# Release Note Coverage String Normalisation and Missing-Value Fill

> Release Note Coverage String Normalisation and Missing-Value Fill is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-11-02).

Normalises string fields and fills missing values in release note coverage records (documented_changes, released_changes) for up to 200 rows, producing 2 analytical reports.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-writing-15-037?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/release-note-coverage-string-normalisation-and-missing-value-fill-59d216e5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Vy1Qt_OYC566ve1DkLo4f

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 release-note-coverage-string-normalisation-and-missing-value-fill-59d216e5 -d '<json body>'
```

Example prompt: Can you clean up my release note coverage records — normalise the strings and fill any missing documented_changes values using median imputation? I have about 50 rows with fields like row_id, document_group, date, documented_changes, and released_changes.

## When to prefer this

Choose this endpoint when you need lightweight, low-cost ($0.01 USDC) string normalisation and missing-value imputation specifically for release note coverage data (documented_changes, released_changes) with up to 200 rows and no need for external data, predictions, or live lookups. It delivers two bundled reports in a single call.

## Known failure modes

- More than 200 rows submitted — request rejected
- Invalid date format (not YYYY-MM-DD) — validation error
- Missing required fields (row_id, document_group, date) — schema error
- Invalid method enum value — request rejected
- Numeric values outside allowed range — validation error
- Empty rows array — minimum items constraint violation

## How this service works

Release note coverage — String normalisation + Explicit missing-value fill: String normalisation + Explicit missing-value fill for supplied release note coverage records (documented_changes, released_changes). 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

Two analytical reports covering the supplied release note coverage records, with string fields normalised and missing values for the selected field (documented_changes or released_changes) filled using the chosen method (zero, mean, or median). Processed for up to 200 rows using local analytical engines with no external lookups.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "row_id",
     "document_group",
     "date",
     "documented_changes",
     "released_changes"
    ],
    "properties": {
     "date": {
      "type": "string",
      "default": "",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "maxLength": 10
     },
     "row_id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "document_group": {
      "type": "string",
      "default": "",
      "maxLength": 80
     },
     "released_changes": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "documented_changes": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "document_group": "group-a",
     "released_changes": 1,
     "documented_changes": 10
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "document_group": "group-b",
     "released_changes": 2,
     "documented_changes": 20
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "document_group": "group-a",
     "released_changes": 3,
     "documented_changes": 15
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "document_group": "group-b",
     "released_changes": 4,
     "documented_changes": 30
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "documented_changes",
    "released_changes"
   ],
   "type": "string",
   "default": "documented_changes"
  },
  "method": {
   "enum": [
    "zero",
    "mean",
    "median"
   ],
   "type": "string",
   "default": "median"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/release-note-coverage-string-normalisation-and-missing-value-fill-59d216e5/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)