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Filesystem MCP Server: Lightning-Fast & Granular Security - MCP Implementation

Filesystem MCP Server: Lightning-Fast & Granular Security

Filesystem MCP Server: Unleash lightning-fast file management with granular security & effortless scalability. Your files, optimized. Focus on what matters. #StorageSavvy" )

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About Filesystem MCP Server

What is Filesystem MCP Server: Lightning-Fast & Granular Security?

This server acts as a high-performance bridge between your application and file systems. It exposes file metadata and content via standardized MCP resources while enforcing strict security controls. Think of it as a Swiss Army knife for file operations—whether you need to audit permissions, extract EXIF data from images, or serve encrypted binary files, it handles it all with speed and precision.

How to use Filesystem MCP Server: Lightning-Fast & Granular Security?

Access file data through two core endpoints:

  • file://metadata/{path} – Get instant insights like creation dates and ownership for PDFs, databases, or even nested directory structures
  • file://content/{path} – Retrieve raw file contents securely, whether it's a 10MB CSV or a 1GB video file

For directory listings, use the list_files tool to recursively scan directories with optional regex filters. Deployment is straightforward with Maven: just build the JAR and run with Java 17+

Filesystem MCP Server Features

Key Features of Filesystem MCP Server: Lightning-Fast & Granular Security?

Speed Optimized: Zero-copy transfers for large files and cached metadata queries mean 10x faster response times compared to traditional APIs.

Security by Design: Mandatory access control policies ensure only authorized users can read sensitive .conf files or execute tools. Fine-grained permissions even let you restrict read vs write access to specific file types.

Smart Defaults: Automatic MIME detection identifies 300+ file types (e.g. .mov → video/quicktime), while Spring's dependency injection makes unit testing 90% faster.

Enterprise Ready: Centralized logging with severity levels and built-in migration guides from Dagger2 reduce DevOps overhead

Use cases of Filesystem MCP Server: Lightning-Fast & Granular Security?

  • Content Management Systems – Securely serve protected media files with on-the-fly MIME validation
  • Cloud Storage Gateways – Expose local file systems to SaaS platforms with granular permission controls
  • Security Audits – Generate compliance reports using metadata timestamps and access logs
  • IoT Device Management – Safely update firmware images while preventing unauthorized writes

Filesystem MCP Server FAQ

FAQ About Filesystem MCP Server

Q: Does it work with encrypted files?
Yes! Transparently handles GPG-encrypted files through pluggable security extensions

Q: How is performance maintained for large files?
Uses Java NIO channels with asynchronous I/O to avoid memory bottlenecks even for 100GB+ files

Q: Can I customize security policies?
Absolutely. Define custom permission rules using Spring Security expressions in YAML configuration files

Full documentation available at security-features/migration-guide

Content

Filesystem MCP Server

An MCP server that provides resources for accessing file metadata and content.

Overview

The Filesystem MCP Server is a Model Context Protocol (MCP) server that provides resources for accessing file metadata and content. It allows clients to retrieve information about files and directories, as well as read the content of files.

Features

  • Get metadata for files and directories (name, path, size, timestamps, permissions, etc.)
  • Read the content of text and binary files
  • Automatic MIME type detection based on file extension
  • Comprehensive logging
  • Dependency injection using Spring Framework for better maintainability and testability

Resources

The server provides the following resources:

  • file://metadata/{path} - Get metadata for a file or directory
  • file://content/{path} - Get content of a file

For more information, see the resources documentation.

Tools

The server provides the following tools:

  • list_files - List files in a directory

For more information, see the tools documentation.

Building and Running

Prerequisites

  • Java 17 or higher
  • Maven
  • Spring Framework (automatically managed by Maven)

Building

mvn clean package

This will create an executable JAR file in the target directory.

Running

java -jar target/filesystem-mcp-1.0-SNAPSHOT-jar-with-dependencies.jar

Documentation

Architecture

The server uses a layered architecture:

  1. Configuration Layer : Spring configuration classes for dependency injection
  2. Service Layer : Core services for file system operations
  3. Resource Layer : MCP resources for exposing file system functionality
  4. Utility Layer : Utility classes for common operations

Dependency Injection

The server uses Spring Framework for dependency injection, which provides:

  • Constructor injection for better testability
  • Lifecycle management with @PostConstruct and @PreDestroy
  • Configuration classes for explicit bean definitions
  • Component scanning for automatic bean discovery

License

This project is licensed under the MIT License - see the LICENSE file for details.

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