App homepage
Most of the apps developed for Outreach have to be installed by organization admin in order to be accessible for end-users. One notable exception to this rule are apps that use only Outreach REST API through OAuth and do not utilize any other extensions.
These apps do not require installation and can be accessed by the users provided that they grant your app permission through the OAuth flow.
In this case your app will have a dedicated page from which the OAuth flow starts. To make this page accessible for your end-users through the app detail page in Outreach marketplace add the App homepage feature and specify the homepage URL.If your Outreach app is intended to be started from a URL outside Outreach you can specify the app homepage URL