plugrail MCP server

Which servers in the official MCP registry are plugrail's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-15

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Whose server it is

Registry namedev.plugrail/jp-calendarverified in the MCP registry

The registry name sits under plugrail.dev. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-15

Stateanswerschecked 2026-10-15
Tools4
Server calls itselfjp-calendar
Server version0.2.0
Protocol version2025-06-18

On 2026-10-15 the server answered initialize and tools/list without a sign-in. First answer in 1219 ms.

Tools it offers4 tools · read 2026-10-15

is_holiday
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"}
list_holidays
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"}
add_business_days
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…
business_days_between
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…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

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

Other servers listed as plugrail's

dev.plugrail/jp-corporateanswers, 6 toolsverified in the MCP registry
dev.plugrail/jp-recallanswers, 2 toolsverified in the MCP registry

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.