What is button-system?

A two-level button system for an iOS design system, with a basic interactive button and a higher-level themed button with preset variants.

Use it to build tappable controls with press effects, gestures, loading indicators, automatic focus, gradients, and predefined button styles.

It gives developers consistent interaction behavior, sizing, styling, loading feedback, and gesture handling.

button-system — Skill for Claude Code by sampaio-tech

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 sampaio-tech/iOS-design-system --skill button-system

Clone the repo

git clone --depth 1 https://github.com/sampaio-tech/iOS-design-system

Made for: Claude Code.

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/sampaio-tech/ios-design-system/button-system/github.svg)](https://agentmods.dev/skills/sampaio-tech/ios-design-system/button-system)

Your own site

<a href="https://agentmods.dev/skills/sampaio-tech/ios-design-system/button-system"><img src="https://agentmods.dev/badge/skills/sampaio-tech/ios-design-system/button-system/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/sampaio-tech/ios-design-system/button-system"><img src="https://agentmods.dev/badge/skills/sampaio-tech/ios-design-system/button-system.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,220 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	$0.00020	$0.01220
Opus 5.5	$0.00008	$0.00488
Sonnet 5.5	$0.00004	$0.00244
Haiku 4.5	$0.00002	$0.00122

Measured 2mo ago against content hash 55fd88869a98, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

button-system 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 2mo 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.

.claude/skills/button-system/SKILL.md · 227 lines

How it starts

The opening of the file, as written. The whole thing — 227 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Button System Architecture

Two-layer system:

CupertinoButtonWidget - Base interactive widget for all tappable elements
ButtonWidget - High-level themed button with automatic sizing and styling

CupertinoButtonWidget (Base Layer)

Low-level widget providing:

Opacity animation on press (default 0.8)
Tap, long press, double tap, drag gestures
Loading state with CupertinoActivityIndicator
Auto focus management

Basic Usage

CupertinoButtonWidget(
  onPressed: () {},
  color: theme.defaultColors.systemBlue,
  borderRadius: BorderRadius.circular(12),
  padding: EdgeInsets.all(16),
  child: Text('Button'),
)

With Loading State

CupertinoButtonWidget(
  onPressed: isLoading ? null : () {},
  displayCupertinoActivityIndicator: isLoading,
  color: theme.defaultColors.systemBlue,
  child: Text('Submit'),
)

With Gradient

CupertinoButtonWidget(
  onPressed: () {},
  backgroundGradient: LinearGradient(
    colors: [
      theme.defaultColors.systemPurple,
      theme.defaultColors.systemPink,
    ],
  ),
  child: Text('Premium'),
)

ButtonWidget (High Layer)

High-level button with automatic theming.

Label Button

ButtonWidget.label(
  size: const LargeButtonSize(),
  color: const BlueButtonColor(),
  label: 'Continue',
  leftIcon: CupertinoIcons.checkmark,
  onPressed: () {},
)

Icon-Only Button

ButtonWidget.icon(
  size: const MediumButtonSize(),
  color: const GreyTransparentButtonColor(),
  leftIcon: CupertinoIcons.add,
  onPressed: () {},
)

Button Sizes

SmallButtonSize

Min height: 28pt
Border radius: 14pt
Typography: subheadline (15pt)
Use for: Secondary actions, compact UIs

MediumButtonSize

Min height: 34pt
Border radius: 50pt (pill)
Typography: body (17pt)
Use for: Standard buttons, toolbars

LargeButtonSize

Min height: 50pt
Border radius: 12pt
Typography: body (17pt)
Use for: Primary CTAs, main actions

CustomButtonSize

Define your own dimensions:

const CustomButtonSize(
  borderRadius: BorderRadius.all(Radius.circular(16)),
  padding: EdgeInsets.symmetric(horizontal: 24, vertical: 18),
  iconSize: 22,
  boxConstraints: BoxConstraints(minHeight: 56, minWidth: 56),
)

Read the full file on GitHub · 227 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.

2mo ago First seen · 227 lines · 20 tokens per session scan A 55fd88869a98

Subscribe to this mod's changes

button-system is a skill published in the GitHub repository sampaio-tech/iOS-design-system (20 stars, last pushed 3mo ago), licensed MIT. It adds 20 tokens to every session and 1,220 once invoked, about $0.0001 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 2026-08-30.

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