A guide for building macOS apps that use the top-center camera notch or a Dynamic Island-style panel. It covers the panel window, display positioning, expandable states, widgets, and screens without a notch.

Use it to implement notch utilities with agent monitors, media controls, heads-up displays, shelves, or camera-related widgets.

It helps the interface align with Mac hardware and behave predictably as it opens, closes, changes screens, or moves between displays.

macos-notch — Skill for Claude Code by robzilla1738

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add robzilla1738/roberts-skills --skill macos-notch

Clone the repo

git clone --depth 1 https://github.com/robzilla1738/roberts-skills

Made for: Claude Code.

Or install macos-notch, the plugin that ships this one along with the rest of its 1 skill, 1 command.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/robzilla1738/roberts-skills/macos-notch/github.svg)](https://agentmods.dev/skills/robzilla1738/roberts-skills/macos-notch)

Your own site

<a href="https://agentmods.dev/skills/robzilla1738/roberts-skills/macos-notch"><img src="https://agentmods.dev/badge/skills/robzilla1738/roberts-skills/macos-notch/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/robzilla1738/roberts-skills/macos-notch"><img src="https://agentmods.dev/badge/skills/robzilla1738/roberts-skills/macos-notch.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,424 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00054	$0.01424
Opus 5	$0.00027	$0.00712
Sonnet 5	$0.00011	$0.00285
Haiku 4.5	$0.00005	$0.00142

Measured 9d ago against content hash ad834864fb22, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

macos-notch scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/macos-notch/skills/macos-notch/SKILL.md · 99 lines

How it starts

The opening of the file, as written. The whole thing — 99 lines — stays where its author put it; the contents beside it link to each section on GitHub.

macOS Notch

Hub skill for designing and implementing notch-style macOS apps: a top-center, hardware-aligned black shell that expands into useful modules — Dynamic Island behavior on MacBook displays.

Read this file first, then open only the spoke files relevant to the task.

Mission

Create a notch utility that feels like display hardware with context, not a floating widget. The closed state should merge with the camera housing (or a centered pill on non-notch displays). The open state grows downward from a pinned top edge with calm spring motion.

Non-negotiables

Use a transparent nonactivating NSPanel for the shell — not a titled document window. See foundations.md.
Separate AppKit positioning from SwiftUI content — geometry and screen changes stay out of views.
State machine over boolean soup — closed, peek, open, expanded, dragging. See foundations.md and module-peek-transient.md.
Black closed shell — no translucent glass on the hardware edge. See visual-system.md.
Menu bar fallback — notch may be unavailable on external displays. See integration-shipping.md.
GPL caution — TheBoredTeam/boring.notch is GPL-3.0. Study patterns via ecosystem-landscape.md; do not copy source into proprietary apps without compliance.
Not physical-notch masking — hiding the hardware notch (znotch-style) is a different product category. See ecosystem-landscape.md.

When to use this skill

Building or reviewing a Dynamic Island / notch utility for macOS
Adding a module (media, HUD, shelf, agents, camera) to an existing notch app
Auditing alignment, hover timing, or focus-stealing behavior

When not to use

Standard document-based macOS apps — see the macos-design skill (its layout-and-windowing.md spoke)
Hiding the physical notch without a panel app — see ecosystem-landscape.md
Linux/GNOME notch clones — out of scope

Read the full file on GitHub · 99 lines

Files

What ships with it

13 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

9d ago First seen · 99 lines · 54 tokens per session scan A ad834864fb22

Subscribe to this mod's changes

macos-notch is a skill published in the GitHub repository robzilla1738/roberts-skills (5 stars, last pushed 3mo ago), licensed MIT. It adds 54 tokens to every session and 1,424 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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