# Services from workday-calendar.regnotes.workers.dev on Zero

> workday-calendar.regnotes.workers.dev serves 4 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/workday-calendar.regnotes.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/workday-calendar.regnotes.workers.dev/health.json

## Services

- [Workday Calendar API – Business Days Add](https://www.zero.xyz/c/workday-calendar-api-business-days-add-6fa7bd7b/llms.txt): $0.002/call via x402. Returns the date that is N business days after (or before) a given start date in a specified country, skipping weekends and national holidays.
- [Workday Calendar API – Single Date Business Day Check](https://www.zero.xyz/c/workday-calendar-api-single-date-business-day-check-1e1b490b/llms.txt): $0.001/call via x402. Returns whether a specific date is a business day in a given country, accounting for public holidays, weekends, and make-up workdays, plus the adjacent previous and next business days.
- [Workday Calendar API – Public Holidays](https://www.zero.xyz/c/workday-calendar-api-public-holidays-8ea91020/llms.txt): $0.002/call via x402. Returns all national public holidays for a given country and year, including weekend definitions and official make-up workdays.
- [Workday Calendar API – Business Day Count](https://www.zero.xyz/c/workday-calendar-api-business-day-count-d8761a89/llms.txt): $0.002/call via x402. Returns the number of business days between two dates (inclusive) for a given country, along with any public holidays that fell on weekdays in that range.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)