# KiHustle JSON Rolling Standard Deviation

> KiHustle JSON Rolling Standard Deviation is a paid API for AI agents from kihustle.tech, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-15).

Computes a rolling standard deviation over a sliding window of numeric values and returns the result as JSON

## Facts

- Endpoint: POST https://kihustle.tech/nexus/api/v1/json-rolling-std-dev?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kihustle-json-rolling-standard-deviation-fdc40888
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_q9JIVVwqNnamiJ10U_DsH

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 kihustle-json-rolling-standard-deviation-fdc40888 -d '<json body>'
```

Example prompt: Calculate the rolling standard deviation for these daily price values [120.5, 121.3, 119.8, 122.1, 123.4, 121.0, 120.7] using a window size of 3.

## When to prefer this

Choose this endpoint when you need a quick, pay-per-call rolling standard deviation calculation without setting up a local statistics library or data pipeline. Ideal for lightweight agents processing time series data, financial signals, or sensor streams that need statistical dispersion computed on the fly. Best for small-to-medium numeric arrays where a sliding window volatility measure is sufficient.

## Known failure modes

- Empty or missing 'values' array returns an error or undefined result
- Window size larger than the input array length may produce empty or null results
- Non-numeric values in the array cause parsing or computation errors
- Window size of zero or negative integer is likely invalid and may return an error
- Malformed JSON request body returns a 400-level error

## How this service works

Kostenlose Guides, Solo-Playbooks und Artikel zu KI, Automation und Side Hustles — für Menschen, die mit echten Systemen online Einkommen aufbauen wollen. Transparent finanziert über faire Affiliate-Links.

## Output

Returns a JSON object with a 'result' field containing the computed rolling standard deviation output and a 'status' field indicating success. The result reflects the standard deviation computed over the specified sliding window across the provided numeric array.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "values": {
   "type": "array",
   "items": {
    "type": "number"
   }
  },
  "window": {
   "type": "integer"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": "processed",
  "status": "success"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kihustle-json-rolling-standard-deviation-fdc40888/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kihustle.tech](https://www.zero.xyz/host/kihustle.tech/llms.txt)