# Course Grade Imports — Required Cell Check

> Course Grade Imports — Required Cell Check is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Validates a CSV of course grade records to confirm all required cells are present and non-empty, up to 1000 rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-csv-grades-required?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/course-grade-imports-required-cell-check-4630ba62
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_skT0kiuF40mvgSLO--mGl

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 course-grade-imports-required-cell-check-4630ba62 -d '<json body>'
```

Example prompt: Check my course grade CSV for any missing required cells — here's the data with columns result_id, graded_on, course_id, earned_points, possible_points, comma-delimited, and flag any rows where required fields are blank.

## When to prefer this

Choose this endpoint when you specifically need to verify that all required cells in a course grade CSV are populated before importing into a learning management system or grade database. It is optimized for the course-grade schema (result_id, graded_on, course_id, earned_points, possible_points) and supports category allowlists and numeric range constraints. Prefer this over generic CSV validators when the domain is course grades and you need a structured required-cell report rather than type conversion or statistical analysis.

## Known failure modes

- CSV exceeds 1000 rows — request rejected or truncated
- CSV string empty or missing — validation error returned
- Delimiter mismatch causes incorrect parsing and false positives
- Cell content exceeds max_cell_length — flagged or rejected
- allowed_categories list mismatch causes category validation failures
- Malformed CSV (unmatched quotes, bad escaping) causes parse errors
- Payment of 0.01 USDC not provided — 402 Payment Required response

## How this service works

Course grade imports — Required cell check: Required cell check for Course grade imports. Validate a declared CSV table contract, up to 1000 rows. Quoted cells supported; no external enrichment. Specialised preset in a shared 50-profile, 20-operation engine. 0.01 USDC includes one CSV required cell check report.

## Output

A required cell check report indicating which rows and columns have missing or empty required cells in the submitted course grade CSV, along with a summary of pass/fail status for the declared table contract.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "csv": {
   "type": "string",
   "default": "result_id,graded_on,course_id,earned_points,possible_points\nrecord-a,2026-01-01,group-a,10,2\nrecord-b,2026-01-02,group-b,20,3",
   "maxLength": 100000,
   "minLength": 1
  },
  "maximum": {
   "type": "number",
   "default": 1000000000000,
   "maximum": 1000000000000,
   "minimum": -1000000000000
  },
  "minimum": {
   "type": "number",
   "default": -1000000000000,
   "maximum": 1000000000000,
   "minimum": -1000000000000
  },
  "delimiter": {
   "enum": [
    ",",
    ";",
    "\t"
   ],
   "type": "string",
   "default": ","
  },
  "max_cell_length": {
   "type": "integer",
   "default": 1000,
   "maximum": 5000,
   "minimum": 1
  },
  "allowed_categories": {
   "type": "array",
   "items": {
    "type": "string",
    "default": "",
    "maxLength": 100,
    "minLength": 1
   },
   "default": [
    "group-a",
    "group-b"
   ],
   "maxItems": 100,
   "minItems": 0
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/course-grade-imports-required-cell-check-4630ba62/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)