# Null Coverage Analytics — Duplicate Key Report + Equal-Width Histogram

> Null Coverage Analytics — Duplicate Key Report + 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 2026-10-14).

Generates two local analytical reports — a duplicate key report and an equal-width histogram — for supplied null coverage records containing missing_values and total_values fields, for up to 200 rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-analytics-03-064?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-analytics-duplicate-key-report-equal-width-histogram-f085a752
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_R3GShMYQtRRW8qTT9Zj9P

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-analytics-duplicate-key-report-equal-width-histogram-f085a752 -d '<json body>'
```

Example prompt: Can you run a duplicate key report and an equal-width histogram (5 bins) on my null coverage data for the missing_values field? Here are my rows: row-1, group-a, 2026-10-01, missing=10, total=100; row-2, group-b, 2026-10-02, missing=20, total=200; row-3, group-a, 2026-10-01, missing=10, total=100.

## When to prefer this

Choose this endpoint when you need both duplicate key detection and a distribution histogram on null coverage data (missing_values, total_values) in a single call for up to 200 rows, without any need for external data enrichment, live lookups, or predictions. It is particularly suited for lightweight, local data quality profiling workflows where cost efficiency (two reports for $0.01 USDC) matters.

## Known failure modes

- Input array exceeds 200 rows — request rejected
- rows array is empty or missing — validation error
- Invalid date format (not YYYY-MM-DD) — schema validation failure
- bins value outside 1–30 range — validation error
- field value not one of 'missing_values' or 'total_values' — enum validation failure
- All values are null for the selected field — histogram may be empty or degenerate
- Payment of 0.01 USDC not completed — 402 response

## How this service works

Null coverage — Duplicate key report + Equal-width histogram: Duplicate key report + Equal-width histogram 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 duplicate key report identifying rows with repeated row_id values, and (2) an equal-width histogram partitioning the selected numeric field (missing_values or total_values) into up to 30 bins with row counts per bin. Both reports are computed locally on the supplied data without 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",
     "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
  },
  "field": {
   "enum": [
    "missing_values",
    "total_values"
   ],
   "type": "string",
   "default": "missing_values"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/null-coverage-analytics-duplicate-key-report-equal-width-histogram-f085a752/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)