Jira Kit is a free Chrome add-on developed by liusungti that aims to enhance the user experience of managing Jira issues. This add-on allows users to easily toggle the visibility of the sidebar in the "Issues" interface.

Upon installation, users are required to refresh the webpage for the newly installed add-on to be loaded. Once installed, Jira Kit provides users with the ability to adjust the height of the sidebar by first opening the editor. This flexibility allows users to customize their workspace according to their preferences.

One drawback of Jira Kit is that it may occasionally become ineffective and require users to close and reopen the editor in order to restore its functionality. Despite this minor inconvenience, Jira Kit proves to be a valuable tool for Chrome users who frequently work with Jira issues.