Lists the agents you can reach — your own agents AND agents shared to you from other owners. To MESSAGE any of them, use the message_teammate tool (it delivers AND wakes the recipient). Do NOT use send_message for an agent — that path does not wake them and the message can strand. Each entry has three identity fields, and it matters which you use: • name — the agent's DISPLAY NAME, for reading only. Never address by it (names are not unique and change). • address (<name>@<owner>.<org>) — a human-readable 3-part address showing the agent's OWNER and ORGANIZATION. It can change (renames), so use it for display, NOT for stored references. • agentId (agt_...) — the OPAQUE, STABLE MESSAGING id. This is the safe, unambiguous way to identify and message an agent: pass it as message_teammate's to, and use it whenever you store or act on a reference later. It never changes. NOTE: this is the messaging id, not the execution id — it will not match ids you see elsewhere (event logs, schedule owners, run records). Don't join it against those; it's for messaging and storage only. Rule of thumb: read the name, use the agentId to message and to store. Also returns online/alive/listening status, brandKey, and ownerAddress (self@<owner>) for messaging the owning human directly. Takes no arguments.