# Lesson Attendance String Normalisation and Numeric Row Ordering

> Lesson Attendance String Normalisation and Numeric Row Ordering 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).

Normalises string fields and produces numeric row ordering reports for up to 200 lesson attendance records across two independent analytical reports.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-education-01-025?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/lesson-attendance-string-normalisation-and-numeric-row-ordering-d1ef6c91
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_a0oZUkF7XytOkXQmSQola

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 lesson-attendance-string-normalisation-and-numeric-row-ordering-d1ef6c91 -d '<json body>'
```

Example prompt: Can you run string normalisation and numeric row ordering on these lesson attendance records — I have 4 rows with course groups group-a and group-b, dates from 2026-10-01 to 2026-10-04, attendees ranging from 10 to 30, and registered_students from 1 to 4 — please use the attendees field for ordering and give me both reports.

## When to prefer this

Choose this endpoint when you have up to 200 lesson attendance records and need both string normalisation of course group labels and numeric ordering of rows by attendees or registered students in a single low-cost call, without needing live lookups, predictions, or external integrations.

## Known failure modes

- Input array is empty (minItems:1 violated)
- More than 200 rows supplied (maxItems:200 exceeded)
- Date field does not match YYYY-MM-DD pattern
- row_id missing or empty string
- Numeric fields outside allowed range (-1e12 to 1e12)
- Invalid field enum value supplied

## How this service works

Lesson attendance — String normalisation + Numeric row ordering: String normalisation + Numeric row ordering for supplied lesson attendance records (attendees, registered_students). 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

Two independent analytical reports: (1) a string normalisation report covering the course_group field across up to 200 rows, and (2) a numeric row ordering report ranking rows by the selected field (attendees or registered_students), all computed locally without external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lesson-attendance-string-normalisation-and-numeric-row-ordering-d1ef6c91/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)