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Workday Calendar API – Business Days Add
x402
Workday Calendar API – Business Days Add is a paid API for AI agents from workday-calendar.regnotes.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-30).
Returns the date that is N business days after (or before) a given start date in a specified country, skipping weekends and national holidays.
Price / call$0.002
Success—
StatusUnknown
How this service works
Date that is N business days after (or before, if negative) a start date in a country. Typical use: T+2 settlement, SLA and filing deadlines.
Output
A JSON object containing the calculated result date (YYYY-MM-DD), the original start date, the number of days requested, the country code, and an array of skipped holidays with their dates and names that fell within the offset window.
Example use cases
T+2 trade settlement date
“A trade was executed on November 25, 2026 in the US market — what's the T+2 settlement date, skipping weekends and US public holidays like Thanksgiving?”
SLA deadline for UK support ticket
“A support ticket was opened on March 10, 2025 in the UK, and our SLA requires resolution within 5 business days — what's the deadline date, excluding UK public holidays?”
Tax filing deadline in Germany
“I need to file a document 30 business days after January 15, 2026 under German business day rules — what exact date does that land on?”
Technical details
Endpoint
GEThttps://workday-calendar.regnotes.workers.dev/v1/business-days/add?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to offset a date by a specific number of business days while correctly accounting for country-specific national holidays and weekend definitions. It is ideal for financial settlement (T+N), SLA deadline computation, regulatory filing deadlines, and contract milestone tracking across 50+ countries. Prefer this over a generic date library when country-aware holiday exclusion is required without maintaining your own holiday database.
Side effects
- Invalid date format (not YYYY-MM-DD) returns a 400 error
- Country code not in the supported enum list returns a 400 validation error
- Days value outside the allowed range (-999 to 999) returns a validation error
- Network timeout or worker unavailability returns a 5xx error
- Payment failure via x402 protocol results in a 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"days": 2,
"start": "2026-11-25",
"result": "2026-11-30",
"country": "US",
"skipped_holidays": [
{
"date": "2026-11-26",
"name": "Thanksgiving Day"
}
]
}
}Tags
x402
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