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Open-Agent-Tools/Postcard

Asynchronous 1-to-1 postcard messaging between local AI agent sessions via a Git-backed ledger. Ships as a Python CLI and a Claude Code plugin.

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oat-postcard

01

Open-Agent-Tools/Postcard

Skill Claude CodeCodex

Use when the user wants to message, notify, or coordinate with another AI agent session running on this machine — or asks who else is active. Wraps the oat-postcard CLI (send, reply, inbox, directory, log, whoami) and the postcard-reader subagent for mail triage.

2 22d ago A 66 tokens original MIT