Operations coordinator
Business Days and Holidays uses the Nager.Date and OpenHolidays calendars and says how it counted: which weekend days, which holidays, and whether the start and end dates were included.
Tasks these servers can do
How many working days are there between 14 July and 18 August 2026 in Germany?
Call count_business_days on Business Days and Holidays (https://businessdays.openkrill.app/mcp). A count, the weekend rule, and the holidays that fell in the range. It does not know your company's extra closure days.
Install steps: ChatGPT, Claude, Cursor, Pi.
What date is 37 business days after 11 August 2026 in England?
Call add_business_days on Business Days and Holidays (https://businessdays.openkrill.app/mcp). The resulting date, with the holidays that were skipped. It is not a legal deadline calculator.
Install steps: ChatGPT, Claude, Cursor, Pi.
What are the public holidays in Bavaria in 2027?
Call list_holidays on Business Days and Holidays (https://businessdays.openkrill.app/mcp). Public holidays, and school holidays when you ask for that kind, from the published calendars.
Install steps: ChatGPT, Claude, Cursor, Pi.
What they will not do
A contract that uses a different weekend, or a local observance the calendar does not list, will not match. Say the country and, when it matters, the region. Document Tools can turn a resulting date into an .ics file if you need a calendar invite.
Where to start
Each link above is a client-specific install page with one call that was checked against the live server. The plain-text list of every server is llms.txt. The words MCP, tool and streamable HTTP are defined in the MCP glossary.