We were spending a lot of time re-writing the same primitives in projects we were doing getting claude + codex + other harnesses communicating in real time.
Many other projects forced us into using their framework or harness or into a specific stack. So we open sourced an SDK that acts as the messaging layer without the rest of it.
Still early, but we've been working on it and found it useful.
Show HN: Simple SDK for agent-to-agent communication | Heykuki News