# Agent Teams (experimental — opt-in) > On-demand reference. Demoted out of `coordination-rules.md` (an always-loaded > CLAUDE.md import) in v1.1 — read this when actually considering a team, not > on every turn. Multiple independent Claude Code *sessions* running simultaneously, coordinated via a shared task list. Each session has its own context window and token budget. Requires the `CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS=1` environment variable. ## Use agent teams when - Work spans multiple subsystems that will not touch the same files - Each workstream would take >30 minutes and benefits from true parallelism - A senior agent (technical-director, producer) needs to coordinate 3+ specialist sessions working on different epics simultaneously ## Do not use agent teams when - One session's output is required as input for another (use sequential subagents) - The task fits in a single session's context (use subagents instead) - Cost is a concern — each team member burns tokens independently ## Current status Opt-in via `CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS=1`. Document first usage here when adopted.