Live dashboard
CPU, memory and disk gauges that turn crimson over your limits, and a table of every running process with its security tier.
Kavan · for Windows
Find what's slowing your PC, and end it safely.
Kavan watches your Windows system, explains what is using it up, and lets you or Claude close the right program, with a safety engine that can never touch the parts of Windows that keep it running.
Windows 10 and 11 · Free · Runs entirely on your PC
How it works
Three steps, and you stay in charge.
It watches.
Kavan reads CPU, memory and disk every two seconds and records the history, even with the window closed.
It explains.
When something spikes, it records which program was using the most, and shows it on a graph.
You decide.
You confirm each kill in the app, or ask Claude. Kavan will not end anything on its own.
What you get
Everything you need to find the cause.
Alert history
Every alert saved with when it started, how high it went, and what was using the most. Filter by date, type and severity.
Performance trends
Charts from one hour to seven days. Drag to zoom into a spike. Gaps are shown as gaps, never joined across.
Undo for kills
End the wrong program by mistake and restore it in one click, from the toast or from Recently Killed.
Protected apps
Mark programs Kavan must never end, even if you or Claude ask, and programs it should record quietly without alerting.
Works with Claude
Ask Claude to find what's slow and clean it up. Seven tools, and every kill still needs your confirmation.
Safety
Built so it can't break Windows.
Every process is sorted into one of four tiers before anything can be done to it. The tier decides what is allowed.
- Tier 1: System
System. Windows' own processes. They can never be ended, by you or by Claude, and the block sits in front of the operating-system call itself.
- Tier 2: Essential
Essential. Apps you work in, like your editor and browser. A clear warning, then your confirmation.
- Tier 3: Optional
Optional. Background programs. Safe to end if you need the resources.
- Tier 4: Unverified
Unverified. An unknown program using lots of CPU with no window. Flagged as suspicious.
Two steps to kill. A kill is staged, then confirmed. The confirmation expires after five minutes and works for one program once.
Everything is logged. Every kill, block and restore is written to a local audit log.
Nothing leaves your PC. No cloud, no account, no API key, no telemetry. The app talks only to itself on your machine, and refuses requests from web pages.
Checked by 641 backend tests and 81 desktop tests at version 2.1.5.
See it
This is the real app.
Captured from Kavan 2.1.5, in the theme you are using.
With Claude
Or just ask.
If you use Claude Desktop, Claude can look at your system and propose what to close. It proposes, you confirm, and Kavan blocks anything in Tier 1.
An example conversation
You
My laptop is lagging. What's going on?
Claude
Chrome is using 2.1 GB and a background updater is at 38% CPU with no window. I'd suggest closing the updater. Want me to?
You
Yes.
Claude
Done. It freed 310 MB. If you need it back, I can restore it.
And when it should say no
You
Close explorer.exe
Claude
That's a protected Windows process. Kavan won't end it.
These conversations are illustrations, not recordings. The desktop app works fully without Claude.
Requirements
What you need.
Kavan is not a one-click install yet. The background service runs from a Python environment that you set up once.
- Windows 10 or 11
- 64-bit.
- Python 3.11 or newer
- Runs Kavan's background service. The installer does not include Python, so this is a one-time setup. The steps are in the download section.
- Claude DesktopOptional
- Only for the Claude features. The desktop app works without it.
- Administrator rightsOptional
- Needed only to end system-level programs. Kavan tells you when it is needed.
Download
Kavan 2.1.5 for Windows.
One download for the desktop app. The background service is set up once, as described below.
Kavan 2.1.5 for Windows
- File
- kavan_2.1.5_x64-setup.exe
- Size
- 2.3 MB
- Released
- 31 October 2026
Windows may warn that the app is from an unknown publisher, because it is not code-signed yet. Choose “More info” then “Run anyway” if you trust the source.
SHA-256 checksum
BC2F4CD74C890721705AA7B8FFB31E6AC73867350A528DD347A69643A724C8FAInstall
Run the installer. If Windows warns about an unknown publisher, see the note above the button.
Install Python 3.11 or newer, if you do not have it.
Get the mcp-server folder from the repository. In a terminal inside it, set up its Python environment:
python -m venv venv .\venv\Scripts\Activate.ps1 pip install -r requirements.txtOpen Kavan, go to Settings, and under Startup choose that folder as the Backend location.
Connect Claude Desktop (optional)
Open %APPDATA%\Claude\claude_desktop_config.json and add this, with the paths changed to where mcp-server is on your PC:
{ "mcpServers": { "KavanMCP": { "command": "C:\\path\\to\\KavanMCP\\mcp-server\\venv\\Scripts\\python.exe", "args": [ "C:\\path\\to\\KavanMCP\\mcp-server\\main.py" ] } } }Restart Claude Desktop. The Kavan tools appear automatically.
Uninstall
Remove Kavan from Windows Settings, under Apps. Its history and settings are stored in the mcp-server/data folder, so delete that folder too if you want them gone.
FAQ
The catches, plainly.
Is it safe to let an AI close programs?
Every process is sorted into one of four tiers first. Tier 1, the parts of Windows that keep it running, can never be ended, by you or by Claude. Everything else needs a confirmation, and a confirmation works once and expires after five minutes.
Can Claude close something without asking me?
No. Every kill needs your confirmation, and a program on your protected list is refused.
Does it send my data anywhere?
No. Nothing leaves your PC. There is no cloud, no account, no API key and no telemetry.
I ended the wrong program. Can I get it back?
Yes, with Undo on the toast or Restore on the Recently Killed page. It restarts the program. It cannot bring back unsaved work.
Do I need Claude?
No. The desktop app is complete on its own. Claude is an extra for people who already use Claude Desktop.
Does it need Administrator rights?
Only to end system-level programs. Kavan tells you when it is needed.
Does it slow my PC down?
The background scan costs about 2% of one core, once a minute.
Which versions of Windows?
Windows 10 and 11, 64-bit. There is no Mac or Linux version.