# Research Task Completion — Adjacent Row Changes + Two-Measure Correlation

> Research Task Completion — Adjacent Row Changes + 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 2026-10-21).

Analyzes research task completion records by computing adjacent row changes and two-measure correlation between completed_tasks and assigned_tasks for up to 200 rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-company-22-158?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/research-task-completion-adjacent-row-changes-two-measure-correlation-5fe6a907
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LRpTo_G87lYUhm1kpvw_D

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 research-task-completion-adjacent-row-changes-two-measure-correlation-5fe6a907 -d '<json body>'
```

Example prompt: I have research task completion records for our company groups and want two reports: one showing the adjacent row-to-row changes in completed_tasks, and another showing the correlation between completed_tasks and assigned_tasks — here are up to 200 rows with row_id, company_group, date, completed_tasks, and assigned_tasks.

## When to prefer this

Choose this endpoint when you have structured research task completion records (with completed_tasks and assigned_tasks per row) and need both a row-over-row change analysis and a correlation between the two measures in a single low-cost call. Ideal for teams tracking research output by company group over time who want quick statistical summaries without external lookups or predictions, and when the dataset fits within 200 rows.

## Known failure modes

- More than 200 rows submitted — exceeds maximum row limit
- Missing required fields (row_id, date, company_group, completed_tasks, or assigned_tasks) in one or more rows
- Invalid date format — must match YYYY-MM-DD pattern
- Field selector not one of the allowed enum values (completed_tasks, assigned_tasks)
- Null values in numeric fields causing computation errors
- Insufficient rows for meaningful correlation computation

## How this service works

Research task completion — Adjacent row changes + Two-measure correlation: Adjacent row changes + Two-measure correlation for supplied research task completion records (completed_tasks, assigned_tasks). 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 computed locally: (1) an adjacent row changes report showing the delta in the selected measure between consecutive rows, and (2) a two-measure correlation report quantifying the statistical relationship between completed_tasks and assigned_tasks across the supplied dataset of up to 200 rows.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/research-task-completion-adjacent-row-changes-two-measure-correlation-5fe6a907/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)