# Snow Observations — Duplicate Key Report + Base-100 Series

> Snow Observations — Duplicate Key Report + Base-100 Series 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).

Analyzes up to 200 snow observation records (snow_depth_cm, snowfall_cm) to produce a duplicate key report and a Base-100 indexed time series for a chosen field.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-weather-09-063?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/snow-observations-duplicate-key-report-base-100-series-a1e3e5d1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2zX1FNosG68nFVw9y_Ef0

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 snow-observations-duplicate-key-report-base-100-series-a1e3e5d1 -d '<json body>'
```

Example prompt: Check my snow observation records for duplicate station/date keys and also build a Base-100 series on snow_depth_cm using row index 0 as the base — here are 4 rows: row-1 on 2026-10-01 for group-a with depth 10cm and snowfall 1cm, row-2 on 2026-10-02 for group-b with depth 20cm and snowfall 2cm, row-3 on 2026-10-03 for group-a with depth 15cm and snowfall 3cm, row-4 on 2026-10-04 for group-b with depth 30cm and snowfall 4cm.

## When to prefer this

Choose this endpoint when you have snow observation tabular data (up to 200 rows) and need both a duplicate key audit and a Base-100 normalized series in a single cheap API call. It is ideal for pre-pipeline data quality checks on snow depth and snowfall measurements, or when you need to index seasonal snow readings relative to a reference point without any external data source or live weather lookup.

## Known failure modes

- Exceeding 200 rows returns a validation error
- Missing required fields (row_id, station_group, date, snow_depth_cm, snowfall_cm) causes rejection
- Invalid date format (not YYYY-MM-DD) triggers schema validation failure
- base_index out of range (0–199) or pointing beyond actual row count causes error
- Null numeric values may affect Base-100 series computation
- Payment failure (insufficient USDC balance) blocks the request

## How this service works

Snow observations — Duplicate key report + Base-100 series: Duplicate key report + Base-100 series for supplied snow observations records (snow_depth_cm, snowfall_cm). 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 duplicate key report identifying rows sharing the same station_group and date combination, and (2) a Base-100 indexed series for the chosen field (snow_depth_cm or snowfall_cm) relative to the specified base row index. 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",
     "station_group",
     "date",
     "snow_depth_cm",
     "snowfall_cm"
    ],
    "properties": {
     "date": {
      "type": "string",
      "default": "",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "maxLength": 10
     },
     "row_id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "snowfall_cm": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "snow_depth_cm": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "station_group": {
      "type": "string",
      "default": "",
      "maxLength": 80
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "snowfall_cm": 1,
     "snow_depth_cm": 10,
     "station_group": "group-a"
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "snowfall_cm": 2,
     "snow_depth_cm": 20,
     "station_group": "group-b"
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "snowfall_cm": 3,
     "snow_depth_cm": 15,
     "station_group": "group-a"
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "snowfall_cm": 4,
     "snow_depth_cm": 30,
     "station_group": "group-b"
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "snow_depth_cm",
    "snowfall_cm"
   ],
   "type": "string",
   "default": "snow_depth_cm"
  },
  "base_index": {
   "type": "integer",
   "default": 0,
   "maximum": 199,
   "minimum": 0
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/snow-observations-duplicate-key-report-base-100-series-a1e3e5d1/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)