pass-keybase
pass-keybase is a pass extension to create an encrypted backup of all your existing gpg encypted passwords. Under the hood keybase is used to encrypt the backup.
The version control functionality (via git) of pass will also be supported by this extension. In other words, keybase encrypted passwords will be commited to your git repo.
Encrypt one or all password
Decrypt a password
There are several more commands, e.g. reporting to figure out if your GPG and Keybase keychain is in sync.