MCP server for Microsoft Teams, Outlook Calendar, Mail, and OneDrive via Microsoft Graph
Connect Graph MCP to Claude, Cursor or any other MCP client and it stops being a tab you switch to. MCP server for Microsoft Teams, Outlook Calendar, Mail, and OneDrive via Microsoft Graph. The graph mcp mcp server is what makes that connection.
Graph MCP is a Node.js MCP server that connects Claude Code and Codex to Microsoft Teams, Outlook mail and calendar, online meetings, OneDrive, users, and presence through Microsoft Graph. It runs locally over stdio and requires Node.js 22 or newer.
The toolset is worth reading before you wire it up, because it tells you what the integration is really for:
offline_access — openidprofile — User.ReadUser.ReadBasic.All — Chat.ReadChat.ReadWrite — ChatMessage.SendChannelMessage.Read.All — ChannelMessage.SendTeam.ReadBasic.All — Channel.ReadBasic.AllChannelMember.Read.All — Calendars.ReadWriteMail.Read — Mail.SendPresence.Read — Presence.Read.AllPresence.ReadWrite — OnlineMeetings.ReadOnlineMeetingTranscript.Read.All — OnlineMeetingRecording.Read.AllCodex — resolve the installed plugin root from skills/setup/SKILL.md, change to thatConfiguration is passed through the environment: AZURE_CLIENT_ID, AZURE_TENANT_ID, GRAPH_TOKEN_ENCRYPTION_KEY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
http://localhost:3000/auth/callback. - No client secret. Graph MCP uses delegated user authentication. Add these exact delegated permissions to the app registration: - offline_access - openid - profile - User.Read -Because this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.
This sits in the team communication group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Graph MCP's toolset — offline_access, profile, User.ReadBasic.All and 11 more — is a fair guide to whether it matches your workflow. It is maintained by juststas; worth a glance at recent repository activity before you build anything load-bearing on it.
This entry was verified against Graph MCP's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.
| Tool | What it does |
|---|---|
| offline_access | openid |
| profile | User.Read |
| User.ReadBasic.All | Chat.Read |
| Chat.ReadWrite | ChatMessage.Send |
| ChannelMessage.Read.All | ChannelMessage.Send |
| Team.ReadBasic.All | Channel.ReadBasic.All |
| ChannelMember.Read.All | Calendars.ReadWrite |
| Mail.Read | Mail.Send |
| Presence.Read | Presence.Read.All |
| Presence.ReadWrite | OnlineMeetings.Read |
| OnlineMeetingTranscript.Read.All | OnlineMeetingRecording.Read.All |
| Codex | resolve the installed plugin root from skills/setup/SKILL.md, change to that |
| tokens-v2.enc | encrypted token data |
| Access | token refresh is serialized so concurrent Graph calls share one refresh. |
{
"mcpServers": {
"graph": {
"command": "npx",
"args": ["-y", "vitest"],
"env": {
"AZURE_CLIENT_ID": "your-value",
"AZURE_TENANT_ID": "your-value",
"GRAPH_TOKEN_ENCRYPTION_KEY": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
http://localhost:3000/auth/callback. - No client secret. Graph MCP uses delegated user authentication. Add these exact delegated permissions to the app registration: - offline_access - openid - profile - User.Read -| Variable | Description | Required |
|---|---|---|
| AZURE_CLIENT_ID | Configuration value read at startup. | Optional |
| AZURE_TENANT_ID | Configuration value read at startup. | Optional |
| GRAPH_TOKEN_ENCRYPTION_KEY | Credential the server authenticates with. | Yes |
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