Chat commands

Every ! (bang) command you can type in a UFO channel — stop, restart, toggle plan mode, run goal loops, update the host and more.

Bang commands are typed as an ordinary message in any channel — no prefix menu, no settings screen. Send !queue and the agent answers the command instead of chatting. Typing / instead of ! opens autocomplete for skills and slash commands as you type.

Session control

Command	What it does
`!stop`	Cancel the current task and clear the queue.
`!new`	Start a fresh session — drops the current context. Aliases: `!clear`, `!reset`.
`!queue`	Show messages waiting in this channel's queue.
`!compact`	Compact the session's context window (trims oldest messages if compaction fails).
`!help`	List the commands available in the channel.

Modes

Command	What it does
`!human`	Toggle human-only mode — UFO stops responding in the channel until you toggle it back.
`!plan`	Toggle plan mode: the agent plans first and executes only after you approve. `!plan <request>` plans a single request.
`!ultracode`	Toggle ultracode — xhigh effort with standing multi-agent workflows (Claude SDK; uses more tokens).

Automation

Command	What it does
`!goal <objective>`	Start a goal loop — the agent keeps working, turn after turn, until an evaluator model agrees the goal is met.
`!connect`	Get a subscription sign-in link for a ChatGPT or Grok account, delivered in the channel. See Models.
`!todo`	Quick-add a todo to the workspace. See Tasks & todos.

Host & engine

These act on the host machine — see Machines to confirm it's online.

Command	What it does
`!update`	Update the host gracefully — waits for running tasks to finish.
`!update-force`	Update the host immediately, without waiting for tasks.
`!restart`	Restart the sessions on the host — safe, and fixes most one-off hangs. See Troubleshooting.
`!oc`	Toggle the OpenCode engine for non-Claude models. See Models.
`!slash <cmd>`	Run a Claude Code slash command on the host.
`!run <cmd>`	Run a shell command on the host and return the output.