flutter-architecture

flutter-architecture is a skill for Claude Code, Codex from smicolon/ai-kit. It costs 50 tokens per session (936 once invoked), scanned A, original, MIT.

Guidance for structuring Flutter applications, including feature-based folders, clean architecture, and choices for managing app state. Flutter is a framework for building apps from one codebase for multiple platforms.

In plain words
What is it for?
Use it when organizing a Flutter project, selecting Bloc, Riverpod, or Provider, adding dependency injection, or planning the app architecture.
Why use it?
It helps you choose a maintainable project structure and decide how application state and dependencies should be handled.

Skill for Claude CodeCodex

Part of the flutter plugin — 9 skills shipped together

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.

agentmods
npx agentmods add skills/smicolon/ai-kit/flutter-architecture
Any agent
npx skills add smicolon/ai-kit --skill flutter-architecture
Clone the repo
git clone --depth 1 https://github.com/smicolon/ai-kit

Made for: Claude Code, Codex.

Or install flutter, the plugin that ships this one along with the rest of its 9 skills.

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 flutter-architecture

README.md
[![agentmods](https://agentmods.dev/badge/skills/smicolon/ai-kit/flutter-architecture.svg)](https://agentmods.dev/skills/smicolon/ai-kit/flutter-architecture)
Your own site
<a href="https://agentmods.dev/skills/smicolon/ai-kit/flutter-architecture"><img src="https://agentmods.dev/badge/skills/smicolon/ai-kit/flutter-architecture.svg" alt="Measured on agentmods" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 936 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00050 $0.00936
Opus 5 $0.00025 $0.00468
Sonnet 5 $0.00010 $0.00187
Haiku 4.5 $0.00005 $0.00094

Measured 5d ago against content hash ed6791aa4202, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

flutter-architecture 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 5d 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.

packs/flutter/skills/flutter-architecture/SKILL.md · 128 lines

How it starts

The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Flutter Architecture Patterns

Apply these patterns when designing or implementing Flutter applications.

Feature-First Project Structure

Organize Flutter projects by feature, not by layer:

lib/
├── core/                          # Shared infrastructure
│   ├── constants/                 # App-wide constants
│   ├── errors/                    # Error classes and handling
│   ├── extensions/                # Dart extensions
│   ├── network/                   # HTTP client, interceptors
│   ├── theme/                     # App theme, colors, typography
│   └── utils/                     # Utility functions
├── features/                      # Feature modules
│   ├── auth/
│   │   ├── data/                  # Data layer
│   │   │   ├── datasources/       # Remote and local data sources
│   │   │   ├── models/            # Data models (JSON serializable)
│   │   │   └── repositories/      # Repository implementations
│   │   ├── domain/                # Domain layer
│   │   │   ├── entities/          # Business entities
│   │   │   ├── repositories/      # Repository interfaces
│   │   │   └── usecases/          # Business logic
│   │   └── presentation/          # UI layer
│   │       ├── bloc/              # State management
│   │       ├── pages/             # Screen widgets
│   │       └── widgets/           # Feature-specific widgets
│   └── [other_features]/
├── shared/                        # Shared UI components
│   ├── widgets/                   # Reusable widgets
│   └── services/                  # Shared services
└── main.dart

Clean Architecture Layers

Dependency Rule

  • Presentation → Domain ← Data
  • Domain has NO external dependencies
  • Data implements Domain interfaces

Layer Responsibilities

Presentation: UI components, state management, user interaction handling Domain: Business entities, use cases, repository contracts Data: API calls, local storage, data transformation

State Management Selection

Use Bloc When:

  • Building enterprise applications
  • Need explicit state transitions
  • Complex business logic with multiple states
  • Team prefers reactive programming patterns

Read the full file on GitHub · 128 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. 5d ago First seen · 128 lines · 50 tokens per session scan A ed6791aa4202

Subscribe to this mod's changes

flutter-architecture is a skill published in the GitHub repository smicolon/ai-kit (6 stars, last pushed yesterday), licensed MIT. It adds 50 tokens to every session and 936 once invoked, about $0.0003 per session on Opus 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 2026-08-31.

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