Agent skill

Flutter Improving Accessibility

by btwld in btwld/superdeck

Configures a Flutter app to support assistive technologies like Screen Readers.

BSD-3-ClauseAuto-check passedFrontend & Design

Install Flutter Improving Accessibility

skills CLI
$ npx skills add btwld/superdeck --skill flutter-improving-accessibility -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install btwld/superdeck flutter-improving-accessibility --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/btwld/superdeck.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/flutter-improving-accessibility .claude/skills/flutter-improving-accessibility && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
flutter-improving-accessibility
GitHub stars
130
Token cost
~1.4k tokens
SKILL.md length
573 words
Files
1
Skills in repo
23
Repo updated
First seen
Licence
BSD-3-Clause

At a glance

Configures a Flutter app to support assistive technologies like Screen Readers.

  • Works in 3 steps: Run validator: Execute accessibility… → Review errors: Identify unannounced… → Fix: Apply Semantics, adjust…
  • Ensuring an application is usable for people with disabilities
  • SKILL.md covers Contents, UI Design and Styling, Accessibility Widgets and Web Accessibility, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Flutter Improving Accessibility is an agent skill from btwld/superdeck. Configures a Flutter app to support assistive technologies like Screen Readers. Use when ensuring an application is usable for people with disabilities.

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Frontend & Design, covering Accessibility and Cross-platform mobile apps. It works with Flutter. The repository describes itself as: Presentation slides for Flutter with Flutter. The licence is BSD-3-Clause.

When your agent uses it

  • Ensuring an application is usable for people with disabilities
  • Tasks that involve Accessibility
  • Tasks that involve Cross-platform mobile apps

Example prompts

  • “Use the flutter-improving-accessibility skill to configure a Flutter app to support assistive technologies like Screen Readers”
  • “/flutter-improving-accessibility”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Run validator: Execute accessibility tests or use OS-level screen readers (VoiceOver/TalkBack) to navigate the view.
  2. Review errors: Identify unannounced interactive elements, trapped focus, or clipped text.
  3. Fix: Apply Semantics, adjust constraints, or modify colors. Repeat until the screen reader provides a clear, logical traversal of the UI.

What it can do on your machine

Read from SKILL.md and the folder at commit 815a746. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are dart).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Flutter Improving Accessibility loads about 1.4k tokens when it runs. Until then it costs about 46 tokens; SKILL.md has 573 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~46
When it runs · the whole SKILL.md, loaded when a task matches
~1.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from btwld/superdeck at commit 815a746, republished under its BSD-3-Clause licence (© btwld). 573 words, ~1,413 tokens.

Download SKILL.mdSave it as .claude/skills/flutter-improving-accessibility/SKILL.md (or your agent's skills folder).
name
flutter-improving-accessibility
description
Configures a Flutter app to support assistive technologies like Screen Readers. Use when ensuring an application is usable for people with disabilities.
metadata.model
models/gemini-3.1-pro-preview
metadata.last_modified
Thu, 12 Mar 2026 22:17:37 GMT

Implementing Flutter Accessibility

Contents

UI Design and Styling

Design layouts to accommodate dynamic scaling and high visibility. Flutter automatically calculates font sizes based on OS-level accessibility settings.

  • Font Scaling: Ensure layouts provide sufficient room to render all contents when font sizes are increased to their maximum OS settings. Avoid hardcoding fixed heights on text containers.
  • Color Contrast: Maintain a contrast ratio of at least 4.5:1 for small text and 3.0:1 for large text (18pt+ regular or 14pt+ bold) to meet W3C standards.
  • Tap Targets: Enforce a minimum tap target size of 48x48 logical pixels to accommodate users with limited dexterity.

Accessibility Widgets

Utilize Flutter's catalog of accessibility widgets to manipulate the semantics tree exposed to assistive technologies (like TalkBack or VoiceOver).

  • Semantics: Use this to annotate the widget tree with a description of the meaning of the widgets. Assign specific roles using the SemanticsRole enum (e.g., button, link, heading) when building custom components.
  • MergeSemantics: Wrap composite widgets to merge the semantics of all descendants into a single selectable node for screen readers.
  • ExcludeSemantics: Use this to drop the semantics of all descendants, hiding redundant or purely decorative sub-widgets from accessibility tools.

Web Accessibility

Flutter web renders UI on a single canvas, requiring a specialized DOM layer to expose structure to browsers.

  • Enable Semantics: Web accessibility is disabled by default for performance. Users can enable it via an invisible button (aria-label="Enable accessibility").
  • Programmatic Enablement: If building a web-first application requiring default accessibility, force the semantics tree generation at startup.
  • Semantic Roles: Rely on standard widgets (TabBar, MenuAnchor, Table) for automatic ARIA role mapping. For custom components, explicitly assign SemanticsRole values to ensure screen readers interpret the elements correctly.

Adaptive and Responsive Design

Differentiate between adaptive and responsive paradigms to build universal applications.

  • Responsive Design: Adjust the placement, sizing, and reflowing of design elements to fit the available screen space.
  • Adaptive Design: Select appropriate layouts (e.g., bottom navigation vs. side panel) and input mechanisms (e.g., touch vs. mouse/keyboard) to make the UI usable within the current device context. Design to the strengths of each form factor.
Show full SKILL.md (215 more words)Show less

Workflows

Task Progress: Accessibility Implementation

Copy this checklist to track accessibility compliance during UI development:

  • Verify all interactive elements have a minimum tap target of 48x48 pixels.
  • Test layout with maximum OS font size settings to ensure no text clipping or overflow occurs.
  • Validate color contrast ratios (4.5:1 for normal text, 3.0:1 for large text).
  • Wrap custom interactive widgets in Semantics and assign the appropriate SemanticsRole.
  • Group complex composite widgets using MergeSemantics to prevent screen reader fatigue.
  • Hide decorative elements from screen readers using ExcludeSemantics.
  • If targeting web, verify ARIA roles are correctly mapped and consider programmatic enablement of the semantics tree.
Feedback Loop: Accessibility Validation

Run this loop when finalizing a view or component:

  1. Run validator: Execute accessibility tests or use OS-level screen readers (VoiceOver/TalkBack) to navigate the view.
  2. Review errors: Identify unannounced interactive elements, trapped focus, or clipped text.
  3. Fix: Apply Semantics, adjust constraints, or modify colors. Repeat until the screen reader provides a clear, logical traversal of the UI.

Examples

Programmatic Web Accessibility Enablement

If targeting web and requiring accessibility by default, initialize the semantics binding before running the app.

dart
import 'package:flutter/material.dart';
import 'package:flutter/semantics.dart';
import 'package:flutter/foundation.dart';

void main() {
  if (kIsWeb) {
    SemanticsBinding.instance.ensureSemantics();
  }
  runApp(const MyApp());
}
Custom Component Semantics

If building a custom widget that acts as a list item, explicitly define its semantic role so assistive technologies and web ARIA mappings interpret it correctly.

dart
import 'package:flutter/material.dart';
import 'package:flutter/semantics.dart';

class CustomListItem extends StatelessWidget {
  final String text;

  const CustomListItem({super.key, required this.text});

  @override
  Widget build(BuildContext context) {
    return Semantics(
      role: SemanticsRole.listItem,
      label: text,
      child: Padding(
        padding: const EdgeInsets.all(12.0), // Ensures > 48px tap target if interactive
        child: Text(
          text,
          style: const TextStyle(fontSize: 16), // Ensure contrast ratio > 4.5:1
        ),
      ),
    );
  }
}

© btwld, BSD-3-Clause. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/flutter-improving-accessibility of btwld/superdeck.

Open the folder on GitHubat commit 815a746

Compare with similar skills

Flutter Improving Accessibility next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Flutter Improving Accessibility compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Flutter Improving Accessibility this skillbtwld/superdeck130—~1.4kAutomated safety check: PassBSD-3-Clause
UI UX Pro MaxOhh-889/skyroc79527 repos~3.6kAutomated safety check: NotesMIT
AccessibilityVeryGoodOpenSource/vgv-ai-flutter-plugin169—~4.2kAutomated safety check: PassMIT
Agentic A11yOvid/paad131—~9.1kAutomated safety check: PassMIT
Material 3hamen/material-3-skill1.5k2 repos~7.8kAutomated safety check: PassMIT
AccessibilityGetStream/stream-chat-react-native1.2k—~6.5kAutomated safety check: PassCustom licence

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Works with

Questions about Flutter Improving Accessibility

What does Flutter Improving Accessibility do?

Configures a Flutter app to support assistive technologies like Screen Readers. Flutter Improving Accessibility is an agent skill from btwld/superdeck. Configures a Flutter app to support assistive technologies like Screen Readers.

When should I use Flutter Improving Accessibility?

Flutter Improving Accessibility fits situations like: ensuring an application is usable for people with disabilities; tasks that involve Accessibility; tasks that involve Cross-platform mobile apps.

How do I install Flutter Improving Accessibility in Claude Code?

Run `npx skills add btwld/superdeck --skill flutter-improving-accessibility -a claude-code`. Or copy the skill folder (.agents/skills/flutter-improving-accessibility in btwld/superdeck) into .claude/skills/flutter-improving-accessibility in your project. Claude Code loads it when a task matches its description.

How do I install Flutter Improving Accessibility in Codex?

Run `npx skills add btwld/superdeck --skill flutter-improving-accessibility -a codex`. Or copy the skill folder (.agents/skills/flutter-improving-accessibility in btwld/superdeck) into .agents/skills/flutter-improving-accessibility in your project. Codex loads it when a task matches its description.

Can I use Flutter Improving Accessibility in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add btwld/superdeck --skill flutter-improving-accessibility -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/flutter-improving-accessibility, .gemini/skills/flutter-improving-accessibility, .github/skills/flutter-improving-accessibility and .opencode/skills/flutter-improving-accessibility in your project.

What does Flutter Improving Accessibility need to run?

SKILL.md names no scripts, command-line tools or credentials: Flutter Improving Accessibility is instructions for the agent only.

Does Flutter Improving Accessibility access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Flutter Improving Accessibility safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Flutter Improving Accessibility use?

Flutter Improving Accessibility is published under the BSD-3-Clause licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Flutter Improving Accessibility use?

About 1.4k tokens (SKILL.md is roughly 5.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Flutter Improving Accessibility?

Skills that share tags, products or a category with Flutter Improving Accessibility: UI UX Pro Max (Ohh-889/skyroc, 795 stars), Accessibility (VeryGoodOpenSource/vgv-ai-flutter-plugin, 169 stars), Agentic A11y (Ovid/paad, 131 stars) and Material 3 (hamen/material-3-skill, 1.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Flutter Improving Accessibility?

btwld (a GitHub organization) maintains it in btwld/superdeck, which has 130 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on September 28, 2026.

Source: btwld/superdeck on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.