mcp-microsoft-todo

🇫🇷 Version française : README.fr.md

MCP server to drive Microsoft To Do from Claude Code, Claude Desktop, or any MCP-compatible client.

Works with any Microsoft account: personal (outlook.com, hotmail.com, live.com), Office 365 personal or business, Microsoft 365. Zero Azure setup required on the user side — just sign in via device code flow.

🏗 Built and maintained by MAG&Cie

This MCP server is open-source and free to use. It's also a showcase of our Création de MCP offering at MAG&Cie — we build custom MCP connectors for businesses that want to plug AI into their internal tools (CRM, ERP, custom APIs, internal databases).

If you'd like the same kind of connector for your tools — drop us a line at www.mag-cie.com/creation-mcp.

🚀 End-user installation

Prerequisites (all clients)

• Node.js 20+ (nodejs.org)
• A Microsoft account (free or paid)

No Azure account required, no App Registration to create, nothing to compile.

🟦 Claude Code (CLI)

Install (one command):

claude mcp add --transport stdio microsoft-todo -- npx -y @mag-cie/mcp-microsoft-todo

If you have a personal Microsoft account (outlook.com, hotmail.com, live.com, msn.com, Office 365 personal), add MS_TENANT=consumers:

claude mcp add --transport stdio microsoft-todo --env MS_TENANT=consumers -- npx -y @mag-cie/mcp-microsoft-todo

Verify it's wired up:

claude mcp list

First use — recommended: pre-auth in a terminal first to avoid the "stuck on first MCP call" issue (where the device code is printed to MCP stderr but Claude Code doesn't surface it):

# macOS / Linux
MS_TENANT=consumers npx -y @mag-cie/mcp-microsoft-todo@latest --auth

# Windows PowerShell
$env:MS_TENANT="consumers"; npx -y @mag-cie/mcp-microsoft-todo@latest --auth

You'll see:

To sign in, use a web browser to open the page https://www.microsoft.com/link and enter the code XXXXXXXXX

Visit the URL, enter the code, sign in. The token is cached in ~/.mcp-microsoft-todo/token-cache.json and refreshed automatically — you'll never have to do this again. Now go to Claude Code and any prompt that calls a tool will work instantly.

Skip the pre-auth step if you're feeling lucky — the MCP will trigger the device code flow on first call too. The code goes to the Claude Code MCP log file (look in %USERPROFILE%\.claude\logs\ on Windows or ~/.claude/logs/ elsewhere).

Update to the latest version:

claude mcp remove microsoft-todo
claude mcp add --transport stdio microsoft-todo -- npx -y @mag-cie/mcp-microsoft-todo@latest

The -y flag of npx auto-accepts the download. Without @latest, npx may serve a stale cached version.

Uninstall:

claude mcp remove microsoft-todo
# Purge the token cache:
rm -rf ~/.mcp-microsoft-todo

🟪 Claude Desktop (app)

1. Locate the config file:

On Windows, you can open it directly with:

notepad $env:APPDATA\Claude\claude_desktop_config.json

If the file doesn't exist, create it with an empty JSON object {} then edit.

2. Add the config:

{
  "mcpServers": {
    "microsoft-todo": {
      "command": "npx",
      "args": ["-y", "@mag-cie/mcp-microsoft-todo"]
    }
  }
}

For a personal Microsoft account, add env:

{
  "mcpServers": {
    "microsoft-todo": {
      "command": "npx",
      "args": ["-y", "@mag-cie/mcp-microsoft-todo"],
      "env": { "MS_TENANT": "consumers" }
    }
  }
}

To localize the compact-format strings (optional, see Localization):

{
  "env": { "MS_TENANT": "consumers", "MCP_LOCALE": "fr" }
}

3. Restart Claude Desktop COMPLETELY (not just close the window):

• Windows: right-click systray icon → Quit, then relaunch
• macOS: ⌘+Q then relaunch

4. Verify it's wired up:

In Claude Desktop, look at the 🔌 plug or 🔧 tools icon at the bottom right of the input area — you should see microsoft-todo listed.

5. First auth — recommended pre-auth in a terminal:

# macOS / Linux
MS_TENANT=consumers npx -y @mag-cie/mcp-microsoft-todo@latest --auth

# Windows PowerShell
$env:MS_TENANT="consumers"; npx -y @mag-cie/mcp-microsoft-todo@latest --auth

You'll see the device code immediately in the terminal. Visit the URL, enter the code, sign in. Token cached. Now Claude Desktop will reuse this cache — no need to fish in the logs.

Without --auth, the device code goes to the Claude Desktop MCP log file:

• Windows: %APPDATA%\Claude\logs\mcp-server-microsoft-todo.log
• macOS: ~/Library/Logs/Claude/mcp-server-microsoft-todo.log

Update: edit the version in args (@mag-cie/mcp-microsoft-todo@latest), restart Claude Desktop. Or let npx do its thing (npx cache ~24h).

🟧 Cursor / Continue / other stdio MCP clients

Any MCP client that supports the stdio transport works the same way. Generic format:

command: npx
args: -y @mag-cie/mcp-microsoft-todo
env: MS_TENANT=consumers (if personal account)

Adapt to the client's config format (often JSON or TOML similar to Claude Desktop).

💡 Example prompts

Once installed, just ask Claude in natural language. Sample prompts that exercise the main tools:

🆘 Auth troubleshooting

🛠 Available tools (28)

Safety column legend: read = read-only, write = mutates state (non-idempotent create), update = idempotent mutation (safe to retry), delete = destructive (data loss). See Safety annotations below for details.

Lists & tasks

Batch operations (saves API calls)

Sub-tasks (checklist items)

Linked resources (external URLs attached to a task)