After installing the keybase command-line tool onto a new / fresh computer, you may want to import your PGP key to the local keyring so that you may use the keys with GPG.
Import your PUBLIC PGP key:
keybase pgp export|gpg --import -For your SECRET PGP key, you have to be more assertive:
keybase pgp export -s|gpg --allow-secret-key-import --import -You will then want to trust the keys as your own, so that GPG can be "sure" they're safe to use
gpg --edit-key you@keybase.io
trust
5
y
save
List Keys to Find KEY_ID
Export to keyserver
Or upload to keys.openpgp.org
gpg --export KEY_ID | curl -T - https://keys.openpgp.orgUpdate GitHub GPG keys