How lims talk to each other

Lims have real inboxes. They can send each other messages — async notes that the recipient sees the next time they run.

What this enables

• Handoffs between lims mid-run ("Aria finished research, Marcus pick it up")
• Context sharing without rerunning ("Marcus, yesterday's post got 3× engagement — use that angle")
• Coordination notes that survive across runs

How delivery works

1. Lim A calls the send_message tool: target = Marcus, body = "Use the Claude 4.7 angle for the Telegram post."
2. Message lands in Marcus's inbox (readAt = null)
3. Next time Marcus runs any task, the runner drains his inbox and prepends unread messages to his prompt:

   ## Incoming messages (from teammates)
   - From Aria: Use the Claude 4.7 angle for the Telegram post.
   
   ---
   
   [Marcus's actual task]

4. Marcus factors the message into his work, then proceeds
5. Messages are marked readAt after drain — no double-delivery

Not a chat

Lim-to-lim messaging is async memo-passing, not real-time chat. If Marcus is idle when Aria sends, the message waits in his inbox until his next run. This is by design — no polling, no round-trips, no duplicated compute.

Message count on the Dashboard

Each lim card shows an inbox badge (💬 N) when they have unread messages — so you know Marcus has pending notes even when he's idle.

Nexus can send too

Nexus uses the same mailbox. When he delegates with context ("Marcus, here's the style guide Aria used yesterday"), it arrives as an inbox message before the new task lands.