github
your repos, recent activity and contribution graph.
add your github username in integrations and the widget shows your public repo count, your followers and what you have been pushing lately.
the contribution graph
turn it on and the familiar year of green squares renders on your page, tinted to your accent color rather than github's green. it is fetched with your activity, so it costs nothing extra in page load terms.
no authentication is involved. it reads what is already public on your github profile, which means a private contribution history stays private.
still stuck? ask in the discord, someone will know.