I found this from Western Kentucky University:
"CUPS Admin is a native macOS app that puts back the CUPS web interface (http://localhost:631) Apple removed in macOS 27 — cupsd, lpadmin and IPP Everywhere queues all still work, only the browser admin page is gone. The sidebar lists every queue with its state and active jobs; select one to see its status, hold, release, move or cancel its jobs, and change its default options the way the old "Set Default Options" page did, including per-driver settings like Ricoh user codes. Common changes (color or black & white, duplex, Letter paper, a user code, the default printer) are one-click Quick Actions, and every change is read back from cupsd so nothing fails silently. It ships with cupsadmin, a command-line tool for scripts, Mosyle/Jamf/Munki commands and quick checks. No third-party dependencies; builds with the Xcode Command Line Tools alone."
https://github.com/kfattic/cupsadmin