# Mann-Whitney U Test Proxy

> Mann-Whitney U Test Proxy is a paid API for AI agents from kihustle.tech, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-22).

Performs a Mann-Whitney U non-parametric statistical test comparing two independent numeric groups to determine if their distributions differ significantly.

## Facts

- Endpoint: POST https://kihustle.tech/bot-bazaar/api/v1/mann-whitney-u-proxy?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mann-whitney-u-test-proxy-769c42c2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qSIAf6VnyRilN5ehZM9W_

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 mann-whitney-u-test-proxy-769c42c2 -d '<json body>'
```

Example prompt: Run a Mann-Whitney U test comparing these two groups for me — group A is [12, 15, 14, 10, 13] and group B is [20, 22, 19, 25, 21] — and tell me if the difference is statistically significant.

## When to prefer this

Choose this endpoint when you need a non-parametric statistical comparison of two independent numeric samples without assuming normal distribution. It is preferable over t-tests when your data is ordinal, skewed, or has outliers. Use it for A/B testing, clinical comparisons, or any scenario where you want to test whether two groups come from the same distribution.

## Known failure modes

- Empty or missing group_a or group_b arrays — likely returns an error or unexpected result
- Non-numeric values in either array — may cause computation failure
- Extremely large arrays may hit timeout or payload limits
- Ambiguous or minimal response schema means detailed error codes are uncertain

## 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 indicating the outcome of the Mann-Whitney U statistical test and a 'status' field confirming successful processing. Additional statistical details (U-statistic, p-value) may be included depending on implementation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "group_a": {
   "type": "array",
   "items": {
    "type": "number"
   }
  },
  "group_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/mann-whitney-u-test-proxy-769c42c2/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)