mobile-ui-ux

mobile-ui-ux is a skill for Claude Code, Codex from makifbaysal/tasktrooper. It costs 64 tokens per session (1,720 once invoked), scanned A, original, Apache-2.0.

A guide to designing mobile screens and components for Flutter, SwiftUI, and Compose. It covers platform conventions, layout, text, colours, dark mode, forms, keyboard handling, and loading, empty, and error states.

In plain words
What is it for?
Use it when designing or building any mobile screen or visible component, including forms, navigation, feedback, responsive layouts, and accessibility-related states.
Why use it?
It prevents apps from looking like desktop websites squeezed onto a phone or handling only the successful case. It also helps keep interactions consistent with iOS and Android expectations.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when designing or building any mobile screen or visible component, including forms, navigation, feedback, responsive layouts, and accessibility-related states.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/makifbaysal/tasktrooper/mobile-ui-ux
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 makifbaysal/tasktrooper --skill mobile-ui-ux
Clone the repo
git clone --depth 1 https://github.com/makifbaysal/tasktrooper

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.

agentmods badge for mobile-ui-ux

README.md
[![agentmods](https://agentmods.dev/badge/skills/makifbaysal/tasktrooper/mobile-ui-ux/github.svg)](https://agentmods.dev/skills/makifbaysal/tasktrooper/mobile-ui-ux)
Your own site
<a href="https://agentmods.dev/skills/makifbaysal/tasktrooper/mobile-ui-ux"><img src="https://agentmods.dev/badge/skills/makifbaysal/tasktrooper/mobile-ui-ux/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.

agentmods 80×15 button for mobile-ui-ux

Your own site · 80×15
<a href="https://agentmods.dev/skills/makifbaysal/tasktrooper/mobile-ui-ux"><img src="https://agentmods.dev/badge/skills/makifbaysal/tasktrooper/mobile-ui-ux.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,720 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00064 $0.01720
Opus 5.5 $0.00026 $0.00688
Sonnet 5.5 $0.00013 $0.00344
Haiku 4.5 $0.00006 $0.00172

Measured 8d ago against content hash eb711384918c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mobile-ui-ux 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 8d 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.

catalog/agents/mobile-developer/skills/mobile-ui-ux/SKILL.md · 148 lines

How it starts

The opening of the file, as written. The whole thing — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Mobile UI/UX

Overview

A screen that compiles and passes its widget test has not been designed. The two most common mobile failures are a web-style layout wearing a mobile skin (centred everything, modal-on-modal, a custom tab bar that doesn't match the platform) and a happy-path-only build with no loading/empty/error state.

Core principle: follow the platform's own conventions first, build from theme tokens and the atomic component library, and design every state — not just the one the task's screenshot shows.

Platform conventions

Concern iOS Android
Touch target 44×44pt 48×48dp
Top-level navigation tab bar, 3–5 items nav bar, 3–5 items → nav rail ≥600dp
Back edge swipe, never overridden system/predictive back; BackHandler/PopScope, never onBackPressed
Text Dynamic Type text styles Material type roles, in sp
Alerts critical only critical only
Non-critical feedback — snackbar

Destructive actions carry a destructive role plus a confirmation or an undo window — never a silent delete either platform.

Hierarchy

  • One primary action per screen, placed in the thumb zone (bottom half on a phone held one-handed).
  • Emphasise with size → weight → colour, in that order; de-emphasise secondary content rather than shouting the primary one louder.

Spacing

  • A 4/8 token scale (xs 4, sm 8, md 16, lg 24, xl 32 or the repo's own theme extension) — never a magic numeric literal in a widget/view.
  • Tighter spacing inside a group than between groups.

Typography

  • Theme text styles only (Theme.textTheme, Material type roles, Font semantic styles) — never a fixed/hardcoded size.
  • Body text ≥16px (Flutter/Android) / ≥17pt (iOS); nothing below 11pt/12sp anywhere in the UI.
  • Never a fixed height on a container that holds text — a fixed height clips text at larger font scales.

Colour

  • Roles, not hex: ColorScheme/Theme.of(context).colorScheme, Material colour roles, asset-catalog semantic colours — never Color(0x…)/Colors.* outside the theme files.
  • Contrast ≥4.5:1 body, ≥3:1 large text; status is never colour-only (pair with an icon or text).
  • Dark mode comes from the theme, never a per-widget override. Material 3 dark surfaces are never pure black — use the theme's elevated-surface colour.

Read the full file on GitHub · 148 lines

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.

  1. 8d ago First seen · 148 lines · 64 tokens per session scan A eb711384918c

Subscribe to this mod's changes

mobile-ui-ux is a skill published in the GitHub repository makifbaysal/tasktrooper (113 stars, last pushed yesterday), licensed Apache-2.0. It adds 64 tokens to every session and 1,720 once invoked, about $0.0003 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 2026-10-05.

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