We don't have any information about any specific bot for Slack, in this case, you'll need to check with its creator. My bet is that it uses Jira's REST API to create/work on issues from Slack, the bot probably has some commands in order to do that(check for a "help" option).
If you are looking for integration between Jira and Slack, I recommend you to check this page:
It contains information on how to set up Jira to send notifications to users directly on Slack.
I have multiple projects that use variations of the same base workflow. The variations depend on the requirements of the project or issue type. The variations mostly come in the form of new statuses ...
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