# Energy Readings Adjacent Row Changes

> Energy Readings 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 2026-10-20).

Computes adjacent row-to-row differences (period changes) for energy reading records (kWh or cost) across up to 200 supplied data points

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-analytics-energy-readings-period-change?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/energy-readings-adjacent-row-changes-3197f415
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DkKn4UmV92iN9qyw8iBe3

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 energy-readings-adjacent-row-changes-3197f415 -d '<json body>'
```

Example prompt: I have a list of daily energy meter readings with kWh values from meter group-a and group-b for October 2026 — can you calculate the adjacent row-to-row changes in kWh across those readings?

## When to prefer this

Choose this endpoint when you need fast, local computation of row-to-row differences in energy meter data (kWh or cost) without any external API dependencies or forecasting. Ideal for time-series delta analysis on batches of up to 200 energy readings where you want consistent, bounded numeric processing at minimal cost ($0.01 USDC per call).

## Known failure modes

- Fewer than 1 row supplied — returns validation error
- More than 200 rows supplied — rejected by maxItems constraint
- Invalid date format (not YYYY-MM-DD) — schema validation failure
- Missing required fields (row_id, meter, date) — rejected
- Field enum value not 'kwh' or 'cost' — schema validation error
- Numeric values outside ±1,000,000,000,000 bounds — rejected

## How this service works

Energy readings - Adjacent row changes: Adjacent row changes for Energy readings. Up to 200 supplied typed records. Local numeric and data-quality processing; no external enrichment or forecasting. One of 25 profiles or calculations across 20 shared operations in this sector. 0.01 USDC includes one bounded adjacent row changes deliverable.

## Output

Returns row-level period change (delta) values for the selected field (kWh or cost), computed as the difference between each row and its adjacent predecessor. Results are locally processed with no external enrichment, covering up to 200 input records per call.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/energy-readings-adjacent-row-changes-3197f415/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)