# Duplicate Observations Analytics — Duplicate Key Report + Two-Measure Correlation

> Duplicate Observations Analytics — Duplicate Key Report + 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 2026-10-20).

Analyzes up to 200 rows of duplicate observation records to produce a duplicate key report and a two-measure correlation analysis between duplicate_rows and total_rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-analytics-04-066?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/duplicate-observations-analytics-duplicate-key-report-two-measure-17a1a183
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Wa1ShFxZPPsKZZnHkHlt1

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 duplicate-observations-analytics-duplicate-key-report-two-measure-17a1a183 -d '<json body>'
```

Example prompt: Run a duplicate key report and two-measure correlation on my dataset observations — I have 4 rows: group-a on 2026-10-01 with 10 duplicate rows out of 1 total, group-b on 2026-10-02 with 20 duplicates out of 2 total, group-a on 2026-10-03 with 15 duplicates out of 3 total, and group-b on 2026-10-04 with 30 duplicates out of 4 total.

## When to prefer this

Choose this endpoint when you need both a duplicate key diagnostic report AND a statistical correlation between two numeric measures (duplicate_rows vs total_rows) in a single low-cost call. Best suited for data quality pipelines, ETL audits, or dataset health checks where up to 200 rows of grouped, dated observations are already available locally and no external data enrichment or live lookup is needed.

## Known failure modes

- Input array exceeds 200 rows — request rejected
- Missing required fields (row_id, dataset_group, date, duplicate_rows, total_rows) cause validation errors
- Date field not matching YYYY-MM-DD pattern causes schema rejection
- Payment of 0.01 USDC not attached or not processed via x402 protocol
- Null values in duplicate_rows or total_rows may affect correlation computation

## How this service works

Duplicate observations — Duplicate key report + Two-measure correlation: Duplicate key report + Two-measure correlation for supplied duplicate observations records (duplicate_rows, total_rows). 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 analytical reports: (1) a duplicate key report identifying duplicate key occurrences and patterns within the supplied row data, and (2) a two-measure correlation analysis between the duplicate_rows and total_rows fields across the supplied records — all computed locally against the submitted data without external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/duplicate-observations-analytics-duplicate-key-report-two-measure-17a1a183/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)