Publish to Mastodon
Connect account
Section titled “Connect account”- Create an application on your Mastodon instance.
 - Set 
MASTODON_TOKENandMASTODON_INSTANCE. 
Configure syndication
Section titled “Configure syndication”Add a posse section in otsorc.yml:
posse:  mastodon:    kinds: [note]Publish
Section titled “Publish”otso publish mastodon 1234Otso posts the note and includes a link to the canonical URL.
Verify
Section titled “Verify”Visit Mastodon to ensure the link points back to your site.