The real catalog of tools for AI agents

Public holidays of about 200 countries for any year: national and regional holidays, next holidays, is a date a holiday. Free, no API key.

Public holidays for 100+ countries — by year, or the next ones coming up. Via Nager.Date.

Public holidays for 150+ countries, business-day maths and timezone lookup

Public holiday data for 30+ countries. Check holidays, working days and calendars via AI assistants.

Government and OpenHolidays calendars: regional scope, multilingual names, dated sources and gaps.

Public holidays, business days and long weekends for Japan (Cabinet Office) and 245 other countries.

Public holidays and working-day maths for 200+ countries, cross-checked across three providers.

Free, keyless public holidays lookup for any country and year, plus single-date holiday checks.

Compute deadlines in business days with public holidays (200+ countries). $0.002/call.

Public holidays and working-day math for 200+ countries and regions, local weekends. No keys.

Nager and Open Holidays public holidays.

U.S. federal holidays with observed dates and business-day math. Example from an open-source kit.

Plan annual leave around public holidays: bridge days and long weekends for 200+ countries.

Public holidays (UK, US, DE, FR), tax-year dates and DST switches for 2026-2028.

Enrico (kayaposoft) holiday API: public holidays by country and year.

Nager.Date Public Holidays MCP.

Latvian public holidays, days off and annual leave for 2026 and 2027, computed from Latvian law.

Public holidays, business days, VAT, withholding tax and tax-ID checks for 54 African countries

Business-day and public-holiday math for 29 countries: add business days, days between, holidays.

Official Korean public holidays incl. substitute holidays (KASI) — paid per call (x402/credits), 1 …