# API Usage Imports — Calendar Date Check

> API Usage Imports — Calendar Date Check is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-24).

Validates calendar date fields in a CSV of API usage import records, checking up to 1000 rows for date correctness and contract compliance.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-csv-api-usage-dates?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/api-usage-imports-calendar-date-check-378e4580
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0s9N7ObbsK1GWZtJuGrAg

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 api-usage-imports-calendar-date-check-378e4580 -d '<json body>'
```

Example prompt: Can you validate the calendar dates in my API usage imports CSV? Here's the data with comma delimiter — check that all the observed_on values are valid calendar dates across the rows.

## When to prefer this

Choose this endpoint when you need a low-cost ($0.01 USDC), focused validation of calendar date fields specifically within API usage import CSVs, without needing external enrichment or complex schema validation. It is ideal for pre-import quality checks on usage tracking data where date correctness is the primary concern and row counts are under 1000.

## Known failure modes

- CSV exceeds 100,000 character limit — request rejected
- More than 1000 rows submitted — only up to 1000 rows processed
- Invalid delimiter specified — must be comma, semicolon, or tab
- Cell length exceeds max_cell_length setting — row flagged or rejected
- Malformed CSV (unbalanced quotes, missing columns) — parse error returned
- Empty CSV string — validation cannot proceed

## How this service works

API usage imports — Calendar date check: Calendar date check for API usage 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 calendar date check report.

## Output

A calendar date check report covering up to 1000 CSV rows, identifying which rows contain valid or invalid date values in the declared date column, along with a summary of compliance against the declared CSV table contract.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "csv": {
   "type": "string",
   "default": "usage_id,observed_on,endpoint_id,request_count,error_count\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/api-usage-imports-calendar-date-check-378e4580/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)