Installing third-party add-ons allows anyone to create add-on repositories to share their add-ons for easily. To try this locally, you can use our example add-on repository at
Home Assistant cannot guarantee the quality or security of third-party add-ons. Use at your own risk.

From the main panel open the add-on store.

Add the URL of the repository and then press "Add". A new card for the repository will appear.

Help: Repository is not showing up

If you have added a repository, but it’s not showing up, it means that the repository contains invalid configuration. Go to the panel and then the System tab to find the System log. It should tell you what went wrong. Report this information to the repository author.