I stopped trying to find the one perfect AI coding agent. For about six months I bounced between tools — one was great at planning, another wrote cleaner diffs, a third caught bugs the first two confidently shipped. Switching between them meant copy-pasting context all day, and I was the only thing holding the workflow together. So I flipped it around. Instead of picking one agent, I now run three at once , each doing the job it's actually good at. This is the setup that finally stuck. The three roles I don't think of them as "tools" anymore. I think of them as a small team with three roles: The Planner — reads the issue, explores the codebase, and writes a step-by-step plan. No code yet. Its only job is to be right about what to do. The Implementer — takes the plan and writes the actual diff. It's fast and literal, which is exactly what you want once the thinking is done. The Reviewer — never sees the plan.…