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Kaisha Japanese Business Day Calculator
x402
Kaisha Japanese Business Day Calculator is a paid API for AI agents from kaisha-api.hp-vladic.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Checks if a date is a Japanese business day, adds N business days to a date, or counts business days in a range, accounting for Japanese national holidays and optional Saturday/year-end rules.
Price / call$0.002
Success—
StatusUnknown
How this service works
Japanese business-day calculator: check if a date is a business day, add N business days to a date, or count business days in a range. Accounts for weekends and Japanese national holidays; optional Saturday and year-end/new-year rules.
Output
Returns whether a given date is a Japanese business day, the resulting date after adding N business days, or the count of business days within a specified date range — all adjusted for Japanese national holidays and optional Saturday/new-year-break rules.
Example use cases
Example prompt
“How many Japanese business days are there between 2024-12-20 and 2025-01-15, treating Saturdays and the year-end/new-year break as non-working days?”
Technical details
Endpoint
GEThttps://kaisha-api.hp-vladic.workers.dev/calendar/business-daysWhen to prefer
Use this endpoint when you need Japan-specific business day calculations that account for official Japanese national holidays from the Cabinet Office dataset. Prefer this over generic weekday calculators when the context is Japanese business, finance, contracts, or HR operations. Especially useful when Saturday-off or year-end/new-year break rules are relevant to the calculation.
Side effects
- Missing required 'from' date parameter returns an error
- Invalid date format (non-YYYY-MM-DD) causes a parsing failure
- Year outside supported holiday data range may return incomplete results
- Conflicting mode parameters (both 'add' and 'to' specified) may cause ambiguous behavior
- Network timeout from the Cloudflare Worker edge
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"from": "2026-07-17",
"result": "2026-07-27",
"addBusinessDays": 5,
"resultIsHoliday": null
}
}Tags
x402
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