Claude Code CLI and Antigravity CLI: Where Should a Rule Live?
Part of this site's code is written by AI agents, and they do it from two separate command-line tools — Claude Code CLI and Antigravity CLI — with the same repository, the same rules and the same tools. I describe what it looks like to build the product that runs the agent, and the model behind it, as replaceable parts: skills, tools, two mirrored permission layers and where a rule actually lives.