# Water Monitoring Equal-Width Histogram

> Water Monitoring Equal-Width Histogram is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Computes an equal-width histogram over water monitoring records (litres or cost) with a configurable number of bins, returning bin boundaries and counts.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-analytics-water-monitoring-histogram?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/water-monitoring-equal-width-histogram-2d8f475b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_beBCtXgmyaab1lHTxF9er

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-equal-width-histogram-2d8f475b -d '<json body>'
```

Example prompt: Can you compute an equal-width histogram of litres for my water monitoring data — I have 4 records: site group-a on 2026-10-01 with 10 litres and cost 1, site group-b on 2026-10-02 with 20 litres and cost 2, site group-a on 2026-10-03 with 15 litres and cost 3, site group-b on 2026-10-04 with 30 litres and cost 4 — use 5 bins?

## When to prefer this

Choose this endpoint when you need a fast, local equal-width histogram computation over water monitoring records (up to 200) with no external data dependencies. Ideal for distribution analysis, outlier detection, or summarizing water consumption or cost data into frequency buckets. Prefer this over general-purpose analytics tools when working specifically with water monitoring data structured around site, date, litres, and cost fields.

## Known failure modes

- Fewer than 1 or more than 200 rows supplied returns a validation error
- Invalid date format (non-YYYY-MM-DD) causes record rejection
- Bins value outside 1–30 range returns a schema validation error
- All values null in selected field may produce empty or degenerate histogram
- Missing required fields (row_id, site, date, litres, cost) causes record-level rejection
- Invalid field enum value (not 'litres' or 'cost') returns a validation error

## How this service works

Water monitoring - Equal-width histogram: Equal-width histogram 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 equal-width histogram deliverable.

## Output

Returns a bounded equal-width histogram with up to 30 bins over the selected numeric field (litres or cost). Each bin includes its lower and upper boundary and the count of records falling within that range, derived purely from the supplied records with no external enrichment.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "bins": {
   "type": "integer",
   "default": 5,
   "maximum": 30,
   "minimum": 1
  },
  "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-equal-width-histogram-2d8f475b/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)