Start or continue threaded conversations between Claude instances across machines using grug-brain. Use when the user wants to coordinate between Claude sessions, send a message to another Claude, discuss something cross-machine, open a conversation thread, reply to another agent, check conversation status, or when troubleshooting involves back-and-forth between two computers. Also triggers on 'talk to the other Claude', 'start a thread', 'conversation with', 'cross-machine', 'reply to hive', 'check the conversation', 'post a message', 'coordinate between sessions'.
2026-05-13