Yeah it is.

Exxp for the hive integration and Mastodon Autopost for Mastodon.

Exxp is a fantastic plugin. There's some limitations that are more to do with hive.blog - the new editor in recent WP updates lets you create some complex layouts which hive.blog just can't cope with. But basic, simple stuff formatted in horizontal blocks (which is probably easier to read anyway) seems to work just fine.

The Mastodon plugin just posts a ~400 word excerpt of the blog post to your feed and then links back to the post in WP. Does what it says on the tin really, but there's a few others I'll have a play with.

There is a plugin that turns your blog into an ActivityPub node in the fediverse - which is very funky, but not quite what I need right now...