# Reading Activity Duplicate Key Report + Adjacent Row Changes

> Reading Activity Duplicate Key Report + Adjacent Row Changes is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-11-02).

Analyzes up to 200 reading activity records (pages_read, reading_minutes) to produce two local analytical reports: a duplicate key report and an adjacent row changes series.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-education-04-062?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/reading-activity-duplicate-key-report-adjacent-row-changes-3aac73ea
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LCU_DqLW2FKoXGt3j6gZU

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 reading-activity-duplicate-key-report-adjacent-row-changes-3aac73ea -d '<json body>'
```

Example prompt: Check my reading activity records for duplicate row IDs and show me how pages_read changes between adjacent rows — I have about 50 entries with fields like row_id, course_group, date, pages_read, and reading_minutes.

## When to prefer this

Choose this endpoint when you need two simultaneous data quality checks — duplicate key detection and sequential delta analysis — on reading activity records in a single low-cost call. Ideal for education data pipelines where you want to validate row uniqueness and spot anomalous jumps between consecutive readings before ingestion, without needing live lookups or external data enrichment.

## Known failure modes

- Fewer than 1 or more than 200 rows supplied returns a validation error
- Missing required fields (row_id, course_group, date, pages_read, reading_minutes) cause schema rejection
- Invalid date format (not YYYY-MM-DD) triggers pattern validation failure
- Numeric fields outside the allowed range cause rejection
- Invalid field enum value (not pages_read or reading_minutes) returns an error

## How this service works

Reading activity — Duplicate key report + Adjacent row changes: Duplicate key report + Adjacent row changes for supplied reading activity records (pages_read, reading_minutes). 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 duplicate key report identifying any rows sharing the same row_id, and (2) an adjacent row changes series showing the difference in the selected field (pages_read or reading_minutes) between consecutive rows. All analysis is performed locally on the supplied data with no external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/reading-activity-duplicate-key-report-adjacent-row-changes-3aac73ea/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)