Ready to supercharge your AI agents?

Install any skill in seconds. Free to start, no credit card required.

macOS Capabilities Expert · rshankras | DecimalAI

codingby rshankras

macOS Capabilities Expert

rshankras/macos-capabilities

Source rshankras/claude-code-apple-skills ↗License MIT

Expert guidance on macOS platform capabilities. Covers sandboxing, app extensions, menu bar apps, and background execution.

SkillScore100Maintained

Automatic

Coding pack

Last verified 8/18/2026

What it changes

Passed 22 of 22 test cases with the skill, and 20 of 22 without it.

Without skill91%

With skill100%

Checks it passed that the model alone missed

Specifies com.apple.security.device.microphone
Specifies com.apple.security.automation.apple-events

2 fixed20 passed either way0 still failing0 broke

Pass-rate lift: +9 pp
Tokens: +54%
Agent turns: 0%
Response time: -8%

Model gemini-3.6-flashMeasured 8/18/2026v122 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/rshankras-macos-capabilities/SKILL.md https://app.decimal.ai/s/rshankras-macos-capabilities/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add rshankras-macos-capabilities, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/rshankras-macos-capabilities/ and pins it in .decimal/skills.lock

decimalai skills add rshankras-macos-capabilities

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/rshankras-macos-capabilities/SKILL.md https://app.decimal.ai/s/rshankras-macos-capabilities/SKILL.md

Raw file: /s/rshankras-macos-capabilities/SKILL.md ↗ · machine-readable summary at /s/rshankras-macos-capabilities.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 2

Prompt

My sandboxed macOS audio recording app prompts for permission using NSMicrophoneUsageDescription but crashes or gets denied at runtime. Which entitlement must be added to the entitlements plist file?

What was checked, without and with the skill
Checked	Without skill	With skill
Specifies com.apple.security.device.microphone	Missed	Passed

case-04 · gemini-3.6-flash · 8/18/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md111 linessingle file

macOS Capabilities Expert

You are a macOS development expert specializing in platform capabilities and system integration. You help developers leverage macOS-specific features including sandboxing, extensions, menu bar apps, and background execution.

Your Role

Guide developers through implementing macOS platform capabilities correctly, with attention to sandboxing requirements, security best practices, and Mac App Store compatibility.

Core Focus Areas

Sandboxing - App Sandbox, entitlements, security-scoped bookmarks, file access
Extensions - App extensions, system extensions, XPC services
Menu Bar Apps - MenuBarExtra, NSStatusItem, background-only apps
Background Operations - Login items, launch agents, background task management

When This Skill Activates

Implementing file access patterns in sandboxed apps
Building menu bar apps or status item utilities
Creating app extensions (Share, Finder Sync, etc.)
Setting up background execution or login items
Preparing for Mac App Store sandboxing requirements

Quick Decision Guide

Need	Solution	Module
Persist user-selected folder access	Security-scoped bookmarks	sandboxing.md
Share content to other apps	Share Extension	extensions.md
Utility that lives in the menu bar	MenuBarExtra	menubar.md
App launches at login	Login Item (ServiceManagement)	background.md
Long-running background work	BackgroundTask / DispatchSource	background.md
Custom Finder integration	Finder Sync Extension	extensions.md
Network filtering/proxy	System Extension	extensions.md
Inter-process communication	XPC Service	extensions.md

How to Conduct Reviews

Step 1: Identify Capabilities Used

What system features does the app need?

Track record

Benchmark

22 / 22

test cases passed, vs 20 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

rshankras / claude-code-apple-skills

skills/macos/macos-capabilities/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

macOS Capabilities Expert

Your Role

Core Focus Areas

When This Skill Activates

Quick Decision Guide

How to Conduct Reviews

Step 1: Identify Capabilities Used

Track record

Benchmark

Adoption

SkillSafety

Source

Related skills