Google Calendar MCP Server

# Changelog All notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). ## [0.0.3] - 2025-11-28 ### Added - **Multiple Concurrent Authentication Sessions Support**: Refactored OAuth authentication to properly handle multiple concurrent authentication requests - Introduced `AuthSession` class to manage individual authentication sessions - Automatically cancels previous sessions when a new authentication is initiated - Prevents port conflicts and authentication state confusion - **Force Re-authentication**: Added `force` parameter to `authenticate` tool to allow switching Google accounts without restarting Claude Desktop - **Japanese README**: Added comprehensive Japanese documentation ([README.ja.md](README.ja.md)) ### Fixed - **OAuth Server Lifecycle**: Improved server shutdown logic between authentication sessions - **Concurrent Auth Handling**: Fixed issues where multiple authentication attempts could interfere with each other - **Session State Management**: Better cleanup of timers and callbacks when sessions are cancelled - **TypeScript Type Safety**: Enhanced type handling for OAuth server instances ### Changed - **Authentication Flow**: Sessions now properly cancel and cleanup when a new authentication is initiated - **Server Management**: OAuth server now properly shuts down between authentication attempts ### Documentation - Fixed typo in test coverage command in [CLAUDE.md](CLAUDE.md) - Updated version script documentation to remove outdated information - Added comprehensive Japanese documentation ## [0.0.2] - 2025-11-27 ### Fixed - **Token Persistence Issues**: Fixed issues where tokens were not properly persisted or refreshed across application restarts - **Token Refresh Logic**: Improved token refresh handling when only refresh token is available (access token expired) ## [0.0.1] - 2025-11-24 ### Added - Initial release with core functionality - **Google Calendar Integration**: Full CRUD operations for calendar events - **OAuth2 Authentication**: Secure authentication with PKCE flow - **Token Encryption**: AES-256-GCM encryption for token storage - **Token Persistence**: Tokens saved to `~/.google-calendar-mcp/tokens.json` - **Automatic Encryption Key Generation**: Key auto-generated and saved to `~/.google-calendar-mcp/encryption-key.txt` - **MCP Server Implementation**: STDIO transport for Claude Desktop integration - **Event Color Support**: Ability to set and update event colors using colorId parameter - **Recurrence Support**: RFC5545 format for recurring events - **Manual Authentication Mode**: Support for environments where localhost is not accessible - **Security Features**: Helmet.js headers, rate limiting, input validation with Zod [Unreleased]: https://github.com/naotaka3/google-calendar-mcp/compare/v0.0.3...HEAD [0.0.3]: https://github.com/naotaka3/google-calendar-mcp/compare/v0.0.2...v0.0.3 [0.0.2]: https://github.com/naotaka3/google-calendar-mcp/compare/v0.0.1...v0.0.2 [0.0.1]: https://github.com/naotaka3/google-calendar-mcp/releases/tag/v0.0.1