# KiHustle Spearman Correlation API

> KiHustle Spearman Correlation API is a paid API for AI agents from kihustle.tech, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-13).

Computes the Spearman rank correlation coefficient between two numeric series.

## Facts

- Endpoint: POST https://kihustle.tech/nexus/api/v1/json-correlation-spearman?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kihustle-spearman-correlation-api-d87a103e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QwZRJ6WhLUM0QlFExePzM

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-spearman-correlation-api-d87a103e -d '<json body>'
```

Example prompt: Can you compute the Spearman rank correlation between these two series: series A is [10, 20, 30, 40, 50] and series B is [12, 18, 33, 37, 55]?

## When to prefer this

Use this endpoint when you need a non-parametric, rank-based measure of monotonic association between two numeric sequences, especially when data may not be normally distributed or contains outliers. Prefer Spearman over Pearson when the relationship between variables is monotonic but not necessarily linear.

## Known failure modes

- Mismatched series lengths may cause an error or undefined result
- Empty arrays passed as input may return an error
- Non-numeric values in either series may cause processing failure
- Identical values in a series (ties) may produce unexpected rho values
- Malformed JSON body returns a 4xx 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 Spearman correlation value and a 'status' field indicating success or failure of the computation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "series_a": {
   "type": "array",
   "items": {
    "type": "number"
   }
  },
  "series_b": {
   "type": "array",
   "items": {
    "type": "number"
   }
  }
 }
}
```

## 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-spearman-correlation-api-d87a103e/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)