Win Toast

An MCP (Model Context Protocol) server that lets AI assistants send Windows toast notifications and dialog boxes. Give your AI a voice on your desktop.

Why mcp-win-toast?

AI assistants are powerful — but they work silently in the background. With mcp-win-toast, your AI can actively notify you through native Windows UI, turning it into a true desktop companion.

Use Cases

Long Task Completion Alert

Ask the AI to analyze a large codebase, generate a report, or run a complex workflow — and get a toast notification the moment it's done. No need to keep watching the screen.

"Refactor all the API endpoints, and notify me when you're finished."

Scheduled Reminders

Combine with other MCP tools to set up reminders that pop up as native Windows notifications.

"Remind me in 30 minutes to check the deployment status."

Build & Test Result Notifications

Let the AI run your build pipeline or test suite and push the result as a toast — pass or fail, you'll know right away.

"Run the tests and show me a toast with the results."

Important Decision Checkpoints

Use dialog boxes to force a pause and get explicit user confirmation before the AI proceeds with a critical action.

"Before deleting any files, show me a dialog to confirm."

System Monitoring Alerts

Have the AI periodically check disk space, CPU usage, or service health, and alert you only when something needs attention.

"Monitor my disk space and warn me if it drops below 10GB."

Tools

show_toast

Displays a Windows toast notification.

Parameter	Type	Description
title	string	Notification title
message	string	Notification body text

show_dialog

Displays a standard Windows dialog box with an OK button. Execution is blocked until the user clicks OK, making it ideal for confirmations and important alerts.

Parameter	Type	Description
title	string	Dialog title
message	string	Dialog body text

Setup

git clone https://github.com/ShigeruWakida/mcp-win-toast.git
cd mcp-win-toast
npm install
npm run build

Claude Desktop Configuration

Add the following to your claude_desktop_config.json:

{
  "mcpServers": {
    "win-toast": {
      "command": "node",
      "args": ["C:\\path\\to\\mcp-win-toast\\build\\index.js"]
    }
  }
}

Combo: mcp-win-toast + YakusokuKeeper

YakusokuKeeper is an MCP server that enforces rules on Claude's behavior based on time, input count, or first interaction. By combining it with mcp-win-toast, you can build a self-managing AI assistant that notifies you at the right moments — automatically, without being asked.

Break Reminder

Add a time-based rule in YakusokuKeeper to remind you to take a break every 30 minutes, delivered as a toast notification.

YakusokuKeeper rule:

time_based:
  - rule: "Call show_toast with title 'Break Time' and message 'You have been working for 30 minutes. Stand up and stretch!'"
    minutes: 30

Progress Report at Regular Intervals

Have Claude automatically summarize what it has done every 10 interactions and notify you.

YakusokuKeeper rule:

input_count:
  - rule: "Summarize what you have accomplished so far in 2-3 bullet points, then call show_toast with title 'Progress Report' and the summary as the message."
    count: 10

Welcome Briefing on Session Start

Greet the user with a toast notification and a quick status overview at the beginning of every session.

YakusokuKeeper rule:

first_time:
  - rule: "Call show_toast with title 'Session Started' and message 'Hello! Ready to assist you. Let me know what you need.' as a greeting."

Critical File Protection

Show a blocking dialog for confirmation whenever Claude is about to modify important files.

YakusokuKeeper rule:

first_time:
  - rule: "Before editing any file matching *.env, *.config, or docker-compose.*, always call show_dialog with title 'Confirm Edit' and a message describing which file you are about to modify. Wait for the user to acknowledge before proceeding."

Session Duration Warning

Warn the user with a dialog box after a long session so they can decide whether to continue.

YakusokuKeeper rule:

time_based:
  - rule: "Call show_dialog with title 'Long Session' and message 'You have been working for over an hour. Would you like to wrap up or continue?' to check in with the user."
    minutes: 60

Prompt Examples for Claude Code

You can also give these instructions directly as prompts in Claude Code:

Every time you finish a task, send me a toast notification with a brief summary.

If you are about to delete or overwrite any file, show a dialog box to confirm before proceeding.

After every 5 messages, show a toast with a short progress update of what we have accomplished.

Requirements

• Windows 10 / 11
• Node.js 18+

License

ISC