# Label Review — Numeric Distribution + Equal-Width Histogram

> Label Review — Numeric Distribution + Equal-Width Histogram 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).

Computes a numeric distribution report and an equal-width histogram for label review data (reviewed_records or changed_labels) across up to 200 rows using local analytical engines.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-analytics-12-079?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/label-review-numeric-distribution-equal-width-histogram-2f430135
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YXeuR95XjyDMfMFF0WIf2

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 label-review-numeric-distribution-equal-width-histogram-2f430135 -d '<json body>'
```

Example prompt: Can you analyze the distribution of reviewed_records in my label review data and give me both a numeric distribution report and an equal-width histogram split into 10 bins? Here are my rows: [{"row_id":"r1","dataset_group":"alpha","date":"2024-01-15","reviewed_records":120,"changed_labels":8},{"row_id":"r2","dataset_group":"beta","date":"2024-01-16","reviewed_records":340,"changed_labels":22}].

## When to prefer this

Choose this endpoint when you need both a numeric distribution summary and an equal-width histogram for label review data (reviewed_records or changed_labels) in a single low-cost call. It is purpose-built for annotation and data labeling quality workflows, processes up to 200 rows per call, and requires no external data access. Prefer it over generic analytics endpoints when your data follows the label review schema (row_id, dataset_group, date, reviewed_records, changed_labels) and you need two complementary distribution views at once for $0.01.

## Known failure modes

- Fewer than 1 row or more than 200 rows supplied — request rejected
- bins value outside 1–30 range — validation error
- Missing required row fields (row_id, date, reviewed_records, changed_labels) — schema validation failure
- Invalid date format (not YYYY-MM-DD) — pattern validation error
- All values null for the selected field — histogram cannot be computed
- field enum value not recognized — validation error

## How this service works

Label review — Numeric distribution + Equal-width histogram: Numeric distribution + Equal-width histogram for supplied label review records (reviewed_records, changed_labels). 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 for the specified field (reviewed_records or changed_labels): (1) a numeric distribution summary with descriptive statistics, and (2) an equal-width histogram dividing the value range into the requested number of bins with counts per bin. Both reports are computed locally from the supplied 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",
     "reviewed_records",
     "changed_labels"
    ],
    "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
     },
     "changed_labels": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "reviewed_records": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "dataset_group": "group-a",
     "changed_labels": 1,
     "reviewed_records": 10
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "dataset_group": "group-b",
     "changed_labels": 2,
     "reviewed_records": 20
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "dataset_group": "group-a",
     "changed_labels": 3,
     "reviewed_records": 15
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "dataset_group": "group-b",
     "changed_labels": 4,
     "reviewed_records": 30
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "reviewed_records",
    "changed_labels"
   ],
   "type": "string",
   "default": "reviewed_records"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/label-review-numeric-distribution-equal-width-histogram-2f430135/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)