# API Contracts — Numeric Distribution + Category Frequencies

> API Contracts — Numeric Distribution + Category Frequencies is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-24).

Analyzes API contract records by computing numeric distribution statistics for fields_checked/incompatible_fields and category frequency counts for the component field, returning two analytical reports for up to 200 rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-software-19-072?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-contracts-numeric-distribution-category-frequencies-b4e23dd9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_X-ZxfXGWXCGqGLo0NLL-j

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 api-contracts-numeric-distribution-category-frequencies-b4e23dd9 -d '<json body>'
```

Example prompt: Can you analyze this batch of API contract records and give me both the numeric distribution for fields_checked and a frequency breakdown of the component categories? Here are up to 200 rows with row_id, component, date, fields_checked, and incompatible_fields.

## When to prefer this

Use this endpoint when you have API contract records with fields_checked and incompatible_fields metrics and need both a numeric distribution summary and a category frequency breakdown in a single call for up to 200 rows. Prefer this over general-purpose analytics tools when you want a lightweight, pre-paid ($0.01 USDC) analysis that returns two structured reports simultaneously without requiring external data connections or bespoke code.

## Known failure modes

- Fewer than 1 row submitted — request rejected
- More than 200 rows submitted — exceeds row limit
- Invalid date format (not YYYY-MM-DD) — schema validation error
- Missing required fields (row_id, fields_checked, incompatible_fields) — validation error
- Numeric values outside allowed range (±1 trillion) — schema rejection
- Invalid field enum value (not fields_checked or incompatible_fields) — rejected

## How this service works

API contracts — Numeric distribution + Category frequencies: Numeric distribution + Category frequencies for supplied api contracts records (fields_checked, incompatible_fields). 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

Two analytical reports: (1) a numeric distribution summary (min, max, mean, median, std dev, percentiles, etc.) for the selected numeric field (fields_checked or incompatible_fields), and (2) a category frequency table showing how often each unique component value appears across the supplied rows. Both reports are computed locally on the submitted data with no external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-contracts-numeric-distribution-category-frequencies-b4e23dd9/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)