# Time Series Completeness Analytics — Category Frequencies + Two-Measure Correlation

> Time Series Completeness Analytics — Category Frequencies + Two-Measure Correlation is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-15).

Analyzes time series completeness records (observed vs expected data points) to produce two reports: category frequency distribution by dataset group and correlation analysis between observed_points and expected_points.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-analytics-16-108?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/time-series-completeness-analytics-category-frequencies-two-measure-ed6266ac
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_973jwiYfCf3zU1N7wD7pN

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 time-series-completeness-analytics-category-frequencies-two-measure-ed6266ac -d '<json body>'
```

Example prompt: Can you analyze the completeness of my sensor dataset for October 2026? I have up to 200 rows with row IDs, dataset groups like 'group-a' and 'group-b', dates, and both observed and expected point counts — I need a category frequency breakdown by group and a correlation analysis between the observed and expected points.

## When to prefer this

Choose this endpoint when you have up to 200 rows of time series completeness records with observed and expected point counts and need both a categorical frequency summary and a correlation analysis in a single low-cost call ($0.01 USDC). It is ideal for lightweight, self-contained statistical reporting on data quality metrics without requiring external data sources, predictions, or professional assessment services.

## Known failure modes

- Input array exceeds 200 rows — request will be rejected or truncated
- Missing required fields (row_id, date, observed_points, expected_points) cause validation errors
- Dates not matching YYYY-MM-DD pattern fail schema validation
- Null values in observed_points or expected_points may affect correlation computation
- Fewer than 2 rows may produce degenerate or undefined correlation results
- Payment of 0.01 USDC not completed — x402 payment required before response is returned

## How this service works

Time series completeness — Category frequencies + Two-measure correlation: Category frequencies + Two-measure correlation for supplied time series completeness records (observed_points, expected_points). 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 category frequency table showing how often each dataset_group appears in the supplied rows, and (2) a two-measure correlation report quantifying the statistical relationship between observed_points and expected_points across all rows. Both reports are computed locally from the supplied data without any external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/time-series-completeness-analytics-category-frequencies-two-measure-ed6266ac/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)