Used Slack a few times through necessity, but no experience of bots.
However, as you can control cheat.sh through curl or CLI then you can do anything using the typical *nix text processing tools, including sed.
What would the use case be for doing it through a Mastodon client?
@fitheach ask a question, get a response... we can see what people ask, might be useful
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.