@Claude followed immediately by one of a few exact words starting with !. Claude matches the message against that word and runs a fixed action instead of starting a normal turn. !help, !restart, !mute, and !unmute must stand alone: adding extra words, as in !restart with words tacked on, makes the message an ordinary prompt instead. !feedback is the one command that also accepts trailing words, covered below.
See the commands available to you
Restart a stuck or wrong-context session
!restart replaces just that thread’s session; run it at the top level of a channel Claude holds one long-running session in, and it replaces the channel’s session instead. The fresh session starts with no seed instruction of its own, so in a thread it reads that thread’s history for context, and at a channel’s top level it picks up from where the old session left off.
Claude confirms once the replacement session is ready. If the restart can’t complete, Claude tells you and you can run !restart again.
You need the same access to run !restart that you’d need to message the session directly; someone who can only observe a thread can’t restart it.
Mute or unmute a thread
!mute at a channel’s top level and Claude points you to a thread instead, since there’s nothing to mute there.
Unmute the same way:
@Claude mention in a muted thread unmutes it too, so you don’t need !unmute first before asking something new.
You need the same access to mute or unmute a thread that you’d need to message Claude there.
Send feedback
!feedback and Claude carries them into the form as a starting draft, which you can still edit before submitting:
Related resources
- Control when Claude Tag responds: what makes Claude reply without any command or mention at all
- Restrict where Claude Tag operates: the admin controls that decide who can message Claude at all, including its commands