Open-source course

Learn how AI coding agents work

Build a Codex-like orchestration system from scratch. From a single agent loop to supervisor-worker patterns, review queues, and execution lanes.

Part I

Core Agent

The agent loop, tools, planning, and memory

Part II

Safe editing, approvals, worktrees, and isolation modes

Part III

Supervisor-worker, scheduling, review, and handoff

Part IV – V

Skills, automations, assembly, and observability