koji list-api can be made browsable via web. It should use actual data from hub, than hardcoded static page, so _list_api and system.methodHelp could be used here.
koji list-api
_list_api
system.methodHelp
Simple variant: #1821
Metadata Update from @tkopecek: - Custom field Size adjusted to None
Metadata Update from @tkopecek: - Issue set to the milestone: 1.20
Metadata Update from @jcupova: - Issue tagged with: testing-ready
Metadata Update from @jcupova: - Issue tagged with: testing-done
Commit ef91057c fixes this issue
Commit 4ae799c9 fixes this issue
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/koji/koji/issues/1813
Please continue any further discussion there.