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Microsoft Outlook Calendar logo. Microsoft Outlook Calendar MCP server connector.

Microsoft Outlook Calendar MCP Server

Manage calendar events, schedules, and meetings through Microsoft Outlook using the Microsoft Graph API. Create, update, and query events, check availability, and manage multiple calendars.

ToolsTools
13
CategoryCategory
Scheduling & Calendar
Install with Willow
Claude
Install
✓Enterprise-grade security
✓SSO & authentication ready
✓Full governance & audit logs

What is the Microsoft Outlook Calendar MCP Server?

The Microsoft Outlook Calendar MCP server gives AI agents structured, permission-aware access to Microsoft Outlook Calendar through the Model Context Protocol. With 13 pre-built actions, agents can read, create, and update Microsoft Outlook Calendar data on behalf of authorized users.

Willow ships the Microsoft Outlook Calendar MCP server as part of an enterprise control plane. Every call runs behind SSO (Okta, Azure AD), enforces RBAC and least-privilege at runtime, writes to a full audit trail, and integrates with Splunk and Loki for SIEM visibility. Connect from Claude Desktop, Claude Code, Cursor, ChatGPT, VS Code, n8n, or any custom agent. Install once, distribute org-wide, and see exactly how Microsoft Outlook Calendar is being used by every AI agent in your stack.

Tools

Tool

List Events

List calendar events for the authenticated user. Returns events sorted by start time. Supports filtering by date range and other criteria. Use this to view upcoming events, past events, or events in a specific time period.
Tool

Get Event

Get full details of a specific calendar event by its ID, including subject, body, attendees, location, recurrence pattern, and all other properties.
Tool

List Calendar View

Get all events in a specific time range (calendar view). Unlike List Events, this expands recurring events into individual occurrences within the time window. This is the recommended way to get events for a specific date range.
Tool

Find Meeting Times

Suggest meeting times based on attendees' availability, location constraints, and time constraints. The Graph API analyzes calendars and returns time slots when all required attendees are free.
Tool

Get Schedule

Get the free/busy availability information for one or more users over a specified time range. Returns availability blocks showing when users are free, busy, tentative, or out of office. Useful for checking availability before scheduling.
Tool

Create Event

Create a new calendar event. Supports setting subject, body, start/end times, location, attendees, reminders, online meeting, and recurrence. Attendees receive meeting invitations automatically.
Tool

Update Event

Update an existing calendar event. Only the properties you specify will be updated; other properties remain unchanged. Attendees are notified of changes automatically.
Tool

Delete Event

Delete a calendar event. If the event has attendees, cancellation notifications are sent automatically. This operation cannot be undone.
Tool

RSVP to Event

Respond to a meeting invitation by accepting, tentatively accepting, or declining. The organizer is notified of your response. You can optionally include a message with your response.
Tool

List Calendars

List all calendars for the authenticated user, including the default calendar, shared calendars, and group calendars. Returns calendar name, color, owner, and permissions.
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Set Up Your Microsoft Outlook Calendar MCP Server in Minutes

Add the following configuration to your MCP client. Authentication is handled via OAuth. Compatible with Claude Desktop, Claude Code, Cursor, ChatGPT, VS Code, n8n, and any MCP-compatible agent.

Claude Desktop

claude_desktop_config.json
{
  "mcpServers": {
    "willow-outlook-calendar": {
      "type": "http",
      "url": "https://<org>.mcp-s.com/mcp/mcp/outlook-calendar"
    }
  }
}

Cursor

.cursor/mcp.json
{
  "mcpServers": {
    "willow-outlook-calendar": {
      "type": "http",
      "url": "https://<org>.mcp-s.com/mcp/mcp/outlook-calendar"
    }
  }
}

Claude Code

CLI
claude mcp add willow-outlook-calendar --transport http https://<org>.mcp-s.com/mcp/mcp/outlook-calendar

n8n

HTTP Request Node
{
  "url": "https://<org>.mcp-s.com/mcp/mcp/outlook-calendar",
  "method": "POST"
}

Or click "Install with Willow" above to set up automatically with SSO and RBAC preconfigured.

Enterprise Governance for Microsoft Outlook Calendar

Willow adds the layer Microsoft Outlook Calendar and every other SaaS doesn't ship out of the box: every call runs behind SSO (Okta, Azure AD), enforces RBAC and least-privilege at runtime, writes to full audit logs, and detects shadow AI usage across your stack. One MCP gateway. Any agent. Every tool.

Microsoft Outlook Calendar MCP Server FAQ

What is the Microsoft Outlook Calendar MCP server?

The Microsoft Outlook Calendar MCP server is a Model Context Protocol implementation that lets AI agents like Claude, Cursor, and ChatGPT read and write Microsoft Outlook Calendar data through a standardized interface. Willow hosts and governs this server so enterprises can roll it out without a security review backlog.

How is Willow's Microsoft Outlook Calendar MCP server different from the official one?

The official Microsoft Outlook Calendar MCP server is scoped to a single user's account and does not include enterprise governance. Willow's version adds SSO, RBAC, audit logging, shadow AI detection, and centralized control over which actions agents can take across the entire org.

Which AI clients work with the Microsoft Outlook Calendar MCP server?

Claude Desktop, Claude Code, Cursor, ChatGPT, VS Code with MCP support, n8n, and any custom agent built with OpenAI Agents SDK, LangChain, Vercel AI SDK, or Anthropic SDK.

Is the Microsoft Outlook Calendar MCP server secure? How does Willow handle authentication?

Every call runs behind your existing SSO (Okta, Azure AD). Per-user OAuth scopes the agent to exactly what that user can do in Microsoft Outlook Calendar, nothing more. No credentials reach the LLM. Every action writes to an audit trail.

Can I limit which Microsoft Outlook Calendar actions agents can take?

Yes. Willow lets you scope agents to specific actions, specific projects, or specific environments. Toggle actions on or off in the dashboard, or enforce policy via infrastructure-as-code through GitHub.

How do I detect shadow Microsoft Outlook Calendar MCP servers in my org?

Willow's browser extension and discovery service surface unmanaged MCP servers, skills, and AI agents across the org. If a developer installed an unapproved Microsoft Outlook Calendar MCP locally, you'll see it.

What does the Microsoft Outlook Calendar MCP server cost?

Pricing depends on org size and deployment model (SaaS, dedicated cloud, self-host). See withwillow.ai/pricing or contact sales for a quote.

How do I install the Microsoft Outlook Calendar MCP server with Willow?

Install via the Willow Connect Panel in one click, or paste the JSON snippet above into your Claude Desktop, Cursor, or Claude Code config. SSO and RBAC inherit from your existing Willow setup.

Compare Willow MCP Gateway

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