How I Built a Multi-Agent System Using Only Claude Code (No Frameworks)

I run 7 Claude Code agents that coordinate across 16 projects on a single machine. No CrewAI. No AutoGen. No LangGraph. Just files, shell scripts, and Claude Code's built-in hook system. This isn't a toy demo — it manages a crypto trading bot, marketing pipelines, a multiplayer game server, and home automation. Here's the architecture and how to build it yourself. Why Not Use a Framework? Multi-agent frameworks operate at the API level — they orchestrate LLM calls through Python cod...