kendreaditya/claude/skills/xdr-brightness
claude/skills/xdr-brightness/SKILL.md
--- name: xdr-brightness description: Boost MacBook Pro M1/M2/M3 display brightness beyond the system maximum (~500 nits SDR cap) into HDR/XDR range (~1000 nits). Uses a compiled single-file Swift CLI. Trigger when the user asks to: boost screen brightness, make the display brighter, enable XDR/HDR brightness, turn on extra brightness for outdoor use, auto-adjust brightness based on ambient light, or control the xdr-brightness tool. --- # xdr-brightness Single-file Swift CLI that unlocks the M
tools
Updated Apr 17, 2026
$ install --global
skillsauthnpx skillsauth add kendreaditya/.config claude/skills/xdr-brightnessInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Apr 17, 2026, 10:44 AM6.1s2 files scanned
SKILL.md
- name:
- xdr-brightness
- description:
- Boost MacBook Pro M1/M2/M3 display brightness beyond the system maximum (~500 nits SDR cap) into HDR/XDR range (~1000 nits). Uses a compiled single-file Swift CLI. Trigger when the user asks to: boost screen brightness, make the display brighter, enable XDR/HDR brightness, turn on extra brightness for outdoor use, auto-adjust brightness based on ambient light, or control the xdr-brightness tool.
xdr-brightness
Single-file Swift CLI that unlocks the MacBook Pro's HDR brightness headroom via two mechanisms:
- An invisible 1×1 Metal window with
wantsExtendedDynamicRangeContent = true— triggers EDR mode on the panel (~1000 nit budget vs ~500 nit SDR) - Gamma table scaling (
CGSetDisplayTransferByTable) multiplied by a factor up to 1.59×
Ambient light is read directly from AppleSPUHIDDriver.CurrentLux in IORegistry — no entitlements needed.
Binary
Pre-built binary at scripts/xdr-brightness. Swift source at scripts/xdr-brightness.swift.
Commands
xdr-brightness on [0-100] # boost on at given % (default 100). blocks until killed.
xdr-brightness on 80 --bg # same, detached to background
xdr-brightness off # kill background instance, restore brightness
xdr-brightness status # print ambient lux + whether boost is active
xdr-brightness auto --bg # auto-enable when lux > 5000, disable when < 2000
Workflow
Turn on:
~/.claude/skills/xdr-brightness/scripts/xdr-brightness on 100 --bg
Check:
~/.claude/skills/xdr-brightness/scripts/xdr-brightness status
Turn off:
~/.claude/skills/xdr-brightness/scripts/xdr-brightness off
Auto mode — polls ALS every 5s, enables above 5000 lux, disables below 2000 lux:
~/.claude/skills/xdr-brightness/scripts/xdr-brightness auto --bg
Recompile if needed
cd ~/.claude/skills/xdr-brightness/scripts
swiftc -framework Cocoa -framework IOKit -framework MetalKit xdr-brightness.swift -o xdr-brightness
Notes
- Apple Silicon MacBook Pro only (M1/M2/M3 XDR display)
- Process must stay alive to hold EDR mode — PID written to
/tmp/xdr-brightness.pid - Boost is lost on reboot; re-run to re-enable
- Max factor: 1.59× (1.535× on MacBookPro18,3/18,4 600-nit panels)
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