Japan Public Holidays for Claude.ai

dev.omikuji/holiday

Japanese national holidays, substitute holidays, business days and long weekends (Cabinet Office).

client:Claude.ai transport:streamable-http tools:4

Install Japan Public Holidays in Claude.ai

Settings → Connectors → Add custom connector

https://holiday.omikuji.dev/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

check_dates
list_holidays
business_days
find_long_weekends

Japan Public Holidays in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

Japan Public Holidays MCP server