On twitter I saw that that the CLI was mentioned.

Searching the repo found, of course, some entries https://github.com/keepassxreboot/keepassxc/search?q=cli

The manpage mentions the name keepassxc-cli. Ok, I can work from there. But it's really a bit hidden.

Mention the CLI on the website, in the documentation and in the wiki. It is really a highlight to have it for scripting without having to install yet another application.