What is common-mobile-ux-core?

Guidelines for designing touch-first mobile screens, including button sizes, screen cutouts, keyboards, text, and pressed states. Safe areas are the parts of a screen that avoid notches and system controls.

Use it when building or reviewing mobile screens, touch interactions, forms, keyboard behavior, and support for iOS or Android screen insets.

They help prevent controls that are hard to tap, content hidden by device edges, and desktop interactions that do not work on phones.

common-mobile-ux-core — Skill by HoangNguyen0403/agent-skills-standard

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 HoangNguyen0403/agent-skills-standard --skill common-mobile-ux-core

Clone the repo

git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard

Made for: Claude Code, Codex.

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/hoangnguyen0403/agent-skills-standard/common-mobile-ux-core/github.svg)](https://agentmods.dev/skills/hoangnguyen0403/agent-skills-standard/common-mobile-ux-core)

Your own site

<a href="https://agentmods.dev/skills/hoangnguyen0403/agent-skills-standard/common-mobile-ux-core"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/common-mobile-ux-core/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/hoangnguyen0403/agent-skills-standard/common-mobile-ux-core"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/common-mobile-ux-core.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 483 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. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

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	$0.00045	$0.00483
Opus 5.5	$0.00018	$0.00193
Sonnet 5.5	$0.00009	$0.00097
Haiku 4.5	$0.00005	$0.00048

Measured 1mo ago against content hash 94b2f5a41757, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

common-mobile-ux-core 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 1mo 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.

.agents/skills/common/common-mobile-ux-core/SKILL.md · 56 lines

What it actually says

Mobile UX Core

Priority: P0 (CRITICAL)

Guidelines

Touch Targets: Min 44x44pt (iOS) / 48x48dp (Android). Add padding if needed.
Safe Areas: Wrap content in SafeArea/WindowInsets. Avoid notches.
Interactions: Use active states (no hover). Haptic feedback (short).
Typography: Min 16sp body. Line height 1.5x.
Keyboards: Auto-scroll inputs. Set InputType (email/number) & Action.

Code Examples

Correct: IconButton(icon: Icon(Icons.close), padding: EdgeInsets.all(12))
Avoid: Icon(Icons.close, size: 16) (Touch target too small)

Review Workflow

Test the smallest interactive element against 44pt iOS / 48dp Android.
Test content, keyboard, and fixed actions with notch/home-indicator/window insets.
Check pressed, loading, error, and disabled states; do not port desktop hover behavior.
Verify platform conventions separately before calling the screen complete.

Anti-Patterns

No Hover Effects: Mobile no cursor; use pressed/active states instead
No Tiny Targets: All clickable elements must ≥44pt
No Fixed Bottoms: Always account for Home Indicator and Keyboard safe areas
No OS Mixing: Respect Material (Android) and Cupertino (iOS) conventions separately

mobile-accessibility | mobile-performance | flutter-design-system | react-native-dls

Files

What ships with it

1 file 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.

LICENSE 1.0 KB

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.

1mo ago First seen · 56 lines · 45 tokens per session scan A 94b2f5a41757

Subscribe to this mod's changes

common-mobile-ux-core is a skill published in the GitHub repository HoangNguyen0403/agent-skills-standard (582 stars, last pushed today), licensed MIT. It adds 45 tokens to every session and 483 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-03.

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