MCP File Server

A Model Context Protocol (MCP) server implementation providing file system operations through a standardized interface.

Overview

The MCP File Server enables AI models to perform file operations on the local file system through a standardized API. It’s built using the Model Context Protocol SDK and provides tools for reading, creating, and listing files.

Features

• Create Files: Create new files with specified content
• Read Files: Read the contents of existing files
• List Directory Contents: List files and directories with detailed information
• Performance Monitoring: Built-in Sentry integration for error tracking and performance monitoring

Installation

npm install

Usage

Start the MCP File Server:

node src/index.js

The server communicates through stdin/stdout using the MCP protocol.

Available Tools

createfile

Creates a new file at the specified path with the provided content.

Parameters:

• filePath: Path where the file should be created
• content: Content to write to the file

Returns:

• Success message with file path and size information

readfile

Reads the content of a file at the specified path.

Parameters:

• filePath: Path to the file to read

Returns:

• The content of the file

listfiles

Lists files and directories at the specified path.

Parameters:

• path: Directory path to list contents from

Returns:

• A markdown table containing file names, sizes, and types

Environment Variables

• SENTRY_DSN: Sentry Data Source Name for error tracking (optional)

Dependencies

• @modelcontextprotocol/sdk: The MCP SDK package
• zod: Schema validation
• @sentry/node: Error tracking and performance monitoring

Examples

Examples of how to call these tools through the MCP protocol:

{
  "name": "createfile",
  "params": {
    "filePath": "example/test.txt",
    "content": "Hello, world!"
  }
}

{
  "name": "readfile",
  "params": {
    "filePath": "example/test.txt"
  }
}

{
  "name": "listfiles",
  "params": {
    "path": "example"
  }
}