business_days_between

4 MCP servers expose a business_days_between tool: SA Business Calendar, PlugRail Japanese Calendar, Business Day Calendars and WebRef (paid). Their input schemas differ, so compare them below before picking one.

Servers exposing business_days_between

• SA Business CalendarB · 76HTTP

  From the publisher:Count SA business days between two dates.

  Install SA Business Calendar →
• PlugRail Japanese CalendarB · 73HTTP

  From the publisher:from〜to間の営業日数を数えます。既定では「fromを含まず、toを含む」境界です（例:「今日から支払期日まで何営業日か」）。include_from/include_toで境界を変更できます。土日・日本の祝日を除外し、calendar="banking"を指定すると銀行休業日（12/31〜1/3）も除外します。from > to の場合はエラーにせず、from/toとinclude_from/include_toを入れ替えて計算した結果の符号を反転した値（負の営業日数）を返します（反対称則: count(A,B,x,y) = -count(B,A,y,x)。A≠B、すなわちfrom≠toの場合に成立する恒等式で、from===toはこの分岐に入らないため対象外）。入力例: {"from": "2026-07-10", "to": "2026-07-20"}

  Parameter	Type	Description
  from*	string	起点日 YYYY-MM-DD。例: "2026-07-10"。
  to*	string	終点日 YYYY-MM-DD。例: "2026-07-20"。fromより前の日付も指定可（結果は負の営業日数になります）。
  calendar	string	"standard"（既定）または"banking"（銀行休業日も除外）。
  extra_closed_dates	array	顧客固有の追加休業日（YYYY-MM-DD の配列）。例: ["2026-12-29", "2026-12-30"]
  include_from	boolean	fromを営業日数に含めるか。既定はfalse。
  include_to	boolean	toを営業日数に含めるか。既定はtrue。

  Install PlugRail Japanese Calendar →
• Business Day CalendarsD · 33HTTP

  From the publisher:Counts business days between two dates on a joint calendar: days after start up to and including end (inclusive=true also counts start). Negative if end is before start. Lists weekday holidays in range. Max 10 years. Deterministic, no AI. Price: $0.001 USDC per call via x402 (Base); the first 5 calls per day per client are free.

  Parameter	Type	Description
  start*	string	Start date YYYY-MM-DD
  end*	string	End date YYYY-MM-DD
  inclusive	string	true to count the start date too
  calendars	string	Comma list of calendars; a day is a business day only if open in all. XNYS (NYSE), FED (Fedwire/FedACH), TARGET2 (EUR), UK-ENG. Aliases: NYSE, US, ACH, EUR, UK. Default FED.

  Install Business Day Calendars →
• WebRef (paid)B · 65HTTP

  From the publisher:Count the business days between two dates, excluding weekends. Use it to turn a calendar deadline into a working-day deadline. Public holidays are not excluded, so the count is an upper bound. ($0.005 per call)

  Parameter	Type	Description
  from*	string	start date, YYYY-MM-DD
  to*	string	end date, YYYY-MM-DD

  Install WebRef (paid) →

Tool lists are read from the live servers (or, for packaged servers, from their documentation) each morning, so this reflects what they exposed at the last refresh. Search all tools.