MCP File Navigator

Overview

MCP File Navigator is a secure Model Context Protocol server designed for safe file system operations. It provides AI assistants with controlled access to files and directories while maintaining strict security through path validation and dynamic storage management.

Features

File Operations

• Read file contents with encoding support
• Write new files safely
• Append to existing files
• Update file contents
• Delete files with confirmation
• Copy and move files

Directory Management

• List directory contents
• Create directory hierarchies
• Remove directories
• Navigate directory structures
• Search within directories

Path Security

• Robust Validation: Prevent directory traversal
• Whitelist Approach: Configurable allowed paths
• Path Normalization: Handle various path formats
• Symbolic Link Protection: Prevent link exploits

Dynamic Storage Management

• Configure storage locations at runtime
• Multiple storage root support
• Workspace-based organization
• Temporary file handling
• Storage quota management

Security Architecture

Input Validation

• Path sanitization
• File name validation
• Extension checking
• Size limits
• Content validation

Access Control

• Per-directory permissions
• Operation-level restrictions
• Read-only mode
• Write protection

Audit & Compliance

• Operation logging
• Access tracking
• Change history
• Security events

Use Cases

• Secure document management
• Configuration file editing
• Log file analysis
• Content generation and storage
• File-based workflows
• Data import/export
• Template processing
• Backup operations

Configuration

Storage Locations

{
  "storageRoots": [
    "/allowed/path/1",
    "/allowed/path/2"
  ],
  "defaultRoot": "/allowed/path/1"
}

Security Settings

{
  "maxFileSize": "10MB",
  "allowedExtensions": ["txt", "md", "json"],
  "readOnly": false
}

Technical Implementation

Built with security-first approach using modern file system APIs and comprehensive validation layers. Implements fail-safe mechanisms to prevent unauthorized access.

Integration

Compatible with Claude Desktop, Cursor, VS Code, and other MCP clients. Requires configuration of allowed storage locations before use.

Performance

• Efficient file streaming
• Cached directory listings
• Async operations
• Minimal memory footprint