Polish Holidays MCP server

This is a small helper that lets your AI answer questions about Polish public holidays and working days. It is handy if you deal with invoices, payment terms, or deadlines and you are tired of counting days on your fingers. You ask in plain words, and it does the calendar math.

What this MCP server does

You ask your AI something like when an invoice with a 14 working-day term is due. Your AI passes the question to this helper. The helper checks Polish public holidays and weekends, then counts the days. It hands the answer back, and your AI tells you the date in the chat.

What you can do with it

• Find the due date after a number of working days
• Check if a specific date is a public holiday in Poland
• Check if a date is a normal working day
• Count working days between two dates
• List all public holidays in a given year
• See the next upcoming holidays from today

Try asking your AI

• “Invoice issued today with a 14 working-day payment term, when is it due?”
• “Is May 1st 2026 a business day in Poland?”
• “How many working days are there between 2026-04-01 and 2026-04-30?”
• “What are the next three public holidays in Poland?”

What it gives back to you

You get a clear answer in the chat, like a date, a yes or no, or a number of days. For holiday lists you get a short list with names and dates. If a date is not a working day, it also tells you why, for example because it is a weekend or a holiday.

Before you start

Who it's for

This is most useful for accountants, small business owners, and HR people in Poland who work with payment terms and deadlines.

Jobs it suits