# FAQs

### **Is Nimbalyst open source?**

Yes. Nimbalyst is open source and the code lives at [github.com/nimbalyst](https://github.com/nimbalyst). You can read the source, file issues, and contribute pull requests.

### **Can I use my existing Claude Code custom commands**

Yes

### **Can I have multiple workspaces open?**

Yes, unlimited windows. Each workspace is independent. Switch with window shortcuts.

### **Is my data sent to AI providers?**

Only when you use AI features, then document context is sent with messages.

API keys are sent only to authenticate.

If you use LM Studio, then nothing is sent (local)

### **Nimbalyst keeps opening my .md files instead of VS Code (or another app)**

This is a macOS behavior, not a Nimbalyst issue. On Mac, the "Always Open With" option in the right-click menu only applies to **that specific file**, not all files of that type.

To change the default app for **all** `.md` files:

1. In Finder, select any `.md` file
2. Press **⌘ + I** (Get Info)
3. Under **Open with**, select your preferred app (e.g., Visual Studio Code)
4. Click **Change All...**

This tells macOS to open every `.md` file with your chosen app going forward.

### **Can I use Nimbalyst offline?**

Full markdown editor functionality is available offline.

AI features require internet (except LM Studio).

### **What languages does Nimbalyst support?**

English today

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