The now-deprecated [[ https://secure.phabricator.com/conduit/method/harbormaster.querybuilds/ | harbormaster.querybuilds method ]] included the build name in the results. It would be useful for the new method ([[ https://secure.phabricator.com/conduit/method/harbormaster.build.search/ | harbormaster.build.search ]]) to include that value in the results as well. Currently, I don't believe there is any other way to get this value from the API.