This is your Overseerr API key, which can be used to integrate Overseerr with third-party applications. Do **not** share this key publicly, as it can be used to gain administrator access!
If you need to generate a new API key for any reason, simply click the button to the right of the text box.
### Application Title
If you aren't a huge fan of the name "Overseerr" and would like to display something different to your users, you can customize the application title!
If you have Overseerr behind a [reverse proxy](../../extending-overseerr/reverse-proxy.md), enable this setting to allow Overseerr to correctly register client IP addresses. For details, please see the [Express documentation](http://expressjs.com/en/guide/behind-proxies.html).
CSRF stands for [cross-site request forgery](https://en.wikipedia.org/wiki/Cross-site_request_forgery). When this setting is enabled, all external API access that alters Overseerr application data is blocked.
If you do not use Overseerr integrations with third-party applications to add/modify/delete requests or users, you can consider enabling this setting to protect against malicious attacks.
One caveat, however, is that _HTTPS is required_, meaning that once this setting is enabled, you will no longer be able to access your Overseerr instance over HTTP (including using an IP address and port number).
These settings filter content shown on the "Discover" home page based on regional availability and original language, respectively. Users can override these global settings by configuring these same options in their user settings.
### Hide Available Media
When enabled, media which is already available will not appear on the "Discover" home page, or in the "Recommended" or "Similar" categories or other links on media detail pages.
Available media will still appear in search results, however, so it is possible to locate and view hidden items by searching for them by title.
When enabled, users will be able to submit requests for specific seasons of TV series. If disabled, users will only be able to submit requests for all unavailable seasons.
When enabled, users with access to your Plex server will be able to sign in to Overseerr even if they have not yet been imported. Users will be automatically assigned the permissions configured in the [Default Permissions](#default-permissions) setting upon first sign-in.
### Global Movie Request Limit & Global Series Request Limit
Select the request limits you would like granted to users.
Unless an [override](../users/README.md#movie-request-limit-and-series-request-limit) is configured, users are granted these global request limits.
Note that users with the **Manage Users** permission are exempt from request limits, since that permission also grants the ability to submit requests on behalf of other users.
If [Enable New Plex Sign-In](#enable-new-plex-sign-in) is enabled, any user with access to your Plex server will be able to sign in to Overseerr, and they will be granted the permissions you select here upon first sign-in.
This setting only affects new users, and has no impact on existing users. In order to modify permissions for existing users, you will need to [edit the users](../users/README.md#editing-users).
To set up Plex, you can either enter your details manually or select a server retrieved from [plex.tv](https://plex.tv/). Press the button to the right of the "Server" dropdown to retrieve available servers.
Depending on your setup/configuration, you may need to enter your Plex server details manually in order to establish a connection from Overseerr.
{% endhint %}
#### Hostname or IP Address
If you have Overseerr installed on the same network as Plex, you can set this to the local IP address of your Plex server. Otherwise, this should be set to a valid hostname (e.g., `plex.myawesomeserver.com`).
#### Port
This value should be set to the port that your Plex server listens on. The default port that Plex uses is `32400`, but you may need to set this to `443` or some other value if your Plex server is hosted on a VPS or cloud provider.
The **Play on Plex** buttons on media pages link to items on your Plex server. By default, these links use the [Plex Web App](https://support.plex.tv/articles/200288666-opening-plex-web-app/) hosted from plex.tv, but you can provide the URL to the web app on your Plex server and we'll use that instead!
Note that you will need to enter the full path to the web app (e.g., `https://plex.myawesomeserver.com/web`).
In this section, simply select the libraries you would like Overseerr to scan. Overseerr will periodically check the selected libraries for available content to update the media status that is displayed to users.
Overseerr will perform a full scan of your Plex libraries once every 24 hours (recently added items are fetched more frequently). If this is your first time configuring Plex, a one-time full manual library scan is recommended!
**If you keep separate copies of non-4K and 4K content in your media libraries, you will need to set up multiple Radarr/Sonarr instances and link each of them to Overseerr.**
Overseerr checks these linked servers to determine whether or not media has already been requested or is available, so two servers of each type are required _if you keep separate non-4K and 4K copies of media_.
**Only v3 Radarr/Sonarr servers are supported!** If your Radarr/Sonarr server is still running v2, you will need to upgrade in order to add it to Overseerr.
Enter a friendly name for the Radarr/Sonarr server.
#### Hostname or IP Address
If you have Overseerr installed on the same network as Radarr/Sonarr, you can set this to the local IP address of your Radarr/Sonarr server. Otherwise, this should be set to a valid hostname (e.g., `radarr.myawesomeserver.com`).
#### Port
This value should be set to the port that your Radarr/Sonarr server listens on. By default, Radarr uses port `7878` and Sonarr uses port `8989`, but you may need to set this to `443` or some other value if your Radarr/Sonarr server is hosted on a VPS or cloud provider.
Enter your Radarr/Sonarr API key here. Do _not_ share these key publicly, as they can be used to gain administrator access to your Radarr/Sonarr servers!
You can verify whether or not you have a URL base configured in your Radarr/Sonarr server at **Settings → General → Host**. (Note that a restart of your Radarr/Sonarr server is required if you modify this setting!)
Select the default settings you would like to use for all new requests. Note that all of these options are required, and that requests will fail if any of these are not configured!
If the hostname or IP address you configured above is not accessible outside your network, you can set a different URL here. This "external" URL is used to add clickable links to your Radarr/Sonarr servers on media detail pages.
Enable this setting if you would like to scan your Radarr/Sonarr server for existing media/request status. It is recommended that you enable this setting, so that users cannot submit requests for media which has already been requested or is already available.
Please see [Notifications](../notifications/README.md) for details on configuring and enabling notifications.
## Jobs & Cache
Overseerr performs certain maintenance tasks as regularly-scheduled jobs, but they can also be manually triggered on this page.
Overseerr also caches requests to external API endpoints to optimize performance and avoid making unnecessary API calls. If necessary, the cache for any particular endpoint can be cleared by clicking the "Flush Cache" button.
