Here is a confession that might sound odd in a guide about setting up Claude Code: the goal is not to marry Claude Code. The goal is to build a setup so portable that if something better ships next month — OpenAI's Codex, Cursor, Windsurf, whatever wins the week — you could pack up everything you have built and move in an afternoon. Your instructions, your custom tools, your reusable workflows: all of it should come with you.
That sounds like a strange thing to optimize for. Most "best setup" posts try to lock you deeper into one tool. But the AI coding world is moving too fast for that bet to be safe, and — happily — a small set of open standards now make portability the default instead of a fantasy. If you are a working engineer, this is how you stop re-plumbing your environment every time you switch editors. And if you are a vibe coder — someone who builds mostly by describing what you want in plain English and steering the AI, a style Andrej Karpathy named in early 2025 — this is how you get a professional-grade setup without months of fiddling.
The short version: keep your AI's instructions, tools, and skills in plain, open formats you own — not buried in one vendor's settings. Three standards make this work: MCP for tools, AGENTS.md for instructions, and Agent Skills for reusable know-how. Learn those, and the question "which coding agent should I use?" stops being scary.
