# Museum Footfall Two-Measure Correlation

> Museum Footfall Two-Measure Correlation is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).

Computes a two-measure correlation (e.g. visitors vs. dwell_minutes) from up to 200 museum footfall records, returning a local descriptive analytics report.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ar-analytics-museum-footfall-correlation?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/museum-footfall-two-measure-correlation-5f822de1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ewe6O6lauL6QTcebptHsq

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-two-measure-correlation-5f822de1 -d '<json body>'
```

Example prompt: Can you run a correlation analysis on my museum footfall data — I have 4 records with exhibit groups A and B dated 2026-10-01 through 2026-10-04, visitor counts of 10, 20, 15, and 30, and dwell times of 1, 2, 3, and 4 minutes — and tell me how strongly visitor count correlates with dwell time?

## When to prefer this

Choose this endpoint when you need a quick, cost-effective ($0.01 USDC) two-variable correlation between visitor counts and dwell minutes for museum footfall data, with no need for forecasting, enrichment, or external data. Ideal for museum operators who want descriptive analytics on up to 200 records in a single bounded report.

## Known failure modes

- Fewer than 1 row supplied — minItems validation error
- More than 200 rows supplied — maxItems exceeded error
- Missing required fields (row_id, exhibit, date, visitors, dwell_minutes) — schema validation error
- Invalid date format (not YYYY-MM-DD) — pattern validation error
- All values for one measure are identical — correlation undefined or returns NaN
- Null values in both numeric columns — may reduce usable sample size significantly

## How this service works

Museum footfall - Two-measure correlation: Two-measure correlation 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 two-measure correlation report.

## Output

A bounded two-measure correlation report covering the supplied rows, including the correlation coefficient between the two numeric measures (visitors and dwell_minutes), and descriptive statistics summarizing the relationship — no forecasting or enrichment, local analytics only.

## 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
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/museum-footfall-two-measure-correlation-5f822de1/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)