my-fs-mcp

My MCP for Filesystem Access for Claude

References

Claude Desktop Extensions

TL;DR

Create dxt bundle with:

make

Drag dxt-package/my-fs-mcp.dxt to Claude/Settings.../Extensions to install bundle.

Dev

Requirements

• pixi
• uv

Init the dxt

Init dxt project with a manifest

npx @anthropic-ai/dxt init --yes

Note When creating the manifest, in the mpc_config section, put the full path to the python interpreter -> "command": "/Users/fperez/.pyenv/shims/python"

Bundle Python libs and Package Project

pixi install
pixi run bundle
pixi run pack

The output .dxt file is created on the dxt-package directory. Once the .dxt file is created you can drag and drop it to Claude (in the Settings/Extensions section.)

Testing it

Run server with:

pixi test

Then open the inspector:

DANGEROUSLY_OMIT_AUTH=true npx @modelcontextprotocol/inspector

And then:

• go to the URL specified
• select stdio as connection method
• put pixi in Command input box
• put run python server/main.py --debug in the Arguments input box
• click connect
• go to tools and list them

NOTE For testing the server as extension is run when added to Claude try:

PYTHONPATH="/Users/fperez/Library/Application Support/Claude/Claude Extensions/local.dxt.francisco-perez-sorrosal.my-fs-mcp/server/lib" python /Users/fperez/Library/Application\ Support/Claude/Claude\ Extensions/local.dxt.francisco-perez-sorrosal.my-fs-mcp/server/main.py --debug --workspace=${HOME}/Documents