# Elevation Samples — Category Frequencies + Numeric Interval Filter

> Elevation Samples — Category Frequencies + Numeric Interval Filter is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Computes category frequency counts and applies a numeric interval filter on elevation sample records, returning two analytical reports for up to 200 rows of supplied data.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-weather-13-101?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/elevation-samples-category-frequencies-numeric-interval-filter-1d021901
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0f7-yD73kKLzQdbwk_gDd

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 elevation-samples-category-frequencies-numeric-interval-filter-1d021901 -d '<json body>'
```

Example prompt: I have 50 elevation sample records with fields row_id, station_group, date, elevation_m, and sample_weight — can you run category frequency counts by station_group and also filter to only the rows where elevation_m is between 0 and 500?

## When to prefer this

Choose this endpoint when you have a small-to-medium dataset (up to 200 rows) of elevation sample records and need both a categorical frequency breakdown and a numeric range filter in a single call. It is ideal for quick statistical summaries of geospatial or environmental survey data without requiring external data sources, predictions, or live lookups. Prefer this over general-purpose analytics tools when you want a low-cost ($0.01), self-contained dual-report on supplied elevation data.

## Known failure modes

- Input array exceeds 200 rows — request rejected
- Invalid date format (must match YYYY-MM-DD pattern)
- Missing required fields (row_id, station_group, date, elevation_m, sample_weight) — validation error
- Minimum value greater than maximum value — may return empty interval filter results
- Null numeric values in elevation_m or sample_weight may be excluded from interval filter
- Payment of 0.01 USDC not provided — 402 Payment Required response

## How this service works

Elevation samples — Category frequencies + Numeric interval filter: Category frequencies + Numeric interval filter for supplied elevation samples records (elevation_m, sample_weight). 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) category frequency counts showing how many records fall into each category group (e.g. by station_group), and (2) a filtered subset of rows where the specified numeric field (elevation_m or sample_weight) falls within the provided minimum–maximum interval. Results cover up to 200 input rows and are computed locally without any external lookup or prediction.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "row_id",
     "station_group",
     "date",
     "elevation_m",
     "sample_weight"
    ],
    "properties": {
     "date": {
      "type": "string",
      "default": "",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "maxLength": 10
     },
     "row_id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "elevation_m": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "sample_weight": {
      "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",
     "elevation_m": 10,
     "sample_weight": 1,
     "station_group": "group-a"
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "elevation_m": 20,
     "sample_weight": 2,
     "station_group": "group-b"
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "elevation_m": 15,
     "sample_weight": 3,
     "station_group": "group-a"
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "elevation_m": 30,
     "sample_weight": 4,
     "station_group": "group-b"
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "elevation_m",
    "sample_weight"
   ],
   "type": "string",
   "default": "elevation_m"
  },
  "maximum": {
   "type": "number",
   "default": 100,
   "maximum": 1000000000000,
   "minimum": -1000000000000
  },
  "minimum": {
   "type": "number",
   "default": 0,
   "maximum": 1000000000000,
   "minimum": -1000000000000
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/elevation-samples-category-frequencies-numeric-interval-filter-1d021901/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)