# ONE Engine Numeric Range Normalizer

> ONE Engine Numeric Range Normalizer is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-02).

Normalizes an array of numbers to a specified range, applying optional scaling, offset, digit rounding, and size constraints.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/numeric/normalize-range/t6?utm_source=zero.xyz
- Price: $0.004/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-normalizer-2f0d91dd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_x6R3DAqRfg5ULT8NXuzNW

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-normalizer-2f0d91dd -d '<json body>'
```

Example prompt: Normalize these values [14, 37, 52, 8, 99] to a range of 0 to 1, rounded to 3 decimal places.

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call numeric normalization operation without spinning up your own compute, especially in agent pipelines that need to preprocess numeric arrays before ML inference, visualization, or comparison. It is well-suited for small-to-medium arrays (up to 1000 values) and supports combined rescaling, offsetting, and rounding in a single call.

## Known failure modes

- Missing required 'values' array returns validation error
- More than 1000 values in the array exceeds the limit and is rejected
- Non-finite numbers (NaN, Infinity) in the input array cause failure
- Invalid types for min/max/factor/offset (e.g. strings) cause a schema error
- Payment not included or insufficient triggers x402 payment required response

## How this service works

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

## Output

A JSON object containing the normalized array of numbers transformed to fit the specified min/max range, with optional rounding to a given number of decimal digits, scaling by a factor, shifted by an offset, and truncated/sampled to the requested output size.

## 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-normalizer-2f0d91dd/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)