Multi Calendar for Claude.ai
co.lumman/calendar
Outlook.com, Microsoft 365, Google calendars: free time, events, invitations, booking pages, polls.
client:Claude.ai
transport:streamable-http
Install Multi Calendar in Claude.ai
Settings → Connectors → Add custom connector
https://calendar.lumman.co/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