filesystem-mcp

MCP server for filesystem operations - read, create, and edit files.

Use Cases

Save email attachments: "Download all PDFs from my accountant's emails this month" → searches Gmail for matching emails, extracts attachments, and saves them to a local folder.

Update config files: "Change the API endpoint from staging to production in my config" → finds the config file, replaces the URL, and shows you the diff.

Generate reports: "Create a summary of today's calendar events" → reads your calendar, formats a markdown report, and saves it to your notes folder.

Code refactoring: "Rename the function getData to fetchUserData in src/api.ts" → reads the file, makes the precise replacement, and confirms the change.

Backup before changes: "Save a copy of my .zshrc before I modify it" → reads the current file and writes a timestamped backup.

Setup

claude mcp add filesystem-mcp -- npx -y filesystem-mcp

Or with HTTP transport:

# Start the server
MCP_TRANSPORT=http PORT=3000 npx -y filesystem-mcp

# Add to Claude
claude mcp add --transport http filesystem-mcp http://localhost:3000/mcp

Tools

Tool	Description
view	Read file contents or list directory (with line numbers)
create	Create or overwrite a file
str_replace	Replace an exact string in a file
insert	Insert text at a specific line

Contributing

Pull requests are welcomed on GitHub! To get started:

1. Install Git and Node.js
2. Clone the repository
3. Install dependencies with npm install
4. Run npm run test to run tests
5. Build with npm run build

Releases

Versions follow the semantic versioning spec.

To release:

1. Use npm version <major | minor | patch> to bump the version
2. Run git push --follow-tags to push with tags
3. Wait for GitHub Actions to publish to the NPM registry.