A guide to building Flutter applications, which are apps made with Dart that can run across mobile and other platforms. It recommends a particular structure for separating business logic, data access, and screens, along with navigation and state-management tools.

Use it to structure a Flutter app, define its data and business layers, manage screen state and navigation, connect to platform features, and prepare releases for the App Store or Google Play.

It helps keep Flutter projects organized as they grow and makes platform-specific code easier to isolate. It also provides patterns for choosing Flutter and handling features that require native device access.

flutter — Skill for Claude Code and Codex by EliasOulkadi

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 EliasOulkadi/shokunin --skill flutter

Clone the repo

git clone --depth 1 https://github.com/EliasOulkadi/shokunin

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/eliasoulkadi/shokunin/flutter/github.svg)](https://agentmods.dev/skills/eliasoulkadi/shokunin/flutter)

Your own site

<a href="https://agentmods.dev/skills/eliasoulkadi/shokunin/flutter"><img src="https://agentmods.dev/badge/skills/eliasoulkadi/shokunin/flutter/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/eliasoulkadi/shokunin/flutter"><img src="https://agentmods.dev/badge/skills/eliasoulkadi/shokunin/flutter.svg" alt="Reviewed on agentmods" width="80" 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 3,004 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	$0.00050	$0.03004
Opus 5	$0.00025	$0.01502
Sonnet 5	$0.00010	$0.00601
Haiku 4.5	$0.00005	$0.00300

Measured 9d ago against content hash b0c391c55fd3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

flutter 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 9d 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.

.pack/skills/flutter/SKILL.md · 279 lines

How it starts

The opening of the file, as written. The whole thing — 279 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Flutter Architect

Widgets are functions of state. Keep them pure. Compose, don't inherit.

Production Flutter apps with Clean Architecture, Riverpod, GoRouter, Impeller, and platform channels. Based on Flutter docs, Riverpod patterns, and production experience.

Decision Framework

Before writing Flutter code, answer:

Is native performance critical? (animations, camera, maps) → Flutter is a strong fit
Is the team already experienced with Dart? → Proceed. If React/TypeScript, consider react-native skill
Is the app content-heavy with standard platform UI? → Consider native or react-native
Does the app need platform-specific features not available in packages? → Verify pub.dev coverage first

Workflow

Scaffold: dart run flutter_skeleton or create lib/core, lib/features/*/domain|data|presentation by hand. Add Riverpod + GoRouter + Freezed deps in pubspec.yaml.
Domain first: Define entities, repository contracts, and use cases. Zero Flutter imports. Pure Dart with freezed for sealed unions.
Data layer: Implement repositories with Dio/retrofit, DTOs with json_serializable, and data sources. Wire up in Riverpod with Provider<AuthRepository>.
Presentation: Build screens and widgets with ConsumerWidget/ConsumerStatefulWidget. Wire NotifierProvider for each feature. Keep ref.watch at leaf level.
Routing: Configure GoRouter with auth redirect (redirect guard), nested routes per feature, and deep link patterns.
Ship: Run tests → flutter build appbundle / flutter build ipa → deploy via Codemagic or GitHub Actions. Enable Impeller on Android in build.gradle.

Sub-Commands

Command	Description
`scaffold`	Create project with folder structure and dependencies
`feature`	Design a feature with domain/data/presentation layers
`state`	Set up Riverpod providers for a feature
`route`	Configure GoRouter with auth guard and deep links
`test`	Write unit + widget + integration tests
`ship`	Build and deploy to App Store + Play Store

Read the full file on GitHub · 279 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.

9d ago First seen · 279 lines · 50 tokens per session scan A b0c391c55fd3

Subscribe to this mod's changes

flutter is a skill published in the GitHub repository EliasOulkadi/shokunin (113 stars, last pushed 1mo ago), licensed MIT. It adds 50 tokens to every session and 3,004 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 2026-08-30.

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