MCP tool
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"}
The is_holiday tool is provided by PlugRail Japanese Calendar. Install that server in your AI client and the assistant can call it directly.
Servers exposing is_holiday
From the publisher: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"}
Install PlugRail Japanese Calendar →Parameter Type Description date*string YYYY-MM-DD形式の日付。例: "2026-01-01"
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.