you can retire this repository calibre-web support opds natively ;-)

[cedricwalter]

Just FYI:

https://calibre-web.example.com/opds?auth=username:password

see https://github.com/janeczku/calibre-web/wiki/FAQ#which-opds-readers-work-with-calibre-web

[horus68]

Calibre-Web has its merits, but Cops is working perfectly for what it was built for!

Note: this repository (Seblucas COPS) is no longer maintained.

New COPS repository
Since July 2023, you can find a COPS forked version that works with PHP8, including some issues fixes and new features here:
[COPS for PHP 8.x] https://github.com/mikespub-org/seblucas-cops