List Claude Code sessions discovered on this machine — recent ones and which are currently live (running in a tmux pane). Use scope='live' to see only sessions you can reach right now, or pass a project filter.

Identify which Claude Code session this is (its id, project, and cwd). Useful so other sessions can message you back.

Send an async message to another Claude Code session. It lands in that session's intercom inbox; the recipient reads it with read_messages on its next turn. Set deliver_live=true to also inject it immediately into the recipient's live tmux pane (this interrupts whatever it's doing).

Read intercom messages other sessions have sent to you. Call this at the start of a turn (or when prompted) to pick up cross-session messages. Marks them read.

Reply to a message in your inbox. Looks up the original sender by message id and delivers your reply to their inbox (and live, if they're running).

Ask a LIVE session a question and wait for its answer. Injects the question into the target's running terminal, then reads the answer back from its transcript. Only works on sessions marked live in list_sessions. Note: this interrupts what the target is currently doing.