# API Contracts — Numeric Row Ordering + Adjacent Row Changes

> API Contracts — Numeric Row Ordering + Adjacent Row Changes is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-24).

Runs two local analytical reports on API contract records: numeric row ordering and adjacent row changes for the fields_checked or incompatible_fields metric.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-software-19-116?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-contracts-numeric-row-ordering-adjacent-row-changes-3fc81796
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dBBdE7xunNk5doOzIu5eX

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 api-contracts-numeric-row-ordering-adjacent-row-changes-3fc81796 -d '<json body>'
```

Example prompt: I have up to 200 API contract records with fields_checked and incompatible_fields values — can you run the numeric row ordering and adjacent row changes reports on the incompatible_fields column so I can see how the values are ranked and how they shift between consecutive rows?

## When to prefer this

Choose this endpoint when you need two specific analytical views — numeric ordering and adjacent row changes — on API contract data (fields_checked, incompatible_fields) without requiring any external data lookup, ML prediction, or live API integration. It is ideal for small batch analysis of up to 200 rows at very low cost, where local computation on supplied data is sufficient.

## Known failure modes

- Input rows exceed 200 item limit — request rejected
- Missing required fields (row_id, date, fields_checked, incompatible_fields) cause validation errors
- Invalid date format (not YYYY-MM-DD) causes schema rejection
- Null values in numeric fields may affect ordering or delta computation
- Invalid field enum value (not fields_checked or incompatible_fields) causes rejection
- Payment of 0.01 USDC not confirmed — request not processed

## How this service works

API contracts — Numeric row ordering + Adjacent row changes: Numeric row ordering + Adjacent row changes for supplied api contracts records (fields_checked, incompatible_fields). 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 numeric row ordering report ranking the supplied rows by the chosen metric (fields_checked or incompatible_fields), and (2) an adjacent row changes report showing the delta between each consecutive row for that metric. Both reports are computed locally from the supplied data with no external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-contracts-numeric-row-ordering-adjacent-row-changes-3fc81796/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)