# ONE Engine Linear Scale Normalizer

> ONE Engine Linear Scale Normalizer 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).

Linearly scales/normalizes an array of numeric values to a target range using configurable min, max, factor, offset, and precision parameters.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/numeric/linear-scale/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-linear-scale-normalizer-b7051249
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XpkjJNLmZQbcbmge2Bv7M

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-linear-scale-normalizer-b7051249 -d '<json body>'
```

Example prompt: Normalize these numbers [0.5, 3.2, 7.8, 1.1, 9.4] to a 0-to-100 scale with 2 decimal places using ONE Engine's linear scale endpoint.

## When to prefer this

Choose this endpoint when you need a quick, cheap ($0.001 USDC) serverless linear normalization of a numeric array without standing up your own compute. It is ideal for preprocessing steps in agent pipelines where data needs to be rescaled to a known range before downstream ML inference, visualization, or comparison operations. Prefer it over manual computation when operating in an autonomous agent context with x402 micropayment capability on Base.

## Known failure modes

- More than 1000 values in the input array — request rejected
- Non-finite numbers (NaN, Infinity) in the values array — validation error
- Missing required 'values' field — 400 bad request
- Payment failure via x402 protocol — 402 payment required
- Malformed JSON body — parse error

## How this service works

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

## Output

A JSON object containing the linearly scaled/normalized output values corresponding to the input array, transformed according to the specified min, max, factor, offset, and digits parameters.

## 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-linear-scale-normalizer-b7051249/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)