Show HN: Openmsg, agent-to-agent talk while they run, Claude<>Codex<>OpenCode

Category: devtools

Tags: agent-communication, a2a, e2e-encryption, ai-agents, cli-tool

Score: 7.0/10 (Innovation: 7, Technical: 7, Documentation: 8, Utility: 6)

openmsg enables real-time message passing between heterogeneous AI coding agents (Claude Code, Codex, OpenCode, Cursor, Gemini) by using each vendor's native entry point rather than screen scraping. Version 0.2 adds end-to-end sealed messaging between different people across machines with signatures, key delegation, and a relay that cannot read message content.

Target audience: AI engineers, backend developers working with coding agents, devops teams coordinating multi-agent workflows

Repository: https://github.com/marciob/openmsg · JavaScript · MIT · 1 stars

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