Questions and answers
Is Nook free and safe?
Nook is free and open source (MIT-licensed code), so anyone can read exactly what it does. It runs 100% locally: no network calls, no telemetry and no account.
Does Nook send my code or prompts anywhere?
No. Events go from Claude Code’s hooks to a small local relay and then to Nook, all on your own computer. Nook makes no network calls and has no telemetry.
Will Nook approve things for me or get in Claude Code’s way?
No. Nook never approves anything without your click, and it never blocks Claude Code. The relay gives the app 300 ms to pick up; if Nook is closed, slow or crashed, it exits and Claude Code asks in the terminal as usual.
Does Nook change my Claude Code settings?
Only when you ask. Installing hooks shows the exact diff of what will change in ~/.claude/settings.json and takes a dated backup first. Nothing is written until you click, hooks from other tools are left alone, and Uninstall hooks removes only Nook’s entries the same way.
Why does Windows show "Windows protected your PC"?
The installer is not code-signed yet, and SmartScreen does not know new, unsigned programs. If you downloaded it from the official GitHub release, choose More info, then Run anyway. You can verify the download with Get-FileHash .\Nook-Windows-0.1.0-setup.exe -Algorithm SHA256 and compare it with SHA256SUMS.txt, or build Nook from source.
My antivirus flagged nook-hook.exe. What now?
That is a typical false positive for small, unsigned programs that other programs start often. You can report it to Microsoft at https://www.microsoft.com/wdsi/filesubmission as "Software developer" and "Incorrectly detected", or build Nook from source.
Which systems and Claude Code setups does it work with?
Nook 0.1.0 is built for Windows 10 and 11. It follows Claude Code through Claude Code’s hooks, so sessions appear whether you start Claude Code in a terminal window or in the integrated terminal of an editor such as VS Code.
Does Nook support Cursor or other agents?
Yes. Nook shows Cursor agent sessions next to Claude Code ones, status only: you can see what a Cursor agent is doing, but you cannot approve or answer from the island. Turn it on in Settings, Cursor, Install (preview, dated backup, click). New in v0.1.x (unreleased build). Claude Code running inside Cursor’s terminal works as a normal Claude Code session.
Does it slow down my PC?
Nook is a small desktop app that reacts to events from Claude Code’s hooks. It also shows CPU, GPU and RAM in the island, so you can check its footprint on your own machine.
Who makes Nook, and is it affiliated with Anthropic?
Nook is an independent open-source project by Zubair Bin Shaukat, a software engineer from Lahore. It is based on Coucou by Louis Raillé (MIT), with credit to Edurique’s Windows multi-session work, and is not affiliated with or endorsed by Anthropic. Claude and Claude Code are trademarks of Anthropic.
How do I uninstall Nook?
First open Settings, Claude Code and click Uninstall hooks (and Uninstall for the usage status line if you installed it), because uninstalling the app does not edit your Claude Code settings. Then quit Nook and remove it from Windows Settings, Apps, Installed apps. Your preferences in %APPDATA%\Nook usually stay unless you delete that folder.
Where does Nook store its data?
On your own PC only. Preferences and Shelf data are in %APPDATA%\Nook, the relay and a small log are in %LOCALAPPDATA%\Nook, and the log records event names and decisions, never the content of your sessions.
Does Nook need administrator rights?
No. The installer installs for the current user, and Nook runs as a normal program. Running Nook and Claude Code at different privilege levels can stop the relay from connecting, so run both normally.
Are the usage limits always shown?
No. They come from Claude Code’s status line, so you have to install the usage status line in Settings, they appear on subscription plans, and they update only while a session runs. They are shown as of the last Claude Code activity.
Does Nook work on macOS or Linux?
The 0.1.0 release is for Windows 10 and 11. The same code can be built for Linux from source. Nook is a fork of Coucou, the project it is based on; look there if you want the original.
Will the installer be code-signed?
It is planned. Releases are unsigned today. Code signing is planned through the SignPath Foundation’s free programme once the project qualifies, and a SHA256SUMS.txt file is published with every release either way.
How do I report a bug or ask for a feature?
Open an issue on GitHub at https://github.com/zubairbinshaukat/nook/issues/new with your Nook, Windows and Claude Code versions and the last lines of nook.log (redact paths). Security problems should go through a private security advisory instead.
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