Show HN: Turn your keyboard's Caps Lock LED into a status light for Claude Code

Category: devtools

Tags: rust, keyboard-led, ai-agents, status-indicator, cli

Score: 6.8/10 (Innovation: 7, Technical: 7, Documentation: 8, Utility: 5)

capslkagent is a Rust CLI that turns your keyboard's Caps Lock LED (or Mac backlight) into a status indicator for AI coding agents like Claude Code, Codex, and opencode. It wires into agent hooks/plugins to show solid/blinking/off states, cleverly using the Caps Lock LED via IOKit, sysfs, or keybd_event APIs. The project is technically solid and well-documented, but its utility is niche and caps lock LEDs are an increasingly rare hardware feature.

Target audience: developers using AI coding agents who want ambient status notifications

Repository: https://github.com/jagenaujagenau/capslkagent · Rust · MIT · 7 stars

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