# Business Directory Coverage — Category Frequencies + Two-Measure Correlation

> Business Directory Coverage — Category Frequencies + 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 category frequencies and two-measure (listed_entities vs verified_entities) correlation analysis for up to 200 business directory coverage records

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-company-14-108?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-category-frequencies-two-measure-04e1117c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xw5Wwz7YS-Y7sHFZHmLlk

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-category-frequencies-two-measure-04e1117c -d '<json body>'
```

Example prompt: Analyze these 4 business directory coverage rows — groups 'group-a' and 'group-b' from October 2026 — and give me the category frequencies for each company group plus the correlation between listed_entities and verified_entities across all rows.

## When to prefer this

Choose this endpoint when you have tabular business directory coverage data with listed and verified entity counts and need both a categorical frequency breakdown and a linear correlation between those two numeric measures in a single low-cost call. It is ideal for offline/batch analytical tasks on already-collected data (up to 200 rows) where no live lookup, prediction, or external data enrichment is needed.

## Known failure modes

- Fewer than 1 row supplied — validation error
- More than 200 rows supplied — exceeds maximum item limit
- Missing required fields (row_id, company_group, date, listed_entities, verified_entities) — schema validation failure
- Invalid date format (not YYYY-MM-DD) — pattern mismatch error
- Numeric values outside ±1,000,000,000,000 range — schema bounds violation
- Insufficient variance in data — correlation may be undefined or return NaN

## How this service works

Business directory coverage — Category frequencies + Two-measure correlation: Category frequencies + Two-measure correlation 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 independent analytical reports: (1) a category frequency table showing how often each company_group appears in the supplied rows, and (2) a two-measure correlation analysis quantifying the relationship between listed_entities and verified_entities across all supplied records. Up to 200 rows supported per call.

## 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
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/business-directory-coverage-category-frequencies-two-measure-04e1117c/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)