Google Calendar MCP

# Changelog ## [2.2.0](https://github.com/nspady/google-calendar-mcp/compare/v2.1.0...v2.2.0) (2025-12-07) ### Features * add manage-accounts tool for in-chat account management ([#139](https://github.com/nspady/google-calendar-mcp/issues/139)) ([9d938b0](https://github.com/nspady/google-calendar-mcp/commit/9d938b0856ad0e4c74a60bd50de22a367ced8630)) * support account-id in auth CLI command ([#137](https://github.com/nspady/google-calendar-mcp/issues/137)) ([cbdf2db](https://github.com/nspady/google-calendar-mcp/commit/cbdf2dbd13e8ad758b54281ba6248d0c0bf26165)) ## [2.1.0](https://github.com/nspady/google-calendar-mcp/compare/v2.0.7...v2.1.0) (2025-12-06) ### Features * Multi-account support with smart calendar routing and security hardening ([#132](https://github.com/nspady/google-calendar-mcp/issues/132)) ([11fff7f](https://github.com/nspady/google-calendar-mcp/commit/11fff7f9206150f612c75fafca82c75dbff8268a)) * respond-to-event tool with multi-account support ([#136](https://github.com/nspady/google-calendar-mcp/issues/136)) ([7ccfae4](https://github.com/nspady/google-calendar-mcp/commit/7ccfae44be387d8f484a731a7ecd622490a424e2)) ### Bug Fixes * handle "primary" calendar alias for single-account mode ([b3949d2](https://github.com/nspady/google-calendar-mcp/commit/b3949d2b0a1402f210332d61d53d35afc0168c1f)) * prevent origin bypass via subdomain in HTTP transport ([f8cacd6](https://github.com/nspady/google-calendar-mcp/commit/f8cacd68d5509eb1872e6ebcf23723e672934ef4)) ## [Unreleased] ### Added - **Multi-account support**: Connect and manage multiple Google accounts simultaneously - Query events across all accounts with automatic result merging - Permission-based account auto-selection for write operations - Case-insensitive account nicknames and calendar name resolution - **`manage-accounts` tool**: Add, list, and remove Google accounts directly from chat - no terminal or browser needed - **Account management UI**: Web-based interface at `/accounts` endpoint (HTTP mode) - **CalendarRegistry service**: Centralized calendar discovery with caching and deduplication ### Changed - All tools now accept optional `account` parameter for explicit account selection - Read operations (list-events, list-calendars, get-freebusy) query all accounts when `account` is omitted - Write operations auto-select account with appropriate calendar permissions - Token storage format now supports multiple accounts (automatic migration from single-account format) ### Fixed - Race conditions in token refresh and cache operations - HTTP transport security hardening (origin validation, input sanitization) ### Backwards Compatibility - Fully backwards compatible: existing single-account setups work unchanged - Automatic token migration on first load (no manual intervention required) - All new parameters are optional with sensible defaults ## [2.0.7](https://github.com/nspady/google-calendar-mcp/compare/v2.0.6...v2.0.7) (2025-11-05) ### Bug Fixes * add reminders and recurrence to default event fields ([#128](https://github.com/nspady/google-calendar-mcp/issues/128)) ([#130](https://github.com/nspady/google-calendar-mcp/issues/130)) ([5b32b9b](https://github.com/nspady/google-calendar-mcp/commit/5b32b9b6f30866c9382bbbea578c457a06ac6d3f)) * return currentTime in requested timezone, not UTC ([#127](https://github.com/nspady/google-calendar-mcp/issues/127)) ([63f7aed](https://github.com/nspady/google-calendar-mcp/commit/63f7aed9f7725c90de858e1b75fa9a59d6f3c77f)) ## [2.0.6](https://github.com/nspady/google-calendar-mcp/compare/v2.0.5...v2.0.6) (2025-10-22) ### Bug Fixes * support converting between timed and all-day events in update-event ([#119](https://github.com/nspady/google-calendar-mcp/issues/119)) ([407e4c8](https://github.com/nspady/google-calendar-mcp/commit/407e4c89753932e13f9ccd55800999b4b12288be)) ## [2.0.5](https://github.com/nspady/google-calendar-mcp/compare/v2.0.4...v2.0.5) (2025-10-19) ### Bug Fixes * **list-events:** support native arrays for Python MCP clients ([#95](https://github.com/nspady/google-calendar-mcp/issues/95)) ([#116](https://github.com/nspady/google-calendar-mcp/issues/116)) ([0e91c23](https://github.com/nspady/google-calendar-mcp/commit/0e91c23c9ae9db0c0ff863cd9019f6212544f62a)) ## [2.0.4](https://github.com/nspady/google-calendar-mcp/compare/v2.0.3...v2.0.4) (2025-10-15) ### Bug Fixes * resolve macOS installation error and improve publish workflow ([ec13f39](https://github.com/nspady/google-calendar-mcp/commit/ec13f397652a864cccd003f05ddd03d4e046316f)), closes [#113](https://github.com/nspady/google-calendar-mcp/issues/113) ## [2.0.3](https://github.com/nspady/google-calendar-mcp/compare/v2.0.2...v2.0.3) (2025-10-15) ### Bug Fixes * move esbuild to devDependencies and fix publish workflow ([3900358](https://github.com/nspady/google-calendar-mcp/commit/39003589278dbab95c85f27af012293405f34f74)), closes [#113](https://github.com/nspady/google-calendar-mcp/issues/113) ## [2.0.2](https://github.com/nspady/google-calendar-mcp/compare/v2.0.1...v2.0.2) (2025-10-14) ### Bug Fixes * **auth:** improve port availability error message ([9205fd7](https://github.com/nspady/google-calendar-mcp/commit/9205fd75445702d9e49520e4183c96a93078ea46)), closes [#110](https://github.com/nspady/google-calendar-mcp/issues/110) ## [2.0.1](https://github.com/nspady/google-calendar-mcp/compare/v2.0.0...v2.0.1) (2025-10-13) ### Bug Fixes * auto-resolve calendar names and summaryOverride to IDs (closes [#104](https://github.com/nspady/google-calendar-mcp/issues/104)) ([#105](https://github.com/nspady/google-calendar-mcp/issues/105)) ([d10225c](https://github.com/nspady/google-calendar-mcp/commit/d10225ca767a0641fef118cf3d56869bf66e2421)) * Resolve rollup optional dependency issue in CI ([#102](https://github.com/nspady/google-calendar-mcp/issues/102)) ([0bc39bd](https://github.com/nspady/google-calendar-mcp/commit/0bc39bd54fdb57828b033153974e1a93e2b38737)) * Support single-quoted JSON arrays in list-events calendarId ([d2af7cf](https://github.com/nspady/google-calendar-mcp/commit/d2af7cf99e3d090bceb388cbf10f7f9649100e3c)) * update publish workflow to use release-please ([47addc9](https://github.com/nspady/google-calendar-mcp/commit/47addc95cc04e552017afd7523638795bf9f9090)) ## [2.0.2](https://github.com/nspady/google-calendar-mcp/compare/v2.0.1...v2.0.2) (2025-10-13) ### Bug Fixes * auto-resolve calendar names and summaryOverride to IDs (closes [#104](https://github.com/nspady/google-calendar-mcp/issues/104)) ([#105](https://github.com/nspady/google-calendar-mcp/issues/105)) ([d10225c](https://github.com/nspady/google-calendar-mcp/commit/d10225ca767a0641fef118cf3d56869bf66e2421)) * update publish workflow to use release-please ([47addc9](https://github.com/nspady/google-calendar-mcp/commit/47addc95cc04e552017afd7523638795bf9f9090)) ## [2.0.1](https://github.com/nspady/google-calendar-mcp/compare/v2.0.0...v2.0.1) (2025-10-11) ### Bug Fixes * Resolve rollup optional dependency issue in CI ([#102](https://github.com/nspady/google-calendar-mcp/issues/102)) ([0bc39bd](https://github.com/nspady/google-calendar-mcp/commit/0bc39bd54fdb57828b033153974e1a93e2b38737)) * Support single-quoted JSON arrays in list-events calendarId ([d2af7cf](https://github.com/nspady/google-calendar-mcp/commit/d2af7cf99e3d090bceb388cbf10f7f9649100e3c))