MCP File System Server

A server for secure, sandboxed file system operations.

A Model Context Protocol (MCP) server that provides secure file system operations through a sandboxed environment.

- Secure File Operations: All operations are confined to a configurable base directory
- Path Traversal Protection: Prevents access to files outside the allowed directory
- Comprehensive Tools: Read, write, list, delete, move, and copy files
- Error Handling: Robust error handling with informative messages

export MCP_FILE_SYSTEM_BASE_DIR="/path/to/your/sandbox"

- read_file(file_path: str)- Read file contents
- write_file(file_path: str, content: str)- Write content to file
- list_directory(directory_path: str)- List directory contents
- delete_file(file_path: str)- Delete a file
- move_file(source_path: str, destination_path: str)- Move/rename a file
- copy_file(source_path: str, destination_path: str)- Copy a file

The server uses theMCP_FILE_SYSTEM_BASE_DIRenvironment variable to set the base directory for all file operations. If not set, it defaults to/tmp/mcp_file_system.

- All paths are resolved relative to the base directory
- Path traversal attacks (using..) are prevented
- Access outside the base directory is blocked
- File operations are sandboxed

Run in development mode with auto-reload:

To use this server with Claude Desktop, add the following to your~/Library/Application Support/Claude/claude_desktop_config.json:

{ "mcpServers": { "file-system": { "command": "uv", "args": [ "--directory", "/ABSOLUTE/PATH/TO/mcp_file_system", "run", "src/main.py" ] } } }

Replace/ABSOLUTE/PATH/TO/mcp_file_systemwith the actual absolute path to your project directory.

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