MCP tool
add_business_days
add_business_days is a tool name used by 4 different MCP servers. They are not necessarily the same tool — here is what each one does.
4 MCP servers expose a add_business_days tool: SA Business Calendar, Holiday Calendar, PlugRail Japanese Calendar and Business Day Calendars. Their input schemas differ, so compare them below before picking one.
Servers exposing add_business_days
From the publisher:Add or subtract SA business days, skipping weekends and holidays.
Install SA Business Calendar →From the publisher:Move a number of U.S. business days forward or backward from a date, skipping weekends and observed federal holidays, for due dates, delivery windows and notice periods. The start date is not counted: 1 business day after a Friday is the next Monday, or Tuesday when that Monday is a holiday. Returns the resulting date and every holiday it skipped. Up to 1,000 business days either way.
Install Holiday Calendar →Parameter Type Description start_date*string The date to count from. It is not counted itself, written YYYY-MM-DD (for example 2026-11-26). Covers 2021 through 2100. business_days*integer Business days to move, -1000 to 1000. Negative counts backward. 0 returns the start date if it is a business day, otherwise the next one. From the publisher:指定した日付(date)の翌日から数えてN営業日目(days)の日付を返します。dateの当日は数えません。daysが負の場合は過去方向（dateの前日から遡ってN営業日目）に計算します。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。dateが営業日かどうかだけ知りたい場合は is_holiday を使ってください（days=0でも同じ情報がskipped経由で得られます）。入力例: {"date": "2026-07-10", "days": 3}
Install PlugRail Japanese Calendar →Parameter Type Description date*string 起点日 YYYY-MM-DD。例: "2026-07-10"。この日自体は数えません。 days*number 何営業日先(正)/前(負)かを表す整数。0も指定可: dateをそのまま返し、dateが非営業日ならskippedに1件（date自身とその理由）を記録します。 calendarstring "standard"（既定）または"banking"（銀行休業日も除外）。 extra_closed_datesarray 顧客固有の追加休業日（YYYY-MM-DD の配列）。例: ["2026-12-29", "2026-12-30"] From the publisher:Adds (or with negative days subtracts) N business days to a date on a joint calendar (NYSE, Fedwire/FedACH, TARGET2, UK) and lists the holidays skipped. Deterministic, no AI. Price: $0.001 USDC per call via x402 (Base); the first 5 calls per day per client are free.
Install Business Day Calendars →Parameter Type Description date*string Start date YYYY-MM-DD days*string Business days to add, -2000..2000 calendarsstring 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.
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.