# My April 2025 Claude MCP Demo: Create Files, Then Improve the Existing App

> A historical walkthrough of a filesystem connection and a small Python GUI project.

Canonical page: https://pyrosoft.pro/blog/claude-just-got-file-access-with-model-context-protocol-mcp-6e9c771c

Published: 2026-11-04

Some links to other products on this page are affiliate links, and we may earn a commission if you buy through them. It costs you nothing extra, and it has not changed what this article says — where a competitor is the better answer, we say so.

The useful moment in this April 2025 demo is seeing a file appear in the project folder, then asking for a change in another chat and seeing the existing app improve. It moves the workflow beyond copying code out of a message.

## Connect a filesystem tool

In the recording, I edit Claude Desktop's MCP configuration to connect a filesystem server to selected folders, then restart the app. I approve access prompts during the demonstration.

This article describes that historical setup. The old configuration, menu positions and Node-version note are not current installation instructions, and I have not reproduced my personal folder paths here.

## Create a small Python GUI project

I ask for an app with a repository URL and target-directory field. The demo produces a project folder, Python files, supporting setup material, a README and a launcher.

I open the result and reach the GUI. That is the result shown at this stage; I do not establish a production-ready downloader or test arbitrary repository URLs.

## Make a change in a fresh chat

Next, I point a new chat at the existing folder and ask for a light-and-dark theme switcher. I approve the file edits, reopen the app and show the switch working. I also demonstrate reorganizing the project into subfolders.

The distinction I am showing is creating files and then working with an existing project. It is not an offline-inference or security-audit claim.

SmartDevil sponsored the video. My [screen-protector installation and spare-sample test](<https://pyrosoft.pro/blog/effortless-screen-protection-smartdevil-smartpull-box-for-iphone-review-60af64ab>) is the separate hardware demonstration; its original sponsor link is also preserved below.

## Links from the video

**Affiliate disclosure:** These links may earn me a commission at no extra cost to you.

- [MikeTheTech original Patreon link](<https://www.patreon.com/mikethetech>)

- [SmartDevil sponsor original Amazon link](<https://amzn.to/3FZ8zJ9>)

Links and offers are from the video description. Availability, prices and offer terms may change.