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PlugRail Japanese Calendar MCP Server

@plugrail

RepositoryDocumentation

Basic information

Category

Developer Tools

Last updated

License

MIT

Author

plugrail

Submitted by

naokazuyokoo

About PlugRail Japanese Calendar MCP Server

Japanese holiday and business-day calculations using official Japan Cabinet Office data.

#japan#holidays#business-days#calendar#date#remote

PlugRail Japanese Calendar MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "jp-calendar": {
      "url": "https://jp-calendar.plugrail.dev/mcp"
    }
  }
}

PlugRail Japanese Calendar MCP Server tools

4

指定した日付が日本の祝日（国民の祝日・休日）かどうかを判定します。内閣府公表データに基づきます。入力例: {"date": "2026-01-01"}

指定した年または期間の日本の祝日一覧を返します。入力例: {"year": 2026} または {"from": "2026-01-01", "to": "2026-06-30"}

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}

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"}

Overview

What is Servers?

A collection of MCP servers that connect to Japanese public data. The name alone does not describe the project, so plugrail is not related to railways or railway services.

How to use Servers?

Follow the repository README to install the server and add its MCP configuration to your client.

Key features of Servers

  • MCP server integration

Use cases of Servers

  • Connect an MCP-compatible client to this repository's service.
  • Review the README-backed setup before enabling it in production.

Frequently asked questions

1

Where is the source code for Servers?

The source code is linked from the repository URL on this page.

2

Does Servers include a standard MCP config?

If the README contains a parseable MCP configuration block, it is shown in the Config tab.

Comments

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