Office Outlook MCP Server

by chrischallio.github.chrischall/office-outlook-mcpv0.4.0

Outlook / Microsoft 365 for Claude — mail, calendar, contacts and tasks, with confirm-gated sending

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Active1d ago

Install Office Outlook MCP server

claude mcp add office-outlook -e OUTLOOK_ACCESS_TOKEN='<outlook-access-token>' -- npx -y @chrischall/office-outlook-mcp

{
  "mcpServers": {
    "office-outlook": {
      "command": "npx",
      "args": [
        "-y",
        "@chrischall/office-outlook-mcp"
      ],
      "env": {
        "OUTLOOK_ACCESS_TOKEN": "<outlook-access-token>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "office-outlook": {
      "command": "npx",
      "args": [
        "-y",
        "@chrischall/office-outlook-mcp"
      ],
      "env": {
        "OUTLOOK_ACCESS_TOKEN": "<outlook-access-token>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "office-outlook": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@chrischall/office-outlook-mcp"
      ],
      "env": {
        "OUTLOOK_ACCESS_TOKEN": "<outlook-access-token>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "office-outlook": {
      "command": "npx",
      "args": [
        "-y",
        "@chrischall/office-outlook-mcp"
      ],
      "env": {
        "OUTLOOK_ACCESS_TOKEN": "<outlook-access-token>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
OUTLOOK_ACCESS_TOKEN	—	yes	Pre-obtained Outlook bearer token. Overrides the browser bridge. Power users / CI only; tokens last about 25 hours.
OUTLOOK_DISABLE_FETCHPROXY	—	—	Set to '1' to disable browser capture, requiring OUTLOOK_ACCESS_TOKEN.
OUTLOOK_API_BASE	—	—	Override the Outlook REST base URL. Defaults to https://outlook.office.com/api/v2.0.
OUTLOOK_WS_PORT	—	—	fetchproxy concentrator port used for token capture. Defaults to 37149, the fleet-wide shared port.
OUTLOOK_CAPTURE_TIMEOUT	—	—	Seconds to wait for the Outlook tab to make a request we can read a token from. Defaults to 30.
OUTLOOK_TOKEN_CACHE	—	—	Set to 'false' to stop caching the captured token between runs. Defaults to true.
OUTLOOK_TOKEN_FILE	—	—	Path to the cached token file. Defaults to ~/.office-outlook-mcp/token.json.

Freshness

Active — last maintenance signal 1d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-10-09 · 1d ago · GitHub
Latest release
2026-10-08 · 1d ago · GitHub · v0.4.0
Package published
no data · npm/PyPI
Registry entry updated
2026-10-08 · 1d ago · official registry · v0.4.0

FAQ

›How do I install the Office Outlook MCP server in Claude Code?

Run: claude mcp add office-outlook -e OUTLOOK_ACCESS_TOKEN='<outlook-access-token>' -- npx -y @chrischall/office-outlook-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Office Outlook require an API key?

Yes. It expects OUTLOOK_ACCESS_TOKEN, of which 1 is a secret.

›Can I use Office Outlook as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Office Outlook in the official MCP registry?

Yes, as io.github.chrischall/office-outlook-mcp.