Your First Agent

Open a project

If nothing is open yet, you'll see the workspace picker: pick a folder from your recents or browse for one. Opening a project starts a new chat for it.

Send your first prompt

Type into the composer at the bottom and hit Enter. That's it — behind the scenes Quack spawns the CLI bridge for whichever backend you're using (Claude Code or Codex) and streams its output into the chat.

New chats default to Milo, the built-in Builder agent (Agent permissions, reasoning-tier model). You can switch to a different preset — Nora (Debugger), Vera (Reviewer), Lia (Companion, chat-only) — or your own custom agent from the composer's agent pill before you send.

Read the response

Tool calls (file edits, searches, commands) show up as compact, expandable entries in the chat — you don't have to scroll through raw logs to see what the agent actually did.

What's next

Once you're comfortable with one agent, the real value shows up when you open a second project and start a second agent — see Multiple Projects.