courier

The Atlassian and Slack MCP tools are the default reach for Jira and Slack. courier installs two bins, jira and slack, to close the gaps those MCPs leave. File bytes and take-backs are the gaps they close today: pulling a ticket's or thread's attachments onto disk, pushing files back up as a Jira attachment or onto a Slack message the MCP can only post text to, and taking a Slack post back off the channel. Whenever a new gap shows up it belongs here too, so treat these bins as a growing toolkit rather than a fixed pair of tricks.

A growing set of commands is never a remembered one, so discover it every run:

jira --help and slack --help for the commands that exist right now.
<bin> <command> --help for that command's arguments and flags.