# Forecast Verification Inputs — Numeric Row Ordering + Keyed Dataset Comparison

> Forecast Verification Inputs — Numeric Row Ordering + Keyed Dataset Comparison 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).

Analyzes up to 200 rows of forecast vs. observed value pairs, producing two reports: numeric row ordering and keyed dataset comparison across station groups and dates.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-weather-24-123?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/forecast-verification-inputs-numeric-row-ordering-keyed-dataset-30ac989b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GlT2lufWFyp8U-FGPcTch

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 forecast-verification-inputs-numeric-row-ordering-keyed-dataset-30ac989b -d '<json body>'
```

Example prompt: I have two sets of weather station forecast verification records — each with up to 200 rows of forecast_value and observed_value keyed by row_id, station_group, and date — can you run a numeric row ordering report and a keyed dataset comparison report on them to see how they differ?

## When to prefer this

Choose this endpoint when you need to locally analyze forecast vs. observed value pairs — specifically to rank records numerically and compare two keyed datasets side by side — without relying on any external lookup, live weather data, or predictive modeling. Ideal for offline forecast verification workflows, model-output comparison pipelines, or auditing historical forecast accuracy across station groups at minimal cost ($0.01 USDC for both reports).

## Known failure modes

- Rows array empty or missing — validation error returned
- Row count exceeds 200 — request rejected
- Invalid date format (not YYYY-MM-DD) — schema validation failure
- Missing required fields (row_id, forecast_value, observed_value) — error per row
- Null values in numeric fields may affect ordering output
- Mismatched row_ids between 'rows' and 'other' datasets result in unmatched keys in comparison report
- Payment not included or insufficient — 402 payment required response

## How this service works

Forecast verification inputs — Numeric row ordering + Keyed dataset comparison: Numeric row ordering + Keyed dataset comparison for supplied forecast verification inputs records (forecast_value, observed_value). 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 computed locally against the supplied data: (1) a numeric row ordering of the input records ranked by the selected field (forecast_value or observed_value), and (2) a keyed dataset comparison between the primary 'rows' dataset and the secondary 'other' dataset, matching records by row_id/station_group/date keys and highlighting differences in forecast_value or observed_value.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/forecast-verification-inputs-numeric-row-ordering-keyed-dataset-30ac989b/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)