Microsoft 365 Calendar MCP Server

Microsoft 365 Outlook Calendar MCP server - list, get, create, update, delete, cancel, and respond to events, check free/busy, find meeting times, and list calendars via the Microsoft Graph API. Its 10 documented tools cluster into read & search, delete, create & write, update.

People who work with event and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

One of 41 MCP servers published from mindstone/mcp-servers. Stars and repository activity are shared across all of them. See all 41 →

VERIFIED ACTIVE

LAST COMMIT 2026-09-13 · VERIFIED 2026-09-18

NOASSERTION · TypeScript servers · how we verify → /methodology

01 · Install Microsoft 365 Calendar

before you install - you'll need

Set MS_CLIENT_ID, MS_CONFIG_DIR, MS_MCP_PACKAGE_ID, MICROSOFT_REQUEST_TIMEOUT_MS before connecting.

Claude Code

claude mcp add mindstone-mcp-servers-connectors-microso -- npx -y @mindstone/mcp-server-microsoft-calendar

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "mindstone-mcp-servers-connectors-microso": {
      "command": "npx",
      "args": [
        "-y",
        "@mindstone/mcp-server-microsoft-calendar"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license no standard license detected - usage rights unclear; check the repo before commercial use

npm package @mindstone/mcp-server-microsoft-calendar - published under the repo owner's npm scope (@mindstone)

registry namespace io.github.mindstone is GitHub-verified and matches the repo owner

03 · What Microsoft 365 Calendar can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can get detailed information about a specific calendar event (optionally including attachment metadata, create a new calendar event (with optional Teams meeting and recurrence), update an existing calendar event (including adding/removing attendees and recurrence), and delete a calendar event.

Capability map

Tools grouped from the project's README - what Microsoft 365 Calendar lets an agent do.

read & search

5 tools - e.g. List calendar events within a date range (JSON with per-attendee RSVP status, or agenda-style text). Reports truncated: true when Graph has more pages - narrow ; Get detailed information about a specific…

list_events · get_event · get_free_busy · find_meeting_times · list_calendars

delete

2 tools - e.g. Delete a calendar event.; Cancel a meeting as organizer with an optional message to attendees.

delete_event · cancel_event

create & write

1 tool - e.g. Create a new calendar event (with optional Teams meeting and recurrence).

create_event

update

1 tool - e.g. Update an existing calendar event (including adding/removing attendees and recurrence).

update_event

Respond

1 tool - e.g. Accept, decline, or tentatively accept an event invitation.

respond_to_event

04 · Who maintains Microsoft 365 Calendar

Microsoft 365 Calendar is maintained by mindstone. We track 41 MCP servers from mindstone - 41 actively maintained, 12 combined GitHub stars, oldest repo from Apr 2026. Full record: all servers from mindstone.

05 · Facts

repository: github.com/mindstone/mcp-servers
category: productivity - actively maintained as of 2026-09-18.
registry: io.github.mindstone/mcp-server-microsoft-calendar (active, first published 2026-05-21 · 3 versions)
packages: npm:@mindstone/mcp-server-microsoft-calendar

06 · Microsoft 365 Calendar FAQ

Is Microsoft 365 Calendar still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-13. We re-verify nightly.

What can Microsoft 365 Calendar do?

How do I install Microsoft 365 Calendar?

Run `npx -y @mindstone/mcp-server-microsoft-calendar`. The README documents 4 environment variables (MS_CLIENT_ID, MS_CONFIG_DIR, MS_MCP_PACKAGE_ID…) to set first. Set MS_CLIENT_ID, MS_CONFIG_DIR, MS_MCP_PACKAGE_ID, MICROSOFT_REQUEST_TIMEOUT_MS before connecting. You can also paste the ready-made client config above.

Does Microsoft 365 Calendar run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Microsoft 365 Calendar

Alternatives to Microsoft 365 Calendar

Maintained productivity servers if Microsoft 365 Calendar isn't the fit.

Pairs well with

Servers that cover what Microsoft 365 Calendar doesn't - only shown when the pairing reason fits the companion.

More productivity MCP servers · Microsoft 365 Files · Microsoft 365 Mail · Microsoft 365 SharePoint · Microsoft 365 Teams · Mixmax