# Knowledge Base Maintenance — Exact Row Deduplication + Equal-Width Histogram

> Knowledge Base Maintenance — Exact Row Deduplication + 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 2026-10-23).

Deduplicates rows and generates equal-width histogram reports for knowledge base maintenance metrics (updated_articles, due_articles) from up to 200 supplied records.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-writing-16-048?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/knowledge-base-maintenance-exact-row-deduplication-equal-width-37e4100f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_c45CAhCUSfQyWsqxPsCFx

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 knowledge-base-maintenance-exact-row-deduplication-equal-width-37e4100f -d '<json body>'
```

Example prompt: Deduplicate my knowledge base maintenance records and generate a 5-bin equal-width histogram for the updated_articles field — I have about 150 rows with row_id, document_group, date, updated_articles, and due_articles columns.

## When to prefer this

Choose this endpoint when you need both exact duplicate removal and a histogram distribution analysis on knowledge base article metrics in a single API call for up to 200 rows. It is ideal for offline/local analytical tasks with no need for live data lookup, prediction, or external integrations. Prefer this over separate deduplication or histogram tools when your data is small enough (≤200 rows) and you want both reports cheaply bundled at $0.01 USDC.

## Known failure modes

- Exceeds 200-row limit — request rejected
- Invalid date format (not YYYY-MM-DD) — validation error
- bins value outside 1–30 range — schema validation failure
- Missing required fields (row_id, document_group, date) — error returned
- Null values in selected numeric field may affect histogram binning
- Empty rows array — minimum 1 item required

## How this service works

Knowledge base maintenance — Exact row deduplication + Equal-width histogram: Exact row deduplication + Equal-width histogram for supplied knowledge base maintenance records (updated_articles, due_articles). 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 reports sharing the same input dataset: (1) an exact row deduplication report identifying and removing fully duplicate rows, and (2) an equal-width histogram report for the selected field (updated_articles or due_articles) divided into the specified number of bins, showing frequency counts per bin.

## 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",
     "document_group",
     "date",
     "updated_articles",
     "due_articles"
    ],
    "properties": {
     "date": {
      "type": "string",
      "default": "",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "maxLength": 10
     },
     "row_id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "due_articles": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "document_group": {
      "type": "string",
      "default": "",
      "maxLength": 80
     },
     "updated_articles": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "due_articles": 1,
     "document_group": "group-a",
     "updated_articles": 10
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "due_articles": 2,
     "document_group": "group-b",
     "updated_articles": 20
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "due_articles": 3,
     "document_group": "group-a",
     "updated_articles": 15
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "due_articles": 4,
     "document_group": "group-b",
     "updated_articles": 30
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "updated_articles",
    "due_articles"
   ],
   "type": "string",
   "default": "updated_articles"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/knowledge-base-maintenance-exact-row-deduplication-equal-width-37e4100f/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)