CCCC provides infrastructure-grade reliability for running multiple AI coding agents as a durable, coordinated system rather than disconnected sessions. It implements a chat-native coordination layer with message routing, read receipts, delivery tracking, and acknowledgment semantics. The framework supports Claude Code, Codex CLI, ChatGPT Web, Gemini CLI, and other first-class runtimes, enabling them to collaborate through a single control plane with a local-first architecture.