Waterline: macOS Screen Saver for AI Coding Agent Activity

About

Waterline is a free macOS screen saver that shows Claude Code, Codex and Cursor activity as water. The water rises as agents work, and failures and context compactions send ripples across the surface, so you can check from across the room whether agents are still running. Local collectors pass activity to the saver over a local socket, and it makes no network connections.