# ONE Engine Numeric Range Normalization

> ONE Engine Numeric Range Normalization is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0005/call, status unknown (last checked 2026-10-02).

Normalizes an array of numbers into a specified range with optional scaling, offset, and digit precision controls.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/numeric/normalize-range/t1?utm_source=zero.xyz
- Price: $0.0005/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-range-normalization-b98049f6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5BRAdrw65bsyNn6TwF7BW

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-range-normalization-b98049f6 -d '<json body>'
```

Example prompt: Normalize these sensor readings [12.4, 87.3, 45.1, 3.9, 61.0] to a range between 0 and 100, rounding to 2 decimal places.

## When to prefer this

Choose this endpoint when you need a fast, cheap, pay-per-call numeric normalization service that supports fine-grained control over output range, scaling factor, offset, and decimal precision — especially in agentic pipelines where you want to avoid spinning up your own compute. At $0.0005 USDC per call it is ideal for lightweight preprocessing steps in ML, analytics, or signal processing workflows.

## Known failure modes

- Input array exceeds 1000 elements — request rejected
- Non-finite values (NaN, Infinity) in the values array — computation error
- Min equals max causing division-by-zero in normalization
- Payment failure via x402 — 402 response with payment details
- Malformed request body — 400 validation error
- digits or size parameters outside acceptable integer bounds

## 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 normalized values array, where each input number has been rescaled to the specified [min, max] range with optional factor, offset, and digit rounding applied.

## 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-range-normalization-b98049f6/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)