Note: Application Links using OAuth 2 are available since Bitbucket Data Center / Server v7.21. If you are using an older Bitbucket Data Center / Server version then consult the Bitbucket Data Center / Server OAuth 1 setup guide.
From the organization settings page, select the "Integrations" subtab. Hit the "Add Integration" button on the integrations listing page to get to the form below. To set up a Bitbucket Data Center / Server integration with Private Packagist, start by selecting "Bitbucket Data Center / Server" as the platform, enter the URL of your on-premise Bitbucket Data Center / Server into the base URL field and select OAuth 2 as the OAuth version as seen in the example below.
Copy the content from the "Callback URL / Redirect URL" field and follow the link to set up an Application Link.
Click on the link to setup an Application Link on Bitbucket Data Center / Server and select "External application" as type and "Incoming" as direction.
After you click the button to continue, enter a name and the content from the "Callback URL / Redirect URL" from the Private Packagist form. Select Repositories "Read" as application permission and save the form.
Once the form is saved, Bitbucket Data Center / Server will show you the Client ID and secret. Copy them over to Private Packagist and save the integration.
In case the U2F & TOTP plugin by Alpha Server is installed on the Bitbucket Data Center / Server then you will need to enable the OAuth whitelist otherwise Private Packagist won't be able to authenticate with the Bitbucket Data Center / Server.