 1000"
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-numeric-round-t3-2cc8a543/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)