How do I install the Osascript Sysinfo skill?

Run npx skillmds@latest add damionrashford/osascript-sysinfo in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Osascript Sysinfo safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Osascript Sysinfo?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Osascript Sysinfo free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Osascript Sysinfo?

damionrashford (@damionrashford) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Osascript Sysinfo by damionrashford

Name: Osascript Sysinfo
Author: damionrashford

Osascript Sysinfo

Read macOS system state. Use when checking battery percentage and charge state, getting OS version and hardware specs, listing startup login items, or reading macOS user defaults (NSUserDefaults / plist app preferences).

damionrashford 55c29c8 5 files · 8.5 KB Updated Sep 17, 2026

File contents

osascript-sysinfo

System state queries via pmset, NSProcessInfo ObjC bridge, System Events, and defaults. All scripts are pure Python — mix of subprocess shell and JXA ObjC bridge.

Scripts

Battery percentage, charging state, and time remaining (MacBook only):

uv run scripts/battery.py

OS version, hostname, CPU count, RAM, username — via NSProcessInfo ObjC bridge:

uv run scripts/system-info.py

List, add, or remove apps that launch at login via System Events:

uv run scripts/login-items.py --list
uv run scripts/login-items.py --add /Applications/Spotify.app
uv run scripts/login-items.py --remove Spotify

Read macOS user defaults by domain and optional key — --export for full domain JSON:

uv run scripts/user-defaults.py com.apple.dock
uv run scripts/user-defaults.py com.apple.finder AppleShowAllFiles
uv run scripts/user-defaults.py NSGlobalDomain --export
uv run scripts/user-defaults.py --list-domains

Key Tools / APIs

Tool	Use case
`pmset -g batt`	Battery percentage, state, time remaining
`NSProcessInfo` (JXA ObjC)	OS version string, hostname, CPU count, RAM
System Events login items	Add/remove startup apps
`defaults` + `plutil` CLI	Read/write NSUserDefaults (Dock, Finder, any app)

Useful `defaults` Domains

com.apple.dock — Dock position, tile size, autohide
com.apple.finder — Finder view, hidden files (AppleShowAllFiles)
NSGlobalDomain — Dark mode (AppleInterfaceStyle), key repeat, scroll direction

Reference

reference/03-jxa-objc-bridge.md — NSProcessInfo, NSUserName, NSHomeDirectory, ObjC.unwrap() rule
reference/05-system-events.md — Login items, current user via System Events

---name: osascript-sysinfodescription: Read macOS system state. Use when checking battery percentage and charge state, getting OS version and hardware specs, listing startup login items, or reading macOS user defaults (NSUserDefaults / plist app preferences).---# osascript-sysinfoSystem state queries via `pmset`, `NSProcessInfo` ObjC bridge, System Events, and `defaults`.All scripts are pure Python — mix of subprocess shell and JXA ObjC bridge.## ScriptsBattery percentage, charging state, and time remaining (MacBook only):```bashuv run scripts/battery.py```OS version, hostname, CPU count, RAM, username — via `NSProcessInfo` ObjC bridge:```bashuv run scripts/system-info.py```List, add, or remove apps that launch at login via System Events:```bashuv run scripts/login-items.py --listuv run scripts/login-items.py --add /Applications/Spotify.appuv run scripts/login-items.py --remove Spotify```Read macOS user defaults by domain and optional key — `--export` for full domain JSON:```bashuv run scripts/user-defaults.py com.apple.dockuv run scripts/user-defaults.py com.apple.finder AppleShowAllFilesuv run scripts/user-defaults.py NSGlobalDomain --exportuv run scripts/user-defaults.py --list-domains```## Key Tools / APIs| Tool | Use case ||------|----------|| `pmset -g batt` | Battery percentage, state, time remaining || `NSProcessInfo` (JXA ObjC) | OS version string, hostname, CPU count, RAM || System Events login items | Add/remove startup apps || `defaults` + `plutil` CLI | Read/write NSUserDefaults (Dock, Finder, any app) |## Useful `defaults` Domains- `com.apple.dock` — Dock position, tile size, autohide- `com.apple.finder` — Finder view, hidden files (`AppleShowAllFiles`)- `NSGlobalDomain` — Dark mode (`AppleInterfaceStyle`), key repeat, scroll direction## Reference- [reference/03-jxa-objc-bridge.md](reference/03-jxa-objc-bridge.md) — NSProcessInfo, NSUserName, NSHomeDirectory, ObjC.unwrap() rule- [reference/05-system-events.md](reference/05-system-events.md) — Login items, current user via System Events

Frequently asked questions