# Tutoring Sessions — Adjacent Row Changes + Two-Measure Correlation

> Tutoring Sessions — 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 2026-10-24).

Computes adjacent row changes and two-measure correlation for tutoring session data (session_minutes, session_count) on up to 200 rows, returning two analytical reports.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-education-16-158?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tutoring-sessions-adjacent-row-changes-two-measure-correlation-8ed5a5ce
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hk0HQCmLm_epNZZ10-UnA

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 tutoring-sessions-adjacent-row-changes-two-measure-correlation-8ed5a5ce -d '<json body>'
```

Example prompt: Can you analyze my tutoring session records and show me both how session_minutes changed row by row and the correlation between session_minutes and session_count? I have data for about 50 sessions across two course groups, with dates and row IDs.

## When to prefer this

Choose this endpoint when you have tutoring session tabular data and need both a sequential row-change analysis and a cross-measure correlation between session_minutes and session_count in a single call. It is ideal for education analytics workflows where you want to detect temporal shifts and metric relationships without external lookups or prediction services. Best suited for datasets up to 200 rows where offline, deterministic statistical computation is sufficient.

## Known failure modes

- More than 200 rows submitted — request rejected or truncated
- Missing required fields (row_id, date, course_group, session_minutes, session_count) — validation error
- Invalid date format (must be YYYY-MM-DD) — schema validation failure
- Null values in both measure fields — insufficient data for correlation computation
- Empty rows array — no data to analyze

## How this service works

Tutoring sessions — Adjacent row changes + Two-measure correlation: Adjacent row changes + Two-measure correlation for supplied tutoring sessions records (session_minutes, session_count). 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) adjacent row changes showing how session_minutes or session_count values shift from one row to the next, and (2) a two-measure correlation report quantifying the relationship between session_minutes and session_count across the supplied rows (up to 200 rows total).

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tutoring-sessions-adjacent-row-changes-two-measure-correlation-8ed5a5ce/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)