Download and install the latest version of Filestar.
Right click on one or more Cpt 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.cpt -c "extract" (how).
Let your AI agent extract Compact Pro Archive
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 Compact Pro Archive in my Downloads folder”
Or run it yourself:
filestarcli -i file.cpt -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 Compact Pro Archive?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.cpt -c "extract" on your computer, so your files stay on it.
Compact Pro Archive (.cpt) is a compressed archive format used on classic Mac OS, created by the Compact Pro compression utility. It bundles multiple Macintosh files—including resource forks—into a single compressed archive, and served as a popular alternative to StuffIt in the early 1990s.
