This is a fork and a patched version of original repology,

Copyright (c) 2024-2025 Brian Callahan <bcallah@openbsd.org> ISC
License, that supports Slackware by default using SlackBuilds.org as
the default repository.

This means that you don't need to specify --repo in your commands
because it will always look at repologyD0Torg/repository/slackbuilds

Examples:

repology --maintainer rizitis@gmail.com
  ...will list all maintainer`s packages on SBo

repology --search vlc
  ...will list vlc folder and version on SBo + if newer version exist

repology --outdated
  ...will list outdated packages on SBo

For official distribution packages HOWEVER you should specify --repo
like this:

repology --maintainer volkerdi@slackware.com --repo slackware_15_0
repology --search emacs --repo slackware64_15_0
repology --outdated --repo slackware_current
repology --category xfce --repo slackware64_current