# SignalDesk AI Min-Max Normalize

> SignalDesk AI Min-Max Normalize is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).

Normalizes an array of up to 1000 numbers to the [0, 1] range using min-max scaling, returning the scaled values along with the observed min and max.

## Facts

- Endpoint: POST https://x402-agent.kariguetoazul.workers.dev/api/stats/minmax-normalize?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signaldesk-ai-min-max-normalize-674de648
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3gDZgMFzAUHEXDZlpbGwK

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 signaldesk-ai-min-max-normalize-674de648 -d '<json body>'
```

Example prompt: Can you min-max normalize these sensor readings for me so they all fall between 0 and 1? The values are: 5, 10, 15.

## When to prefer this

Choose this endpoint when you need a quick, paid, stateless min-max normalization of up to 1000 numeric values via a simple REST call with x402 micropayment, especially in agent pipelines where you want a bounded, reliable computation without managing your own numeric library or infrastructure.

## Known failure modes

- Empty array or array exceeding 1000 items returns a validation error
- Non-numeric or non-finite values (NaN, Infinity) rejected by schema
- If all values are identical, the denominator is zero and normalization is undefined — may return NaN or an error
- Values outside the allowed range (±1e15) are rejected
- Payment not provided or invalid results in HTTP 402 response

## How this service works

Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.

## Output

Returns a JSON object containing the array of normalized values (each between 0.0 and 1.0), the original minimum value, and the original maximum value observed in the input array.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "values": {
   "type": "array",
   "items": {
    "type": "number",
    "maximum": 1000000000000000,
    "minimum": -1000000000000000
   },
   "maxItems": 1000,
   "minItems": 1,
   "description": "Up to 1000 finite observations."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "max": 15,
  "min": 5,
  "values": [
   0,
   0.5,
   1
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signaldesk-ai-min-max-normalize-674de648/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-agent.kariguetoazul.workers.dev](https://www.zero.xyz/host/x402-agent.kariguetoazul.workers.dev/llms.txt)