MCP File System Server

What is MCP File System Server?

MCP File System Server is a Model Context Protocol server that provides file system operations including navigation, reading, writing, analyzing files, and executing shell commands. It is designed for AI agents and developers who need to interact with the local filesystem programmatically through MCP tools.

How to use MCP File System Server?

The server exposes tools under categories such as file and directory operations, editing and searching, analysis, batch operations, project navigation, code quality, and command execution. Users invoke these tools (e.g., ls, read_file, write_file, grep, summary, ruff_check, shell_command) by name with the required parameters.

Key features of MCP File System Server

• List, read, write, copy, move, and delete files and directories
• Search files with regex patterns using grep
• Edit files with multiple search/replace operations
• Analyze Python and Markdown files for structure
• Run shell commands with a configurable timeout

Use cases of MCP File System Server

• Browsing and managing project directory structures during development
• Reading and editing source code or configuration files programmatically
• Searching across codebases for patterns or specific text
• Running linting and formatting on code files via ruff
• Summarizing project files (Python functions/classes, Markdown headers) to understand a new codebase

FAQ from MCP File System Server

Does the summary tool work on any file type?

No, the summary tool only analyzes Python (.py) and Markdown (.md) files. For Python it lists functions and classes; for Markdown it lists headers.

Is there a security risk with the shell command tool?

Yes. The shell_command tool allows arbitrary command execution on the host system. Always inspect and validate commands before running them, especially from untrusted sources.

How do I navigate to a user's home directory?

The cd command supports home directory expansion with ~, so you can use cd("~") to change to the home directory.

What is the CLAUDE.md file used for?

The work_on tool changes to a directory, lists its contents, and retrieves notes from a CLAUDE.md file, making it useful for getting familiar with a project at the start of a chat.