# Numora Outlier Detection API

> Numora Outlier Detection API is a paid API for AI agents from numomo.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Detects statistical outliers in a numeric dataset using configurable methods, returning flagged values and their positions.

## Facts

- Endpoint: POST https://numomo.vercel.app/api/statistics/outlier
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-outlier-detection-api-7fd5a327
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Tdp9qzoEVUfxP3j_1DvU1

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 numora-outlier-detection-api-7fd5a327 -d '<json body>'
```

Example prompt: I have a list of measurements — [12, 14, 13, 15, 100, 12, 14, 11, 13] — can you detect any statistical outliers in that data using the IQR method?

## When to prefer this

Choose this endpoint when you need a fast, serverless, zero-dependency outlier detection computation on a numeric array and want a simple POST interface with micropayment access. Ideal for agents that need on-demand statistical anomaly detection without setting up a data science environment or calling a heavier analytics platform. Prefer it over general-purpose Python execution when you want a deterministic, pre-built statistical computation with predictable cost per call.

## Known failure modes

- Empty data array returns an error or empty result
- Non-numeric values in the array may cause computation failure
- Unrecognized 'method' string may fall back to default or return an error
- Datasets that are too small (e.g. fewer than 4 values) may not support meaningful outlier detection
- Payment failure via x402 will block the request entirely

## How this service works

100 pure math computation endpoints for AI agents. Statistics, financial math, linear algebra, equation solving, calculus, number theory, sequence generation, and unit conversions. Zero external dependencies. x402 micropayments on Base.

## Output

Returns a JSON object with a 'success' boolean, a 'result' object containing identified outlier values and their indices within the input array, and a 'computation' string describing what was computed in human-readable form.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "data"
 ],
 "properties": {
  "data": {
   "type": "array"
  },
  "method": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "success",
  "result",
  "computation"
 ],
 "properties": {
  "result": {
   "type": "object",
   "description": "Computation result varies by endpoint"
  },
  "success": {
   "type": "boolean",
   "description": "Always true on success"
  },
  "computation": {
   "type": "string",
   "description": "Human-readable description of what was computed"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/numora-outlier-detection-api-7fd5a327/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numomo.vercel.app](https://www.zero.xyz/host/numomo.vercel.app/llms.txt)