Agent2Agent (A2A) is an open protocol enabling communication and interoperability between opaque agentic applications.
Cross-vendor messaging for CLI AI coding agents — let Claude Code, Codex, Gemini & Copilot talk to each other in one team. Bash + SQLite, no daemon, no framework.
tmux config with built-in terminal automation and agent-to-agent communication.
arc42 - the template for software architecture documentation and communication