About Filesystem
Filesystem is an MCP server in the Files category: filesystem MCP server for 13thx MCP stack.
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Install
claude mcp add filesystem -- npx -y @matj.dev/filesystem-mcpnpx -y @matj.dev/filesystem-mcpThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
Tools (4)
createCreate or overwrite a file
Parameters not published.
insertInsert text at a specific line
Parameters not published.
str_replaceReplace an exact string in a file
Parameters not published.
viewRead file contents or list directory (with line numbers)
Parameters not published.
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README
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.
README copy captured when this server was indexed; it may lag the repository. The original is authoritative.