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Inter-agent communication for tmux sessions. Send and receive messages between AI agents.
Passed 17 of 20 test cases with the skill, and 8 of 20 without it.
and 9 more in the full report
10 fixed9 passed either way3 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.
I'm going to be focusing on a complex refactoring task for a while. Please update my status in the agent mail system so notifications get suppressed, then pull the next unread message from my inbox.
| Checked | Without skill | With skill |
|---|---|---|
| Uses agentmail status work to suppress notifications while busy | Missed | Passed |
| Uses agentmail receive to pull the next unread message | Missed | Passed |
The instructions your model reads when the skill loads.
AgentMail enables communication between AI agents running in different tmux windows through a simple file-based mail system.
AgentMail is a CLI tool for inter-agent communication within tmux sessions. Messages are stored in .agentmail/mailboxes/ as JSONL files, providing persistent, file-locked message queues for each agent.
.agentmail/ directoryagentmail send <recipient> "<message>"
Send a message to another agent. The recipient must be a valid tmux window name.
Examples:
agentmail send agent2 "Can you review the changes in src/api?"
agentmail send -r worker -m "Task completed"
echo "Build succeeded" | agentmail send agent2
agentmail receive
Read the oldest unread message from your mailbox. Messages are delivered in FIFO order and marked as read after display.
test cases passed, vs 8 / 20 without
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