Claude Desktop: hidden debug data consumes macOS disk space

Hi,

A quick note about reclaiming massive HD space if you have Claude Desktop installed on macOS.

Writing this mainly as a note to myself, but thought it could help others too.


After installing Claude Desktop on my Mac, the system was getting sluggish. I discovered Claude Desktop was creating a hidden folder with an insane amount of debug data - 472GB in my case!


How did it find the missing amount of diskspace?:

1. I compared my home folder size (730GB) to the visible folders in my home folder (140GB) - so 590GB was missing!

2. Checked hidden files and found ~/.claude/debug contained the culprit

3. I used OnyX to browse hidden files and get size info


How was it fixed:

Close Claude Desktop first, then run:

rm -rf ~/.claude/debug

Note that this command took about 20 minutes for me to finish!!! and it reclaimed nearly half my HD space!


Now you can also prevent this from happening:

  • Add this to your ~/.zshrc file:
export CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC=true
  • Then run: source ~/.zshrc


Hope this helps someone!

Joris

MacBook Pro 16″, macOS 26.2

Posted on Jan 31, 2026 12:54 PM

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Claude Desktop: hidden debug data consumes macOS disk space

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