Start here — before you ship another line of agent-written code.
Agents have changed what a single engineer can build. They have also changed what a single engineer can break. This page is a top-to-bottom read — about 20 minutes — so you can decide how to work with agents without losing the judgment that makes you worth hiring.
Agentic engineering is the practice of building software with an autonomous or semi-autonomous coding partner in the loop — one that can read your code, write code, run tools, and iterate on its own output. The engineer's job shifts from typing code to framing problems, setting constraints, reviewing proposals, and deciding which of several valid answers is the right one for this team at this moment.
It is not “AI autocomplete.” It is closer to working with a fast, relentless junior engineer who has read every framework's docs and none of your team's history. Velocity goes up. Judgment becomes the scarce resource.
Agents compound in environments where you control the full stack, iterate in small steps, and can afford to review every change. In other words: startups, product engineering teams, and most application work. They are less useful — and more dangerous — in regulated domains where every change needs a long paper trail, or in codebases where no one can read the change log fast enough to catch a regression.
If you're a seed-to-Series-A startup, a small product team, or a solo founder — agents are already table stakes. If your context is heavier, adopt the parts of this site that survive your constraints.
The best choice is the one you'll actually run every day. My default recommendation is Claude Code — fast, terminal-native, and plays well with skills and plugins. Cursor and Copilot are reasonable second options if you prefer an IDE-first workflow. Every skill on this site is written to work with any of them; the engagement layer is where the differences live.
- Terminal-first: Claude Code — the default on this site. Installs skills as plugins, fits into CI, scripts cleanly.
- IDE-first: Cursor — if your team already lives in VS Code and wants an inline chat model.
- Completion-only: Copilot — the minimum. Useful for typing leverage, not for agentic workflows.
Install your tool, clone your repository, and run through the Define phase of the lifecycle before writing a single agent prompt. The fastest way to waste a week is to let an agent start coding before you've named the bet.
When you're ready, jump into the lifecycle: