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Business Days Calculator
x402
Business Days Calculator is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Add or subtract business days to/from a date, or count working days between two dates, with weekend and custom holiday awareness.
Price / call$0.002
Success—
StatusUnknown
How this service works
Add/subtract business days to a date, or count working days between two dates. Weekend- and custom-holiday-aware (0=Mon..6=Sun).
Output
Returns either the resulting date after adding/subtracting the specified number of business days, or the count of working days between two given dates. Accounts for weekends (Saturday and Sunday by default) and any custom holidays provided in the request.
Example use cases
SLA deadline calculation
“Our SLA requires responding within 5 business days from when a ticket is opened. The ticket was opened on April 1, 2025 — what is the exact deadline date, excluding weekends?”
Working days between two dates
“How many business days are there between January 15, 2025 and February 28, 2025, excluding Martin Luther King Jr. Day on January 20th and Presidents' Day on February 17th?”
Invoice payment due date
“Our payment terms are net 30 business days. If I issued an invoice on May 5, 2025, what date should the payment be due, skipping weekends and the Memorial Day holiday on May 26th?”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/business-days-calcWhen to prefer
Choose this endpoint when you need reliable, calendar-aware business day arithmetic that respects weekends and custom holidays — especially for SLA tracking, invoice due dates, delivery estimates, or any scheduling workflow. Prefer it over generic date-math libraries when you need a simple, hosted, pay-per-call solution without managing holiday calendars in your own codebase.
Side effects
- Invalid date format — returns error if dates are not parseable ISO-8601 strings
- Invalid day offset — non-integer or out-of-range business day count
- Malformed holiday list — unrecognized date formats in custom holidays array
- Missing required fields — error if neither an offset nor an end date is provided
- Network timeout or service unavailability returns 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| op | string | |
| days | number | |
| start | string | |
| holidays | array |
Output
Schema · Response
{
"type": "json",
"example": {
"result": "2026-01-08"
}
}Tags
x402
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