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mcp/harbor
Verified official

Japan Public Holidays MCP

v1.0.0

dev.omikuji/holiday

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

transport:streamable-http tools:4
Website

Target client

run in your project directory 

claude mcp add --transport http holiday https://holiday.omikuji.dev/mcp

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

check_dates Read-only

check dates

list_holidays Read-only

list holidays

business_days

business days

find_long_weekends Read-only

find long weekends

All 4 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.