# Feature Availability Analytics: Numeric Distribution + Two-Measure Correlation

> Feature Availability Analytics: Numeric Distribution + 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 2026-10-20).

Computes numeric distribution statistics and Pearson correlation between populated_features and expected_features for up to 200 supplied feature-availability records in two independent reports.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-analytics-10-081?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/feature-availability-analytics-numeric-distribution-two-measure-f8ee067e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FrdFHANzV1gUIQvoBcV-Z

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 feature-availability-analytics-numeric-distribution-two-measure-f8ee067e -d '<json body>'
```

Example prompt: Can you run a numeric distribution and correlation analysis on my feature availability data? I have 4 rows across two groups — group-a and group-b — with dates from 2026-10-01 to 2026-10-04, and I want to analyze the populated_features field against expected_features.

## When to prefer this

Choose this endpoint when you have raw feature-availability records (populated_features, expected_features) and need both a distribution summary and a correlation report in a single low-cost call without any external data lookup or ML prediction. It is ideal for data quality audits, ML pipeline monitoring, and completeness reporting on small-to-medium datasets (≤200 rows). Prefer alternatives if you need live data enrichment, predictions, or analysis of fields beyond these two measures.

## Known failure modes

- More than 200 rows supplied — request rejected or truncated
- Missing required fields (row_id, date, populated_features, expected_features) cause validation errors
- Date strings not matching YYYY-MM-DD pattern fail schema validation
- All null values in numeric fields result in degenerate or undefined statistical outputs
- Insufficient variance in data may produce correlation values of NaN or ±1 with low reliability

## How this service works

Feature availability — Numeric distribution + Two-measure correlation: Numeric distribution + Two-measure correlation for supplied feature availability records (populated_features, expected_features). 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 numeric distribution report for the selected field (populated_features or expected_features) covering summary stats such as mean, median, variance, and histogram-style breakdown; and (2) a two-measure correlation report quantifying the relationship between populated_features and expected_features across the supplied rows. No external data is fetched; all computation runs on the supplied rows only.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/feature-availability-analytics-numeric-distribution-two-measure-f8ee067e/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)