I had originally planned to build a personal AI OS based on Claude Code. Now that Claude Skills exist, it seems unnecessary. Building it on Claude Desktop is enough, and the experience is better.
For the file system, I’d use Obsidian locally. Then I’d connect Claude through the Obsidian MCP I built. If needed, I could use Claude Project, upload the documents for a dedicated project, and set a specific System Prompt.
All kinds of customization needs can be handled through Claude Skills. After building Super Analyst and Super Writer, I found that Skills are really useful. Prompts, workflows, and tool calls are all encapsulated in them. They can fully meet everyday needs.
The only drawback of this setup is that, unlike Claude Code, you can’t switch models. You have to stay connected to the internet and use Claude.