# Schema Conformity Analytics — Equal-Width Histogram & Two-Measure Correlation

> Schema Conformity Analytics — Equal-Width Histogram & 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 2026-10-18).

Generates an equal-width histogram and a two-measure correlation report for schema conformity data (valid_records vs checked_records) across up to 200 rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-analytics-02-171?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/schema-conformity-analytics-equal-width-histogram-two-measure-25b67e3b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Qexb2JAoG08VuDeG2gled

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 schema-conformity-analytics-equal-width-histogram-two-measure-25b67e3b -d '<json body>'
```

Example prompt: I have 4 rows of schema conformity data — for group-a on 2026-10-01 row-1 had 10 valid out of 1 checked, group-b on 2026-10-02 row-2 had 20 valid out of 2 checked, group-a on 2026-10-03 row-3 had 15 valid out of 3 checked, group-b on 2026-10-04 row-4 had 30 valid out of 4 checked — give me an equal-width histogram with 5 bins on valid_records plus the correlation between valid_records and checked_records.

## When to prefer this

Choose this endpoint when you have schema conformity audit data with valid_records and checked_records columns and need both a distribution profile (histogram) and a linear relationship measure (correlation) in a single call for up to 200 rows. It is ideal for data quality pipelines, governance dashboards, or audit reporting workflows where you want two complementary statistical views without setting up local analytics infrastructure. Prefer alternatives if you need more than 200 rows, require live data fetching, need predictions or forecasts, or need more than two statistical report types.

## Known failure modes

- Exceeding 200 rows causes a validation error
- Supplying fewer than 1 row causes a validation error
- Invalid date format (not YYYY-MM-DD) causes schema rejection
- bins value outside 1–30 range causes validation error
- Null values in valid_records or checked_records may affect correlation computation
- Missing required row fields (row_id, date) causes row-level schema failure

## How this service works

Schema conformity — Equal-width histogram + Two-measure correlation: Equal-width histogram + Two-measure correlation for supplied schema conformity records (valid_records, checked_records). 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) an equal-width histogram partitioned into the requested number of bins showing frequency distribution of the chosen field (valid_records or checked_records), and (2) a correlation report measuring the statistical relationship between valid_records and checked_records across all supplied rows. Both reports are computed locally from the provided data with no external lookups.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "bins": {
   "type": "integer",
   "default": 5,
   "maximum": 30,
   "minimum": 1
  },
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "row_id",
     "dataset_group",
     "date",
     "valid_records",
     "checked_records"
    ],
    "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
     },
     "valid_records": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "checked_records": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "dataset_group": "group-a",
     "valid_records": 10,
     "checked_records": 1
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "dataset_group": "group-b",
     "valid_records": 20,
     "checked_records": 2
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "dataset_group": "group-a",
     "valid_records": 15,
     "checked_records": 3
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "dataset_group": "group-b",
     "valid_records": 30,
     "checked_records": 4
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "valid_records",
    "checked_records"
   ],
   "type": "string",
   "default": "valid_records"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/schema-conformity-analytics-equal-width-histogram-two-measure-25b67e3b/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)