WorkdayAPI

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

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

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "WorkdayAPI": {
      "url": "https://workdayapi.mike-tusa.workers.dev/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (5)

• get_holidays read-only

  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.

  Parameters:

  • country (required) — string — ISO 3166-1 alpha-2 country code, e.g. US, DE, GB. See list_countries.
  • year (required) — integer — Year, 2020-2035.
  • types — string — Optional comma list of public, bank, observance, or "all" (default: all).
  • region — string — Optional region/state code for countries with regional holidays, e.g. DE-BY, US-CA (or just BY).

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• is_business_day read-only

  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.

  Parameters:

  • country (required) — string — ISO 3166-1 alpha-2 country code, e.g. US, DE, GB. See list_countries.
  • date (required) — string — Date to check, YYYY-MM-DD (2020-2035).
  • types — string — Optional holiday types that close business days: comma list of public, bank (default: public; "all" = public,bank).
  • region — string — Optional region/state code for countries with regional holidays, e.g. DE-BY, US-CA (or just BY).
  • weekend — string — Optional weekend days, comma list of day names like "sat,sun" (default) or "fri,sat", or "none".

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• add_business_days read-only

  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.

  Parameters:

  • country (required) — string — ISO 3166-1 alpha-2 country code, e.g. US, DE, GB. See list_countries.
  • date (required) — string — Start date, YYYY-MM-DD (2020-2035).
  • days (required) — integer — Business days to add; negative counts backwards.
  • types — string — Optional holiday types that close business days: comma list of public, bank (default: public; "all" = public,bank).
  • region — string — Optional region/state code for countries with regional holidays, e.g. DE-BY, US-CA (or just BY).
  • weekend — string — Optional weekend days, comma list of day names like "sat,sun" (default) or "fri,sat", or "none".

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• business_days_between read-only

  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.

  Parameters:

  • country (required) — string — ISO 3166-1 alpha-2 country code, e.g. US, DE, GB. See list_countries.
  • from (required) — string — Start date, YYYY-MM-DD (2020-2035).
  • to (required) — string — End date, YYYY-MM-DD (2020-2035).
  • types — string — Optional holiday types that close business days: comma list of public, bank (default: public; "all" = public,bank).
  • region — string — Optional region/state code for countries with regional holidays, e.g. DE-BY, US-CA (or just BY).
  • weekend — string — Optional weekend days, comma list of day names like "sat,sun" (default) or "fri,sat", or "none".
  • inclusive — boolean — Count the end date too (default false).

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• list_countries read-only

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

  Hints: read-only yes · destructive no · idempotent yes · open-world no

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