io.github.chrischall/office-outlook-mcp MCP Server

io.github.chrischall/office-outlook-mcp

Repository Registry

What is the io.github.chrischall/office-outlook-mcp MCP server?

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

How to install io.github.chrischall/office-outlook-mcp

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

OUTLOOK_ACCESS_TOKEN
secret
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.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "office-outlook-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@chrischall/office-outlook-mcp"
      ],
      "env": {
        "OUTLOOK_ACCESS_TOKEN": "<YOUR_OUTLOOK_ACCESS_TOKEN>",
        "OUTLOOK_DISABLE_FETCHPROXY": "<YOUR_OUTLOOK_DISABLE_FETCHPROXY>",
        "OUTLOOK_API_BASE": "<YOUR_OUTLOOK_API_BASE>",
        "OUTLOOK_WS_PORT": "<YOUR_OUTLOOK_WS_PORT>",
        "OUTLOOK_CAPTURE_TIMEOUT": "<YOUR_OUTLOOK_CAPTURE_TIMEOUT>",
        "OUTLOOK_TOKEN_CACHE": "<YOUR_OUTLOOK_TOKEN_CACHE>",
        "OUTLOOK_TOKEN_FILE": "<YOUR_OUTLOOK_TOKEN_FILE>"
      }
    }
  }
}

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