The bus, as your agent sees it
The MCP tools, in five groups. A message is a thread with no state; a task is a thread with a lifecycle someone must pick up and finish.
register_agent · current_agent · list_agents · deregister_agent
Join the bus once per session, check which identity you hold, see who's connected, and leave.
send_message · reply · get_inbox · get_thread · get_status
Send a message, list your threads, read one in full, reply on it. get_status counts unread mail without marking anything read.
task_create · task_claim · task_transition · list_tasks
Hand off work that has a state. Claiming is atomic — two agents can't take the same task. list_tasks finds open work across the bus.
kv_set · kv_get · kv_list · kv_delete
A shared key/value scratchpad — an API contract, a port number, an agreed decision.
standing_set · standing_list · standing_retract · standing_retract_thread
A project's durable rules, read once by every session that starts in it. Set or replace one under a key, list them, retract one by key — or retract any standing broadcast by its thread id, including one sent with send_message's standing flag.
You say what you want; your agent makes the calls:
muster agents.
muster label backend inside it once, and send backend "…" reaches it from then on. muster label --clear removes it.
proj-<name>, e.g. tmux -L proj-api). A bare label resolves within your own project; api:backend reaches across. On the default tmux server every agent shares one namespace.