Apple Hig
Apple Human Interface Guidelines reference, updated for iPhone Duo and OS 27.
Install
npx skills add justinwetch/HIGAgentSkills --skill apple-hig -g -a claude-code -y- Repository
- justinwetch/HIGAgentSkills704
- Category
- Design
- Updated
- 18d ago
- License
- MIT
- Context cost
- Mediumabout 2,213 tokens
- Runs scripts
- No, instructions only
What it does
Apple Human Interface Guidelines reference, updated for iPhone Duo and OS 27. Provides authoritative platform-specific design rules, component specifications, exact measurements, and interaction patterns for iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. Use when designing, reviewing, auditing, or fixing any Apple platform UI, or when asked about specific HIG components, sizing, system behaviors, frameworks (HealthKit, SiriKit, ARKit, etc.), or platform conventions. Also use when the user is designing any digital interface and could benefit from established design principles, even without an explicit Apple platform context. Includes a guided /duo workflow that adapts an existing iOS app to iPhone Duo, plus opt-in enforce mode with independent review.
Apple HIG Skill
Use the distilled HIG references in references/hig/ through routing-index.md. The source snapshot and verified release measurements are in README.md.
Loading Protocol
Release 2026-09-27; Apple source snapshot 2026-09-12.
For help, installation, version or capability questions, read only this entry
point and the relevant README section. Do not load the HIG corpus for setup help.
Installing or upgrading this skill includes its /duo slash command. After the
skill folder is in place, check whether the host already offers /duo. If it
does not, copy commands/duo.md into the host's custom slash-command or custom
prompt directory (user-level unless the user asks for one project), confirm
/duo is available, and tell the user if a restart is needed.
Work directly in the conversation and the user's project; do not create a browser
intake form, onboarding site, dashboard, or browser setup step.
Ordinary guidance is the default. Only an explicit request to apply enforce mode
activates its procedure. Read references/enforce.md first in that case and check
reviewer, Python and observation capabilities before loading the design guidance.
A leading /duo, Use apple-hig in Duo mode, or an explicit request to adapt
an existing app for iPhone Duo starts Duo mode: read references/duo.md and
follow its stages. Questions about the command and ordinary Duo design questions
stay ordinary guidance. Duo mode works only in the app's native code; it never
produces HTML, SVG, or web mockups.
Use the available Python 3.10+ interpreter (python3 or python); do not assume
the executable name. Ordinary guidance also works without Python.
