--- title: "CHOI SEULKI (@seulki-i) | Hashnode" description: "Backend dev in Korea · Running Claude, Codex & Grok as a team in enterprise SI projects" url: "https://hashnode.com/@seulki-i" --- @seulki-i # CHOI SEULKI @seulki-i · Seoul, South Korea · Joined November 2026 ### [Running Claude, Codex & Grok as One Team on a Locked-Down Enterprise Project (Day 0)](https://seulki-i.hashnode.dev/running-claude-codex-grok-as-one-team-on-a-locked-down-enterprise-project-day-0?utm_source=hashnode&utm_medium=feed) A 2-week experiment on a locked-down client project: can a small, measured AGENTS.md cut token cost and agent mistakes? Baseline: 98% cache reads. 5 min read · [seulki-i.hashnode.dev](https://seulki-i.hashnode.dev/running-claude-codex-grok-as-one-team-on-a-locked-down-enterprise-project-day-0?utm_source=hashnode&utm_medium=feed) [2](https://hashnode.com/posts/running-claude-codex-grok-as-one-team-on-a-locked-down-enterprise-project-day-0/6af3c09ce3dfbf696f9944dc) [23h ago](https://hashnode.com/posts/running-claude-codex-grok-as-one-team-on-a-locked-down-enterprise-project-day-0/6af3c09ce3dfbf696f9944dc)