# Label Review — Two-Measure Correlation + Keyed Dataset Comparison

> Label Review — Two-Measure Correlation + Keyed Dataset Comparison is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-15).

Computes Pearson/Spearman correlation between reviewed_records and changed_labels, and performs a keyed row-by-row comparison between two label review datasets, returning two independent analytical reports.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-analytics-12-183?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/label-review-two-measure-correlation-keyed-dataset-comparison-ede87afd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jIcomSW8fY8TNwr8PsL7m

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-two-measure-correlation-keyed-dataset-comparison-ede87afd -d '<json body>'
```

Example prompt: Run a two-measure correlation between reviewed_records and changed_labels, and a keyed dataset comparison across these two label review snapshots — here are the primary rows: [{"row_id":"r1","dataset_group":"group-a","date":"2025-01-01","reviewed_records":100,"changed_labels":12}] and the secondary rows: [{"row_id":"r1","dataset_group":"group-a","date":"2025-01-01","reviewed_records":100,"changed_labels":15}].

## When to prefer this

Choose this endpoint when you need both a statistical correlation between two numeric label-review metrics AND a structural diff between two versions of the same dataset in a single $0.01 call. It is ideal for annotation pipelines, ML data quality audits, and label change tracking where you want to understand both the quantitative relationship between review volume and label modifications, and identify exactly which keyed rows differ across two data snapshots — all without any external network lookups or predictions.

## Known failure modes

- Empty or missing rows array returns validation error
- Row count exceeds 200 items — request rejected
- Invalid date format (not YYYY-MM-DD) causes schema validation failure
- Mismatched row_id keys between primary and secondary datasets reduce matched comparison coverage
- Null values in reviewed_records or changed_labels may reduce correlation sample size or produce NaN coefficient
- Missing required fields (row_id, dataset_group, date) cause row-level rejection

## How this service works

Label review — Two-measure correlation + Keyed dataset comparison: Two-measure correlation + Keyed dataset comparison 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 independent analytical reports: (1) a two-measure correlation report showing the statistical relationship (e.g. Pearson/Spearman coefficient, p-value, sample size) between reviewed_records and changed_labels across the supplied rows; (2) a keyed dataset comparison report showing row-by-row matches, mismatches, and value differences between the primary (rows) and secondary (other) datasets, keyed on row_id. No external lookups or predictions are included.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/label-review-two-measure-correlation-keyed-dataset-comparison-ede87afd/health.json
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