20 Best Calendar MCP Servers, Compared (November 2026)

The short answer

Which one, for your situation

Top MCP servers for Calendar

The ranking, with the evidence

• 1

  Google Workspace MCP Server - Control Gmail, Calendar, Docs, Sheets, Slides, Chat, Forms & Drive

  Community favourite

  taylorwilsdon/google_workspace_mcp ↗

  Best for: A user managing Google Calendar events alongside Gmail and Drive through one MCP client: it exposes event CRUD, free/busy, out-of-office, and focus-time tools.

  The server exposes 119 tools for Google Workspace services including Gmail, Calendar, Drive, Docs, Sheets, Slides, Forms, Tasks, Contacts, and Chat, and it runs over stdio or streamable HTTP. Before choosing it, plan for Google Cloud setup and OAuth client credentials, because it uses the user's own OAuth client and GCP project.

  Score 92.9: show every number behind it

  • Adoption100 / 100 · weight 40%
    • GitHub stars89
    • PyPI downloads100
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance95 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade80
    • Commit cadence100
  • Momentum95 / 100 · weight 14%
    • Stars gained, relative to size94
    • Stars gained, absolute91
    • PyPI download trend100
  • Tool quality61 / 100 · weight 13%
    • Tool description quality53
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  92.9

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  92.9

• 2

  Google Calendar MCP

  Community favourite

  nspady/google-calendar-mcp ↗

  Best for: Managing events across work and personal Google accounts from an AI assistant: it documents multi-account and multi-calendar queries, conflict detection, and event management.

  The server is an MCP integration for Google Calendar that documents event management, multi-account and multi-calendar queries, conflict detection, and free/busy checks after OAuth authentication. It requires a Google Cloud project with the Calendar API enabled and OAuth 2.0 desktop-app credentials before first use.

  Score 87.3: show every number behind it

  • Adoption96 / 100 · weight 40%
    • GitHub stars77
    • npm downloads84
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance100 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade100
    • Commit cadence100
  • Momentum55 / 100 · weight 14%
    • Stars gained, relative to size42
    • Stars gained, absolute48
    • npm download trend86
  • Tool quality≈65 / 100 · weight 13%
    • Tool description quality≈65
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  87.3

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  87.3

• 3

  Microsoft 365 MCP Server

  Community favourite

  Softeria/ms-365-mcp-server ↗

  Best for: Microsoft 365 calendar work alongside Excel and OneDrive files: it authenticates via Microsoft Graph and exposes Calendar as a personal-account tool by default.

  The Microsoft 365 MCP Server exposes 202 tools for Microsoft Graph resources, including authentication and account selection, Graph batching, OneDrive file operations, and Excel table and range operations; its README identifies Calendar among personal-account services. Before choosing it, note that it assumes a Microsoft 365 account and an authentication step through its login tool, and the README recommends Node.js 20 or newer.

  Score 71.2: show every number behind it

  • Adoption100 / 100 · weight 40%
    • GitHub stars76
    • npm downloads99
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance95 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade80
    • Commit cadence100
  • Momentum90 / 100 · weight 14%
    • Stars gained, relative to size100
    • Stars gained, absolute81
    • npm download trend84
  • Tool quality53 / 100 · weight 13%
    • Tool description quality45
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  91.3

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  71.2

• 4

  Google Drive MCP Server

  Community favourite

  piotr-agier/google-drive-mcp ↗

  Best for: Calendar-centric desktop automation with Drive attachments: the server documents Calendar event management alongside Drive, Docs, Sheets, and Slides using local OAuth.

  The server connects an MCP client to Google Drive, Docs, Sheets, Slides, and Calendar through stdio or Streamable HTTP, with an optional gdrive:/// resource interface for direct reading and discovery. It requires Google Cloud OAuth credentials with the Drive, Docs, Sheets, Slides, and Calendar APIs enabled, and a Desktop app OAuth client before authentication.

  Score 67.8: show every number behind it

  • Adoption91 / 100 · weight 40%
    • GitHub stars59
    • npm downloads82
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance100 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade100
    • Commit cadence100
  • Momentum64 / 100 · weight 14%
    • Stars gained, relative to size84
    • Stars gained, absolute49
    • npm download trend48
  • Tool quality≈65 / 100 · weight 13%
    • Tool description quality≈65
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  86.9

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  67.8

• 5

  Nextcloud MCP Server

  Community favourite

  cbcoutinho/nextcloud-mcp-server ↗

  Best for: Nextcloud users wanting AI assistant access to calendars, notes, contacts, and files: it exposes MCP tools for those apps and authenticates with app passwords.

  Nextcloud MCP Server connects external MCP clients to a Nextcloud instance, documenting MCP tools for notes, calendars, contacts, files, recipes, and other supported apps over stdio or streamable HTTP. Before choosing it, note that it assumes a Nextcloud instance and an app-specific password, and semantic search is opt-in with Qdrant and Ollama dependencies.

  Score 66.2: show every number behind it

  • Adoption85 / 100 · weight 40%
    • GitHub stars65
    • PyPI downloads75
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance95 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade80
    • Commit cadence100
  • Momentum76 / 100 · weight 14%
    • Stars gained, relative to size97
    • Stars gained, absolute60
    • PyPI download trend56
  • Tool quality≈65 / 100 · weight 13%
    • Tool description quality≈65
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  84.9

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  66.2

• 6

  Keeper MCP Server

  Community favourite

  ridafkih/keeper.sh ↗

  Best for: Syncing multiple calendars across providers: it documents an MCP server and source/destination support for Google, Outlook, iCloud, Fastmail, CalDAV, plus pull-only iCal/ICS ingestion.

  Keeper MCP Server documents an MCP server and a REST API for managing calendars, with first-class Google Calendar, Outlook, iCloud, Fastmail, and CalDAV integrations usable as sources or destinations and pull-only iCal/ICS ingestion. The hosted version is recommended, and self-hosters must supply the server, domain, upgrades, backups, and their own Google and Microsoft sign-in apps.

  Score 66.2: show every number behind it

  • Adoption79 / 100 · weight 40%
    • GitHub stars79
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance100 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade100
    • Commit cadence100
  • Momentum84 / 100 · weight 14%
    • Stars gained, relative to size90
    • Stars gained, absolute76
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality≈65 / 100 · weight 13%
    • Tool description quality≈65
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  84.9

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  66.2

• 7

  Thunderbird MCP

  Community favourite

  TKasperczyk/thunderbird-mcp ↗

  Best for: Giving an AI assistant mail, calendar, and contact access inside Thunderbird: it provides search, read, compose, filter, calendar, and contact operations over a local bridge.

  Thunderbird MCP connects an MCP client to a Thunderbird extension through a local HTTP bridge, with README-documented operations for searching and reading mail, composing and drafting messages, managing filters, listing calendars, and managing contacts. It requires Thunderbird 128 or newer and a local bridge process connected to the Thunderbird extension.

  Score 62.6: show every number behind it

  • Adoption66 / 100 · weight 40%
    • GitHub stars66
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance100 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade100
    • Commit cadence100
  • Momentum89 / 100 · weight 14%
    • Stars gained, relative to size100
    • Stars gained, absolute73
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality≈65 / 100 · weight 13%
    • Tool description quality≈65
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  80.3

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  62.6

• 8

  Librus MCP Server

  Emerging

  krzysztofbury/librus-mcp ↗

  Best for: Running AI agents on another machine against Librus Synergia school data: it exposes 31 tools and supports self-hosted HTTP access for agents on other machines.

  Librus MCP Server exposes 31 tools for Librus Synergia school data, including grades, attendance, timetables, homework, calendar events, announcements, messages, notifications, and student information, and supports multiple account aliases plus self-hosted HTTP access. It requires a Librus Synergia login and password, and accounts that need interactive two-factor authentication are not supported.

  Score 61.4: show every number behind it

  • Adoption56 / 100 · weight 40%
    • GitHub stars29
    • PyPI downloads51
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance100 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade100
    • Commit cadence100
  • Momentum100 / 100 · weight 14%
    • Stars gained, relative to sizenot measured
      no snapshot history yet
    • Stars gained, absolutenot measured
      no snapshot history yet
    • PyPI download trend100
  • Tool quality73 / 100 · weight 13%
    • Tool description quality65
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  78.7

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  61.4

• 9

  caldav-mcp

  Steady

  dominik1001/caldav-mcp ↗

  Best for: Connecting an AI assistant to CalDAV: it documents tools to list calendars and events, create, update, and delete events, and list or create VTODO tasks.

  The caldav-mcp server documents tools for listing calendars and events, creating, updating, and deleting events, and listing or creating VTODO tasks. It assumes a CalDAV endpoint plus username and password supplied through CALDAV_BASE_URL, CALDAV_USERNAME, and CALDAV_PASSWORD when run via npx.

  Score 61.3: show every number behind it

  • Adoption55 / 100 · weight 40%
    • GitHub stars51
    • npm downloads29
      downloads show none of the weekday rhythm human traffic has; halved
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance100 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade100
    • Commit cadence100
  • Momentum62 / 100 · weight 14%
    • Stars gained, relative to size60
    • Stars gained, absolute33
    • npm download trend100
  • Tool quality≈65 / 100 · weight 13%
    • Tool description quality≈65
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  72.1

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: modest but real audience

  0.85

  Composite score

  61.3

• 10

  Apple Events MCP Server

  Community favourite

  FradSer/mcp-server-apple-events ↗

  Best for: Managing Apple Reminders and Calendar events on macOS: it provides native EventKit CRUD for reminders, lists, subtasks, and calendar events.

  It documents native EventKit integration for Apple Reminders and Calendar on macOS, with CRUD operations for reminders, subtasks, reminder lists, and calendar events. Before choosing it, note that it requires macOS and Node.js 20 or later, and the calling host must support EventKit permission requests and declare the required usage descriptions.

  Score 60.6: show every number behind it

  • Adoption63 / 100 · weight 40%
    • GitHub stars59
    • npm downloads28
      downloads show none of the weekday rhythm human traffic has; halved
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance100 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade100
    • Commit cadence100
  • Momentum78 / 100 · weight 14%
    • Stars gained, relative to size84
    • Stars gained, absolute49
    • npm download trend100
  • Tool quality≈65 / 100 · weight 13%
    • Tool description quality≈65
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  77.7

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  60.6

• 11

  Google Workspace MCP Server

  Community favourite

  aaronsb/google-workspace-mcp ↗

  Best for: Managing multiple Google Workspace accounts in one agent session: it exposes service tools for Gmail, Calendar, Drive, Docs, Sheets, Tasks, Meet and Contacts plus manage_accounts.

  The server exposes 13 tools, including manage_accounts for account lifecycle and manage_calendar, manage_email, manage_drive, manage_docs, manage_sheets, manage_tasks, manage_meet and manage_contacts for service work. Its setup requires Google OAuth client credentials and Node 22.12 or newer.

  Score 57.0: show every number behind it

  • Adoption62 / 100 · weight 40%
    • GitHub stars57
    • npm downloads33
      downloads show none of the weekday rhythm human traffic has; halved
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance100 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade100
    • Commit cadence100
  • Momentum46 / 100 · weight 14%
    • Stars gained, relative to size34
    • Stars gained, absolute21
    • npm download trend96
  • Tool quality68 / 100 · weight 13%
    • Tool description quality60
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  73.1

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  57.0

• 12

  mu

  Community favourite

  micro/mu ↗

  Best for: Managing a calendar alongside email in a self-hosted assistant: it documents Google Calendar and mail integrations exposed through one MCP interface.

  Mu is a self-hostable Go runtime and MCP server that offers a web app, API, CLI, and messaging clients, and exposes services such as mail, files, calendar, search, weather, and notes through one MCP interface. Before choosing it, note that setup requires choosing an AI provider, and included tools may require API keys.

  Score 54.9: show every number behind it

  • Adoption66 / 100 · weight 40%
    • GitHub stars66
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance95 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade80
    • Commit cadence100
  • Momentum27 / 100 · weight 14%
    • Stars gained, relative to size29
    • Stars gained, absolute24
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality≈65 / 100 · weight 13%
    • Tool description quality≈65
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integrates100

  Weighted mean of the five

  70.4

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  54.9

• 13

  calendar-mcp

  Steady

  deciduus/calendar-mcp ↗

  Best for: People managing several Google Calendar accounts through an LLM: it exposes 23 tools for events, free/busy, focus booking, conflicts, and mutual scheduling.

  calendar-mcp is a Python MCP server that connects an LLM client to Google Calendar over stdio or streamable HTTP and exposes 23 tools for listing and searching calendars and events, creating, updating, moving, RSVPing to and deleting events, free/busy queries, busyness analysis, recurring-event projection, focus-time booking, conflict detection, and mutual scheduling. It requires Google OAuth 2.0 Desktop app credentials and a one-time sign-in before the server runs non-interactively.

  Score 54.5: show every number behind it

  • Adoption43 / 100 · weight 40%
    • GitHub stars36
    • PyPI downloads37
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance97 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade100
    • Commit cadence85
  • Momentum25 / 100 · weight 14%
    • Stars gained, relative to size37
    • Stars gained, absolute16
    • PyPI download trend17
  • Tool quality85 / 100 · weight 13%
    • Tool description quality77
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  64.1

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: modest but real audience

  0.85

  Composite score

  54.5

• 14

  Outlook Assistant

  Community favourite

  littlebearapps/outlook-assistant ↗

  Best for: Scheduling and managing Outlook calendar events from an AI assistant: it exposes list-events, create-event, and manage-event, with dry-run previews on manage-event.

  Outlook Assistant exposes 22 MCP tools for Outlook email, calendar, contacts, folders, rules, categories, and settings through the Microsoft Graph API. It requires Microsoft Graph authentication, and shared-mailbox sending, drafts, replies, and forwards are not supported.

  Score 54.2: show every number behind it

  • Adoption62 / 100 · weight 40%
    • GitHub stars40
    • npm downloads56
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance95 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade80
    • Commit cadence100
  • Momentum11 / 100 · weight 14%
    • Stars gained, relative to size0
    • Stars gained, absolute0
    • npm download trend44
  • Tool quality88 / 100 · weight 13%
    • Tool description quality80
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  69.5

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  54.2

• 15

  Google Calendar MCP Server

  Steady

  takumi0706/google-calendar-mcp ↗

  Best for: Scheduling recurring Google Calendar events with attendees from Claude Desktop: createEvent supports RFC5545 recurrence rules, attendees, all-day events, and reminders.

  The server connects Claude Desktop to Google Calendar over STDIO and exposes five tools: getEvents, createEvent, updateEvent, deleteEvent, and authenticate. Its Node.js 20 or newer requirement is worth noting: authentication opens a browser consent window and stores tokens in memory.

  Score 52.8: show every number behind it

  • Adoption48 / 100 · weight 40%
    • GitHub stars44
    • npm downloads21
      downloads show none of the weekday rhythm human traffic has; halved
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance90 / 100 · weight 24%
    • Last commit touching this server88
    • Repository maintenance grade100
    • Commit cadence85
  • Momentum18 / 100 · weight 14%
    • Stars gained, relative to size0
    • Stars gained, absolute0
    • npm download trend73
  • Tool quality76 / 100 · weight 13%
    • Tool description quality68
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  62.1

  × relevance: the keyword is dedicated here

  1.00

  × continuity: actively changing

  1.00

  × evidence: modest but real audience

  0.85

  Composite score

  52.8

• 16

  intervals-icu-mcp

  Emerging

  hhopke/intervals-icu-mcp ↗

  Best for: Intervals.icu athletes and coaches who need calendar and training-data access: it exposes 69 tools for activities, wellness, calendar events, planned workouts, gear, and sport zones.

  It is an MCP server for Intervals.icu that exposes 69 tools covering activities, streams, wellness, calendar events, gear, and sport zones, plus structured workout generation and a built-in syntax reference. Before choosing it, note that setup requires an Intervals.icu API key and athlete ID, with the recommended path running the PyPI package through uvx.

  Score 50.1: show every number behind it

  • Adoption57 / 100 · weight 40%
    • GitHub stars52
    • PyPI downloads32
      PyPI downloads show no weekday rhythm; halved
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance100 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade100
    • Commit cadence100
  • Momentum67 / 100 · weight 14%
    • Stars gained, relative to size100
    • Stars gained, absolute62
    • PyPI download trend16
  • Tool quality81 / 100 · weight 13%
    • Tool description quality73
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  75.6

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: modest but real audience

  0.85

  Composite score

  50.1

• 17

  M365 Assistant MCP Server

  Abandoned but popular

  ryaker/outlook-mcp ↗

  Best for: Managing Outlook calendars alongside other Microsoft 365 work: it lists, creates, accepts, declines, and deletes events, with email, OneDrive, and Power Automate tools included.

  Its README documents those calendar operations through Microsoft Graph, alongside Outlook email tools, OneDrive file and sharing tools, and Power Automate tools for environments, flows, and run history. Setup requires an Azure app registration, Azure credentials in a .env file, Claude Desktop configuration, and OAuth authentication using its auth server.

  Score 47.8: show every number behind it

  • Adoption66 / 100 · weight 40%
    • GitHub stars66
    • npm downloadsnot measured
      npm publishes m365-mcp from debian777/m365-mcp
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance46 / 100 · weight 24%
    • Last commit touching this server68
    • Repository maintenance grade30
    • Commit cadence5
  • Momentum45 / 100 · weight 14%
    • Stars gained, relative to size49
    • Stars gained, absolute40
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality≈65 / 100 · weight 13%
    • Tool description quality≈65
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  61.3

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  47.8

• 18

  Google Workspace MCP Server

  Abandoned but popular

  gemini-cli-extensions/workspace ↗

  Best for: For checking Google Calendar from a terminal inside Gemini CLI: it documents a /calendar:get-schedule [date] command for showing a day's schedule.

  The README documents a Gemini CLI extension with commands such as /calendar:get-schedule [date] and /drive:search , plus natural-language examples for creating a Doc, listing calendar events, and searching Drive. It requires a logged-in Google account and installation through the Gemini CLI extension command, and its README warns that the extension can read, modify, and delete Google Account data.

  Score 47.8: show every number behind it

  • Adoption70 / 100 · weight 40%
    • GitHub stars70
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance46 / 100 · weight 24%
    • Last commit touching this server68
      dated from the last commit on the default branch, re-read from GitHub at publication; github.com shows a push 3 days ago, which counts every ref; the stored date would have published 3 days ago
    • Repository maintenance grade30
    • Commit cadence5
  • Momentum33 / 100 · weight 14%
    • Stars gained, relative to size34
    • Stars gained, absolute32
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality≈65 / 100 · weight 13%
    • Tool description quality≈65
      tool descriptions not yet scored
    • Built and inspected by Glamanot measured
      never built and inspected by Glama
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  61.3

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  47.8

• 19

  altic-mcp

  Abandoned but popular

  altic-dev/altic-mcp ↗

  Best for: macOS Calendar automation in a broader assistant: it exposes create, list, search, update, delete, availability-check, and recurring-event Calendar tools among 91 tools.

  altic-mcp exposes 91 tools for macOS automation, with Calendar tools to create, list, search, update, delete, check availability, and create recurring events alongside Messages, Contacts, Notes, Reminders, files, clipboard, windows, Safari, Chrome, screenshots, and system settings. It requires macOS, and installation is documented via uvx from the GitHub repository; no npm or PyPI package is published.

  Score 47.6: show every number behind it

  • Adoption56 / 100 · weight 40%
    • GitHub stars56
    • npm downloadsnot measured
      no npm package
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance63 / 100 · weight 24%
    • Last commit touching this server88
    • Repository maintenance grade55
    • Commit cadence5
  • Momentum40 / 100 · weight 14%
    • Stars gained, relative to size47
    • Stars gained, absolute29
    • npm download trendnot measured
      no download history for the selected registry
  • Tool quality68 / 100 · weight 13%
    • Tool description quality60
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  61.0

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: widely adopted

  1.00

  Composite score

  47.6

• 20

  gigamail

  Steady

  adecubed/gigamail ↗

  Best for: AI agents needing Microsoft 365 or IMAP mail and calendar free-slot lookup, where sends, deletes, and calendar writes require out-of-band human approval.

  GigaMail is a stdio MCP server exposing 31 tools for reading and searching Microsoft 365 or IMAP mail, extracting attachment text, using sender and knowledge context, listing calendar events, finding free slots, and saving drafts, with sends, deletes, calendar writes, Zoom meeting creation, and Drive uploads or deletions routed through two-phase human approval. The agent cannot approve its own sends, deletes, calendar writes, Zoom meetings, or Drive uploads and deletions; a human must approve them from the console or CLI.

  Score 47.5: show every number behind it

  • Adoption52 / 100 · weight 40%
    • GitHub stars31
    • PyPI downloads47
    • Used through Glamanot measured
      not used through Glama in the last 30 days
  • Maintenance100 / 100 · weight 24%
    • Last commit touching this server100
    • Repository maintenance grade100
    • Commit cadence100
  • Momentum51 / 100 · weight 14%
    • Stars gained, relative to size64
    • Stars gained, absolute29
    • PyPI download trend55
  • Tool quality83 / 100 · weight 13%
    • Tool description quality75
    • Built and inspected by Glama100
  • Trust100 / 100 · weight 9%
    • License100
    • Published by the vendor it integratesnot measured
      not published by the vendor it integrates

  Weighted mean of the five

  71.6

  × relevance: the keyword is declared here

  0.78

  × continuity: actively changing

  1.00

  × evidence: modest but real audience

  0.85

  Composite score

  47.5

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