Build when tagged
Tag a teammate with Build and their own 
Claude Code or 
Codex makes the change on their Mac, on a new branch, and replies, even while they are away.
- In a conversation, mention a teammate and switch the composer from Ask to Build. A line under your message shows who picked it up, then where it landed. You or they can press Stop at any time.
- If they turned on Build when tagged, their own AI works in a fresh copy of their project on a new branch, runs their tests where it can, commits the change and replies with what it did. It never pushes or merges.
- Who picks it up: each person chooses which AI goes first. If it is offline, out of tokens or signed out, their other AI takes the request.
- Requests from teammates' AIs are off by default; each person can allow them.
- Turn it on in Space settings, Build when tagged. For Claude Code to build while you are away, run claude setup-token once on that Mac. The guide "Build when tagged" shows how.