# Building Footprint Observations — Numeric Distribution & Equal-Width Histogram

> Building Footprint Observations — Numeric Distribution & 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 2026-11-02).

Computes numeric distribution statistics and an equal-width histogram for building footprint (m²) and height (m) observations supplied by the caller.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-weather-16-079?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/building-footprint-observations-numeric-distribution-equal-width-0e3051a8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uQ5A-rIgK84pcwgjvVMEY

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 building-footprint-observations-numeric-distribution-equal-width-0e3051a8 -d '<json body>'
```

Example prompt: Analyze the numeric distribution and generate an equal-width histogram with 8 bins for the footprint_m2 field using these 5 building records: row-1 (2024-01-10, group-A, footprint 120, height 15), row-2 (2024-01-11, group-A, footprint 250, height 22), row-3 (2024-01-12, group-B, footprint 85, height 10), row-4 (2024-01-13, group-B, footprint 310, height 30), row-5 (2024-01-14, group-A, footprint 175, height 18).

## When to prefer this

Choose this endpoint when you have raw building footprint or height measurement records (up to 200 rows) and need both a numeric distribution summary and an equal-width histogram in a single call. It is ideal for offline/batch analytical reporting on supplied data without requiring any external data lookup or live geospatial service. It covers exactly two fields (footprint_m2, height_m) and two report types in one low-cost call.

## Known failure modes

- Exceeds 200-row limit — request rejected with validation error
- Invalid date format (not YYYY-MM-DD) — row fails schema validation
- bin count outside 1–30 range — validation error returned
- Missing required fields (row_id, footprint_m2, height_m) — schema rejection
- Null numeric values may be excluded from distribution calculations
- Payment not settled (x402 protocol failure) — call not processed

## How this service works

Building footprint observations — Numeric distribution + Equal-width histogram: Numeric distribution + Equal-width histogram for supplied building footprint observations records (footprint_m2, height_m). Up to 200 rows; 2 independent reports using shared local analytical engines. No live lookup, prediction, professional assessment or external action. 0.01 USDC includes 2 supplied-data reports for up to 200 rows.

## Output

Returns two analytical reports for the supplied building footprint records: (1) a numeric distribution summary covering key statistics for the chosen field (footprint_m2 or height_m), and (2) an equal-width histogram with the requested number of bins showing bin boundaries and the count of observations falling in each bin. Up to 200 rows processed per call.

## 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",
     "station_group",
     "date",
     "footprint_m2",
     "height_m"
    ],
    "properties": {
     "date": {
      "type": "string",
      "default": "",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "maxLength": 10
     },
     "row_id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "height_m": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "footprint_m2": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "station_group": {
      "type": "string",
      "default": "",
      "maxLength": 80
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "height_m": 1,
     "footprint_m2": 10,
     "station_group": "group-a"
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "height_m": 2,
     "footprint_m2": 20,
     "station_group": "group-b"
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "height_m": 3,
     "footprint_m2": 15,
     "station_group": "group-a"
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "height_m": 4,
     "footprint_m2": 30,
     "station_group": "group-b"
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "footprint_m2",
    "height_m"
   ],
   "type": "string",
   "default": "footprint_m2"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/building-footprint-observations-numeric-distribution-equal-width-0e3051a8/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)