# Business Directory Coverage — Two-Measure Correlation + Explicit Missing-Value Fill

> Business Directory Coverage — Two-Measure Correlation + 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 2026-10-16).

Computes correlation between listed_entities and verified_entities, and fills missing values in business directory coverage rows using a chosen strategy (zero, mean, or median), producing two analytical reports for up to 200 rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-company-14-184?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/business-directory-coverage-two-measure-correlation-explicit-missing-792accb3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__riiZmKbvnbOwD3ySG1HH

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 business-directory-coverage-two-measure-correlation-explicit-missing-792accb3 -d '<json body>'
```

Example prompt: I have up to 200 rows of business directory coverage data with listed_entities and verified_entities columns — can you run a two-measure correlation report and fill any missing values using median imputation on the listed_entities field?

## When to prefer this

Choose this endpoint when you need to simultaneously assess the statistical relationship between listed and verified entity counts AND clean missing values in a business directory coverage dataset in a single API call. It is ideal for data pipeline pre-processing steps where both imputation and correlation diagnostics are required together, without needing live data lookups or external enrichment. Prefer it over general-purpose analytics tools when your data fits within 200 rows and you want a low-cost, deterministic, locally-computed result.

## Known failure modes

- Input exceeds 200 rows — request rejected
- Missing required fields (row_id, date, listed_entities, verified_entities) — validation error
- Invalid date format (must be YYYY-MM-DD) — schema error
- Invalid method enum value (must be zero, mean, or median) — rejected
- Invalid field enum (must be listed_entities or verified_entities) — rejected
- All values in target field are null — imputation may return unchanged or zero-filled result
- Insufficient non-null pairs for correlation — may return NaN or undefined correlation

## How this service works

Business directory coverage — Two-measure correlation + Explicit missing-value fill: Two-measure correlation + Explicit missing-value fill for supplied business directory coverage records (listed_entities, verified_entities). 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: (1) a correlation result quantifying the relationship between listed_entities and verified_entities across the supplied rows, and (2) a missing-value-filled version of the dataset with nulls replaced according to the chosen method (zero, mean, or median) for the specified field — all computed locally without external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/business-directory-coverage-two-measure-correlation-explicit-missing-792accb3/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)