# Classroom Date Offset Calculator

> Classroom Date Offset Calculator is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Adds or subtracts a specified number of whole days from an ISO date, tailored for classroom scheduling workflows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/date-offset-classroom?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/classroom-date-offset-calculator-823e68ab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eGohlQeCX8W5nwcyjxQkx

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 classroom-date-offset-calculator-823e68ab -d '<json body>'
```

Example prompt: What date is 14 days after January 15, 2026? I need to set a classroom assignment deadline.

## When to prefer this

Choose this endpoint when you need a simple, reliable date offset computation specifically in an educational or classroom context, especially within automated workflows that already use the datapackvibe marketplace and x402 micropayment protocol.

## Known failure modes

- Invalid ISO date format returns an error or unexpected result
- Non-integer or missing 'days' value may cause a computation error
- Negative day offsets must be supported but behavior should be verified
- Network or payment authorization failure returns no result

## How this service works

Classroom Date offset calculator: Add or subtract whole days from an ISO date. Tailored for classroom workflows.

## Output

Returns the resulting ISO date after adding or subtracting the specified number of whole days from the input date, suitable for use in classroom scheduling logic.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "date": {
   "type": "string",
   "default": "2026-01-15"
  },
  "days": {
   "type": "number",
   "default": 14
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/classroom-date-offset-calculator-823e68ab/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)