ShapeBlock currently integrates with 2 external services for fetching private source code.
Any number of Github and Gitlab accounts can be integrated for a user. This can be done at the integrations page. This is done on a one-time basis and can be used across projects to fetch private git repositories.
NOTE ShapeBlock uses Github and Gitlab access tokens solely to access private repositories and deploy them on your infrastructure. See the section in security for more details on how your privacy is handled in this case.
Integration of other services like BitBucket and Slack is planned and part of the roadmap.