Japan Public Holidays for ChatGPT

dev.omikuji/holiday

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

client:ChatGPT transport:streamable-http tools:4

Install Japan Public Holidays in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://holiday.omikuji.dev/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs