Hi, Coveralls CTO here, the pass/fail status of any commit is shown as a green check / red x in the commit list and at the top of the repo details page as the "most recent commit".

As for a % badge, you can use our new Coveralls GitHub Action to post your coverage data to https://coveralls.io, then add the badge to your readme:

https://github.com/marketplace/actions/coveralls-github-acti...