Claude Code is an agentic coding tool that lives in your terminal, understands your codebase, and helps you code faster by executing routine tasks, explaining complex code, and handling git workflows - all through natural language commands.
从零写一个能活下来的 AI Agent：15 课可跑代码，机制从真实产品 Reina 移植 | Build a coding agent from scratch — how Claude Code / Codex / Cursor actually work under the hood. 15 runnable lessons, zero deps.