Adding PullRequest to a Bitbucket repository takes only a couple of minutes. You'll need to add PullRequest Bot to each repository as a read-only user and default reviewer.
From your Bitbucket profile page, click the repository you'd like to add PullRequest to.
NOTE: If you need PullRequest to access multiple repositories, the following steps will need to be repeated for each.
In the repository side menu, click Settings.
Under the GENERAL options, click User and group access.
In the Users section, type "PullRequest Bot" and select the Bitbucket account.
Once selected, be sure the PullRequest Bot user has Read access.
Under Settings > WORKFLOW, click Default reviewers.
Under Users type "PullRequest Bot", select the account, and click the Add button.
That's it! Email email@example.com if you have any questions.