How can you programmatically accept repository invitations?

[cc]

I see there is an invitation endpoint but I don't see any way to programmatically accept an invitation to collaborate on a repository. In the past, Bitbucket would just automatically let you see a repository if someone invited you to collaborate on it. But now, you must accept the collaboration invitation first before you can view the repository and perform any action. Is there  a way to programmatically find the invitation and accept it rather than waiting for the email and going to the provided link?