File Change Watcher MCP Server for VSCode Insiders + Copilot

Overview

This mcp server watches for file changes and invokes an agent to deal with it. I run custom subagents and they communicate via a task list held in tasks.md. Any agent can write a task, but the PM is responsible for reading the task list and delegating the next task to the appropriate agent. This tool let's me watch for changes in the task list and automatically ask the PM to deal with it. Also, whever I add new requirements to my requirements.md file, it now triggers an agent to write new stories, which triggers the backlog-prioritiser agent, and an updated backlog invokes the PM to write new tests.

Usage

"FileWatcherMCP": {
    "command": "bunx",
    "args": ["--bun", "@snapp.co.ke/filewatchermcp"]
}

Tools

watch

Watch a file and trigger VS Code chat when it changes.

Parameters:

• filename - Full path to the file to watch
• prompt - Message to send when file changes
• agent - VS Code agent to invoke (defaults to "project-manager")

unwatch

Stop watching a file.

Parameters:

• filename - Full path to the file to stop watching

list

List all currently watched files.

Parameters: None

Shutdown

There is no persistance. If the server stops it will lose all watches

Stack

This is written to work with my system which uses vscode-insiders and bun.

Architecture

For this to work it has to execute a shell command on the host, so it cannot easily be run in a docker container, hence the bun implementation.

Contributions

If you want nodejs support, or support for the stable vscode release, fork the repo and make your changes. We cannot test them, so we cannot merge your changes to our project.