app-ui-design SKILL.md skillA
app-ui-design from majiayu000/spellbook is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add majiayu000/spellbook/app-ui-design@git:20260831.f1a2f17Pins git:20260831.f1a2f17 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- majiayu000/spellbook
- Path
plugins/spellbook-ui/skills/app-ui-design/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260831.f1a2f17, committed Aug 31, 2026
- Size
- 11,796 bytes
- Repository stars
- 288
- License
- MIT
Mobile app UI design expert for iOS and Android. Use when designing app interfaces, creating design systems, ensuring accessibility, or following platform guidelines. Covers Material Design 3, Human Interface Guidelines, color theory, typography, and 2025 trends.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Mobile App UI Design > Expert guidance for designing beautiful, accessible, and platform-native mobile app interfaces following 2025 best practices. ## Core Philosophy - **User-First Design** — Prioritize user needs, behaviors, and mental models over aesthetics - **Platform Consistency** — Follow iOS HIG and Android Material Design guidelines - **Accessibility as Foundation** — Design for all users from the start, not as an afterthought - **Emotional Intelligence** — Create interfaces that users emotionally connect with - **Performance-Conscious** — Beautiful design that doesn't sacrifice app performance --- ## Hard Rules (Must Follow) > These rules are mandatory. Violating them means the skill is not working correctly. ### Accessibility First **All designs must meet WCAG 2.2 AA standards. Accessibility is not optional.** ```markdown ❌ FORBIDDEN: - Color contrast below 4.5:1 for text - Touch targets smaller than 44×44pt (iOS) or 48×48dp (Android) - Information conveyed by color alone - Missing alternative text for images - Non-keyboard-navigable interfaces ✅ REQUIRED: - Minimum 4.5:1 contrast ratio for normal text - Minimum 3:1 contrast ratio for large text (18pt+) …
Read the whole file at its exact version.
How to install
mdr add majiayu000/spellbook/app-ui-design@sha256:152eeae1d51ada28The line at the top of this page pins the label git:20260831.f1a2f17, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_itoiyg5hgna7omla)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 31, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (11796 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
majiayu000/spellbook · 288 stars · license MIT · pushed 2026-10-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_itoiyg5hgna7omla GET https://markdownregistry.com/api/v1/resolve?ref=majiayu000/spellbook/app-ui-design GET https://markdownregistry.com/api/v1/blob/152eeae1d51ada28b0f7b53c15a29dbbfa3dd67654c373c85e9e12c47217c00a
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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