# Museum Footfall Explicit Missing-Value Fill

> Museum Footfall Explicit Missing-Value Fill 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).

Fills missing numeric values (visitors or dwell_minutes) in museum footfall records using zero, mean, or median imputation

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ar-analytics-museum-footfall-fill-missing?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/museum-footfall-explicit-missing-value-fill-e3013c43
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hcyepePZxPjoyqxe8mR-q

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 museum-footfall-explicit-missing-value-fill-e3013c43 -d '<json body>'
```

Example prompt: I have museum footfall records for our exhibits with some null visitor counts — can you fill those missing values using median imputation across up to 200 rows? My data has row IDs, exhibit names, dates, visitor counts, and dwell minutes.

## When to prefer this

Choose this endpoint when you have museum footfall records (per exhibit, per date) with null visitor counts or dwell minutes and need a fast, local imputation pass using zero, mean, or median fill — up to 200 rows per call. It is ideal for pre-processing data before dashboarding or reporting when no forecasting or external enrichment is needed. Prefer alternatives if you need outlier detection, duplicate key identification, or predictive gap-filling.

## Known failure modes

- Input array exceeds 200 rows — request rejected
- Invalid date format (not YYYY-MM-DD) — validation error
- Unknown field value outside enum ['visitors','dwell_minutes'] — rejected
- Unknown method value outside enum ['zero','mean','median'] — rejected
- All values in the target field are non-null — fill report returned with no changes
- Empty rows array — minimum 1 item required

## How this service works

Museum footfall - Explicit missing-value fill: Explicit missing-value fill for Museum footfall. Up to 200 supplied typed records. Local descriptive analytics; no enrichment or forecast. One of 25 new profiles across 20 shared operations in this industry. 0.01 USDC includes one bounded explicit missing-value fill report.

## Output

A bounded report containing the original museum footfall records with missing values in the specified field (visitors or dwell_minutes) replaced using the chosen method (zero, mean, or median). The response includes up to 200 rows with imputed values and local descriptive analytics — no forecasting or external enrichment.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/museum-footfall-explicit-missing-value-fill-e3013c43/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)