Set Up POSSE to Mastodon
Connect account
Section titled “Connect account”Run:
otso login mastodon https://mastodon.socialFollow the OAuth flow and store the token.
Choose kinds
Section titled “Choose kinds”Edit otsorc.yml:
posse:  mastodon:    kinds: [note, photo]Test a post
Section titled “Test a post”Publish a note and confirm the Mastodon copy links back to your site.