Workday Calendar for Claude.ai

dev.workers.regnotes.workday-calendar/workday-calendar

Public holidays and business-day math (T+N, counts) for many countries; pay per call via x402

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

Install Workday Calendar in Claude.ai

Settings → Connectors → Add custom connector

https://workday-calendar.regnotes.workers.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

business_day
business_days_add
business_days_count
holidays

Workday Calendar in other clients

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

Workday Calendar MCP server