WorkdayAPI

Server Details

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

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Status: Healthy
Last Tested: 2026-10-13 07:12
Transport: Streamable HTTP · MCP 2025-11-25
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TDQS

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Available Tools

5 tools

add_business_daysAdd or subtract business days from a date

Read-onlyIdempotent

Inspect

Add (or, with a negative number, subtract) business days to a date, skipping weekends and public holidays of the country (and region). Returns the result date and the holidays skipped. Read-only. Same engine, cache and limits as GET /v1/add.

ParametersJSON Schema

Name	Required	Description
`date`	Yes	Start date, YYYY-MM-DD (2020-2035).
`days`	Yes	Business days to add; negative counts backwards.
`types`	No	Optional holiday types that close business days: comma list of public, bank (default: public; "all" = public,bank).
`region`	No	Optional region/state code for countries with regional holidays, e.g. DE-BY, US-CA (or just BY).
`country`	Yes	ISO 3166-1 alpha-2 country code, e.g. US, DE, GB. See list_countries.
`weekend`	No	Optional weekend days, comma list of day names like "sat,sun" (default) or "fri,sat", or "none".

Output Schema

ParametersJSON Schema

Name	Required	Description
`date`	Yes
`days`	Yes
`region`	No
`result`	Yes
`country`	No
`weekend`	No
`calendar_days`	No
`holiday_types`	No
`result_weekday`	No
`skipped_holidays`	No
`skipped_holidays_truncated`	No

business_days_betweenCount business days between two dates

Read-onlyIdempotent

Inspect

Count business days between two dates in a country (and region), excluding weekends and public holidays. The end date is excluded unless inclusive is true. Returns business, weekend and holiday day counts and the holidays in the range. Read-only. Same engine, cache and limits as GET /v1/between.

ParametersJSON Schema

Name	Required	Description
`to`	Yes	End date, YYYY-MM-DD (2020-2035).
`from`	Yes	Start date, YYYY-MM-DD (2020-2035).
`types`	No	Optional holiday types that close business days: comma list of public, bank (default: public; "all" = public,bank).
`region`	No	Optional region/state code for countries with regional holidays, e.g. DE-BY, US-CA (or just BY).
`country`	Yes	ISO 3166-1 alpha-2 country code, e.g. US, DE, GB. See list_countries.
`weekend`	No	Optional weekend days, comma list of day names like "sat,sun" (default) or "fri,sat", or "none".
`inclusive`	No	Count the end date too (default false).

Output Schema

ParametersJSON Schema

Name	Required	Description
`to`	Yes
`from`	Yes
`region`	No
`country`	No
`weekend`	No
`holidays`	No
`inclusive`	No
`holiday_days`	No
`weekend_days`	No
`business_days`	Yes
`calendar_days`	No
`holiday_types`	No
`holidays_truncated`	No

get_holidaysList public holidays for a country and year

Read-onlyIdempotent

Inspect

List the public (and optionally bank/observance) holidays for one country (and region) in one year, 2020-2035, with local names, types and official source links. Read-only. Same data, cache and limits as GET /v1/holidays.

ParametersJSON Schema

Name	Required	Description
`year`	Yes	Year, 2020-2035.
`types`	No	Optional comma list of public, bank, observance, or "all" (default: all).
`region`	No	Optional region/state code for countries with regional holidays, e.g. DE-BY, US-CA (or just BY).
`country`	Yes	ISO 3166-1 alpha-2 country code, e.g. US, DE, GB. See list_countries.

Output Schema

ParametersJSON Schema

Name	Required	Description
`year`	Yes
`count`	Yes
`notes`	No
`scope`	No
`region`	No
`country`	Yes
`sources`	No
`holidays`	Yes
`region_name`	No
`country_name`	No
`data_version`	No

is_business_dayCheck whether a date is a business day

Read-onlyIdempotent

Inspect

Check whether a date is a business day in a country (and region), considering weekends and public holidays. Returns the reason (weekend or holiday name) plus the previous and next business days. Read-only. Same engine, cache and limits as GET /v1/is-business-day.

ParametersJSON Schema

Name	Required	Description
`date`	Yes	Date to check, YYYY-MM-DD (2020-2035).
`types`	No	Optional holiday types that close business days: comma list of public, bank (default: public; "all" = public,bank).
`region`	No	Optional region/state code for countries with regional holidays, e.g. DE-BY, US-CA (or just BY).
`country`	Yes	ISO 3166-1 alpha-2 country code, e.g. US, DE, GB. See list_countries.
`weekend`	No	Optional weekend days, comma list of day names like "sat,sun" (default) or "fri,sat", or "none".

Output Schema

ParametersJSON Schema

Name	Required	Description
`date`	Yes
`reason`	Yes
`region`	No
`country`	No
`holiday`	No
`weekday`	No
`weekend`	No
`business_day`	Yes
`holiday_types`	No
`next_business_day`	No
`previous_business_day`	No

list_countriesList supported countries and regions

Read-onlyIdempotent

Inspect

List the supported countries (ISO codes), their regions and the supported year range. Read-only. Same data and limits as GET /v1/countries.

ParametersJSON Schema

Name	Required	Description	Default
No parameters

Output Schema

ParametersJSON Schema

Name	Required	Description
`count`	Yes
`years`	No
`countries`	Yes
`data_version`	No

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

5 tool updatesOct 12, 2026
- First observedadd_business_days
- First observedbusiness_days_between
- First observedget_holidays
- First observedis_business_day
- First observedlist_countries

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