Download and install the latest version of Filestar.
Right click on one or more Sit file(s) on your desktop and select Convert with Filestar.
Type extract in the search box.
Press Extract.
Or let an AI agent do it: filestarcli -i file.sit -c "extract" (how).
Let your AI agent extract SIT
Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine. It works on macOS only.
Install Filestar and add it to your agents:
npm install -g filestar
filestarcli agent install
Then ask your agent:
“Use Filestar to extract SIT in my Downloads folder”
Or run it yourself:
filestarcli -i file.sit -c "extract"
Runs on your computer, so your files stay on it. Works on macOS. 50 free conversions with the npm install, no account needed.
Can my AI agent extract SIT?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.sit -c "extract" on your computer, so your files stay on it.
StuffIt Archive (.sit) is a compressed archive format originally developed for the classic Mac OS. It bundles multiple files into a single archive while compressing them and preserving Mac-specific data such as resource forks. It was long the standard way to distribute and store files on the Macintosh platform.
