# Null Coverage Record Quality Audit & Keyed Dataset Comparison

> Null Coverage Record Quality Audit & 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 2026-10-14).

Audits null/missing value coverage in up to 200 rows of supplied data and compares two datasets by key, producing two independent quality reports locally.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-analytics-03-018?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/null-coverage-record-quality-audit-keyed-dataset-comparison-0046f418
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ezyvXZjZKryVj-9ngEe_W

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 null-coverage-record-quality-audit-keyed-dataset-comparison-0046f418 -d '<json body>'
```

Example prompt: Can you run a null coverage audit and dataset comparison on these two sets of records? The first dataset has rows for group-a and group-b from 2026-10-01 to 2026-10-04 with their missing_values and total_values, and the second dataset has the same row IDs but slightly different missing_values — I want two reports showing quality and differences.

## When to prefer this

Choose this endpoint when you need a fast, low-cost ($0.01 USDC) dual-report analysis of null/missing value coverage on supplied tabular data — especially when comparing two versions or snapshots of the same dataset by key. Ideal for data pipeline QA, pre-ingestion validation, and ETL auditing where no external data lookup or prediction is needed. Not suitable for large datasets exceeding 200 rows per call, real-time data fetching, or predictive analytics.

## Known failure modes

- More than 200 rows submitted — endpoint rejects input exceeding maxItems limit
- Missing required fields (row_id, dataset_group, date, missing_values, total_values) cause schema validation failure
- Invalid date format (not YYYY-MM-DD) triggers pattern validation error
- null or out-of-range numeric values for missing_values or total_values may cause computation errors
- Empty rows array (minItems:1 not met) returns an error
- Mismatched row_ids between primary and secondary datasets may produce incomplete comparison output

## How this service works

Null coverage — Record quality audit + Keyed dataset comparison: Record quality audit + Keyed dataset comparison for supplied null coverage records (missing_values, total_values). 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 record quality audit summarizing null/missing value coverage statistics across the supplied rows, and (2) a keyed dataset comparison report highlighting differences between the primary and secondary datasets by row_id. Both reports are computed locally from supplied data with no external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/null-coverage-record-quality-audit-keyed-dataset-comparison-0046f418/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)