# Water Monitoring IQR Outlier Flags

> Water Monitoring IQR Outlier Flags is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Detects IQR-based statistical outliers in water monitoring records (litres consumed or cost) across sites and dates

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-analytics-water-monitoring-outliers?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/water-monitoring-iqr-outlier-flags-a7f5e4ad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XFHl1KXYUA97ZriFFx-Di

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 water-monitoring-iqr-outlier-flags-a7f5e4ad -d '<json body>'
```

Example prompt: Check these 50 water monitoring records for IQR outliers on the litres field — sites include 'north-plant' and 'south-plant' with daily readings from 2025-01-01 to 2025-02-19 — and flag any rows that look statistically anomalous.

## When to prefer this

Choose this endpoint when you need fast, local IQR-based statistical outlier detection on water monitoring records (up to 200 rows) without requiring external enrichment, forecasting, or ML models. It is purpose-built for the water sector with typed fields for site, date, litres, and cost, making it ideal for data quality screening, pre-pipeline validation, or operational anomaly triage on bounded datasets.

## Known failure modes

- Empty or missing rows array returns validation error
- More than 200 rows submitted exceeds the maxItems limit and will be rejected
- Invalid date format (not YYYY-MM-DD) causes schema validation failure
- Null values in both litres and cost for the selected field may produce empty or degenerate IQR results
- Unknown field value other than 'litres' or 'cost' will fail enum validation
- Insufficient variance in data (all identical values) may yield no outlier flags

## How this service works

Water monitoring - IQR outlier flags: IQR outlier flags for Water monitoring. Up to 200 supplied typed records. Local numeric and data-quality processing; no external enrichment or forecasting. One of 25 profiles or calculations across 20 shared operations in this sector. 0.01 USDC includes one bounded iqr outlier flags deliverable.

## Output

A row-level set of IQR outlier flags for each submitted water monitoring record, identifying which rows have values that fall outside the interquartile range bounds for the selected field (litres or cost), enabling downstream filtering, review, or data quality remediation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "row_id",
     "site",
     "date",
     "litres",
     "cost"
    ],
    "properties": {
     "cost": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "date": {
      "type": "string",
      "default": "",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "maxLength": 10
     },
     "site": {
      "type": "string",
      "default": "",
      "maxLength": 80
     },
     "litres": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "row_id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "cost": 1,
     "date": "2026-10-01",
     "site": "group-a",
     "litres": 10,
     "row_id": "row-1"
    },
    {
     "cost": 2,
     "date": "2026-10-02",
     "site": "group-b",
     "litres": 20,
     "row_id": "row-2"
    },
    {
     "cost": 3,
     "date": "2026-10-03",
     "site": "group-a",
     "litres": 15,
     "row_id": "row-3"
    },
    {
     "cost": 4,
     "date": "2026-10-04",
     "site": "group-b",
     "litres": 30,
     "row_id": "row-4"
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "litres",
    "cost"
   ],
   "type": "string",
   "default": "litres"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/water-monitoring-iqr-outlier-flags-a7f5e4ad/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)