ms-365-mcp-server

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Microsoft 365 MCP Server

A Model Context Protocol (MCP) server for interacting with Microsoft 365 and Microsoft Office services through the Graph API.

This server supports multiple Microsoft cloud environments:

| Cloud | Description | Auth Endpoint | Graph API Endpoint | | -------------------- | ---------------------------------- | ------------------------- | ------------------------------- | | Global (default) | International Microsoft 365 | login.microsoftonline.com | graph.microsoft.com | | China (21Vianet) | Microsoft 365 operated by 21Vianet | login.chinacloudapi.cn | microsoftgraph.chinacloudapi.cn |

• Node.js >= 20 (recommended)
• Node.js 14+ may work with dependency warnings

• Authentication via Microsoft Authentication Library (MSAL)
• Comprehensive Microsoft 365 service integration
• Read-only mode support for safe operations
• Tool filtering for granular access control

The server supports two output formats that can be configured globally:

Standard JSON output with pretty-printing:

{
  "value": [
    {
      "id": "1",
      "displayName": "Alice Johnson",
      "mail": "alice@example.com",
      "jobTitle": "Software Engineer"
    }
  ]
}

Token-Oriented Object Notation for efficient LLM token usage:

v