Mac CLI lets AI agents draw arrows on screen
Original: Show HN: Let your AI agents paint big arrows, boxes and text on your screen
Why This Matters
Gives AI coding agents a simple visual feedback channel on macOS desktops.
franzenzenhofer released big-arrow-on-the-screen, a macOS CLI tool (MIT) that lets AI agents like Claude Code and Codex paint arrows, boxes, and text over any window. Click-through, self-removing. 446 GitHub stars.
big-arrow-on-the-screen (CLI: bigarrow) is a Swift-based macOS tool that lets AI agents render large visual overlays—arrows, boxes, labeled text—on top of any window without disrupting keyboard focus or blocking clicks. The overlay draws itself, does its job, then disappears automatically.
The tool is positioned as a "skill" for Claude Code and Codex, meaning agents can call it programmatically to point at UI elements, annotate screen regions, or guide users through steps during automated workflows. The repo ships with a ready-made skill definition file alongside the CLI.
Built with Swift, MIT licensed, it currently sits at 446 stars and 6 forks after appearing on Hacker News. The project targets accessibility and AI agent tooling use cases. No system permissions beyond screen drawing are implied by the readme.