# Brightnessctl

> Use this skill when the user wants to adjust screen brightness from the command line on Linux systems.

- Skill: `javimosch/brightnessctl` (Agent Skill)
- Install (CLI): `npx skillmds@latest add javimosch/brightnessctl`
- Raw SKILL.md: https://api.skillmd.com/api/skills/javimosch/brightnessctl/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: javimosch (https://skillmd.com/u/javimosch)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/javimosch/brightnessctl

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# brightnessctl Plugin

brightnessctl controls display backlight brightness.

## Usage Examples

- "get current brightness level"
- "set brightness to 50 percent"
- "increase brightness by 10 percent"
- "save current brightness for restore"

## Installation

```bash
brew install brightnessctl
```

## Key Features
- Display brightness read and set
- Percentage-based and absolute control
- Step-based adjustments (inc/dec)
- Min/max brightness querying
- Multiple device support (internal/external)