Summary
Gives Claude direct access to your local filesystem with four focused operations: view (read files or list directories with line numbers), create (write or overwrite files), str_replace (exact string replacement), and insert (add text at specific lines). Built for workflows where you need Claude to manipulate files based on data from other sources, like pulling Gmail attachments and saving them locally, updating configuration values across files, or generating reports from calendar data and writing them to disk. Supports both stdio and HTTP transports. The tool set is intentionally minimal, designed around precise file operations rather than broad filesystem management.
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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:
- Install Git and Node.js
- Clone the repository
- Install dependencies with
npm install - Run
npm run testto run tests - Build with
npm run build
Releases
Versions follow the semantic versioning spec.
To release:
- Use
npm version <major | minor | patch>to bump the version - Run
git push --follow-tagsto push with tags - Wait for GitHub Actions to publish to the NPM registry.
Featured
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →Configuration
MCP_TRANSPORT*Transport type.
Categories
Registryactive
Packagefilesystem-mcp
TransportSTDIO, HTTP
AuthRequired
UpdatedMar 7, 2026
