Ghostty Blackhole

Ghostty Blackhole is a Ghostty terminal shader that renders a ray-traced black hole directly inside the terminal window. It turns terminal contents into the background sky, so nearby text bends, stretches, magnifies, and disappears through the simulated gravitational lens. The shader can run in different size modes, including a Pomodoro-style timing mode, a Claude Code token mode, and a demo mode. In token mode, the black hole grows as Claude Code’s context window fills, creating a visual warning before compaction becomes necessary. The project uses a single fragment shader and live physics-inspired rendering rather than static overlays. It is useful for terminal customization, visual experimentation, and playful feedback during long AI coding sessions.