A study analyzed the tool choices of Claude Code, a coding agent, by pointing it at real repositories and observing its decisions. The results showed that Claude Code tends to build custom solutions rather than recommending tools, and when it does pick a tool, it often chooses established ones. The study also found that newer models tend to pick newer tools, and that deployment is fully stack-determined, with Vercel being the top choice for JavaScript and Railway for Python. The study's findings have implications for devtool companies and the future of coding.